open-source Tag

Browse 264 tools tagged with open-source (tag). Filter by pricing, platform, language and more. The list below shows every tool matching this tag. Each entry links to a full page with pricing, platforms, integrations, and API availability.

All 264 tools

• 🛡️ Hugging Face Models

  Platform to run open-source LLMs to audit how different models categorize specific domains

  open-sourceAPI
• ⚙️ LangChain

  Framework for developing LLM applications with integrated source citation tracking

  open-sourceAPI
• ⛓️ LangChain-SEO-Check

  Open source integration for monitoring RAG retrieval frequency of specific domains

  open-sourceAPI
• 💻 yt-dlp

  Open-source command-line tool for downloading videos and extracting metadata for analysis

  open-source
• 🚉 Hugo

  Fastest open-source static site generator for massive SEO-ready architectures

  open-source
• 🛠️ Hoppscotch

  Open-source API development ecosystem used by SEOs to test and debug headless CMS endpoints and schema APIs

  open-source
• 🏗️ Strapi SEO Plugin

  Open-source plugin for Strapi CMS to manage meta tags sitemaps and social sharing previews

  open-sourceAPI
• 🏠 Kuma

  Self-hosted uptime monitoring tool like Uptime Robot but with a clean UI

  open-sourceAPI
• 🕵️ Sherlock

  Powerful CLI tool to find usernames across over 400 social networks for footprinting

  open-source
• 🛠️ Hugging Face SEO Tools

  Community-driven machine learning models for title generation and content classification

  open-sourceAPI
• 🐘 Mastodon

  Decentralized social profiles that provide high crawlable search signals

  open-sourceAPI
• ✍️ Ghost

  Open-source publishing platform focused on speed and native SEO features

  open-sourceAPI
• 📦 Meilisearch

  Lightning fast open-source search engine API to improve site-search SEO and UX

  open-sourceAPI
• 🚀 Astro

  The web framework for content-driven websites with built-in SEO optimizations and API routes

  open-sourceAPI
• 🏗️ LlamaIndex

  Framework for connecting private data to LLMs for custom GEO applications

  open-sourceAPI
• 🧩 Metabase

  Open-source BI tool that makes SEO data exploration easy for teams

  open-sourceAPI
• 🏗️ Directus SEO

  Open-data platform that turns any SQL database into a headless CMS with SEO meta management

  open-sourceAPI
• ⚡ K6

  Open-source load testing tool for monitoring site performance under stress

  open-sourceAPI
• 🌊 React Flow

  Open-source library for building node-based editors and behavior visualizers

  open-sourceAPI
• 🏗️ PostHog Replay

  Self-hostable session recording for developers who want full data control

  open-sourceAPI
• 📉 Umami

  Self-hosted privacy-focused open-source analytics with a simple interface

  open-sourceAPI
• 📦 WebArchiver

  Open-source tool to create local archives of websites for change comparison

  open-sourceAPI
• 📈 PostHog

  Open-source product analytics suite that provides heatmaps and session recording for SEO conversion analysis

  open-sourceAPI
• 🏗️ DSPy

  Framework for programmatically optimizing language model prompts and weights for reliable content outputs

  open-sourceAPI
• 🖥️ GoAccess

  Real-time web log analyzer and interactive viewer for terminal or browser

  open-source
• 📊 Plausible Analytics

  Privacy-focused, open-source alternative to Google Analytics with lightweight script

  open-sourceAPI
• ⚙️ Web-Check

  All-in-one open-source OSINT and technical SEO tool for analyzing infrastructure and headers

  open-sourceAPI
• 🔔 Changedetection.io

  Self-hosted open-source website change detection and notification service

  open-sourceAPI
• 📜 SingleFile

  Chrome extension that saves an entire page into a single HTML file for archiving

  open-source
• 🧮 Airbyte

  Open-source data integration engine for syncing SEO data to warehouses

  open-sourceAPI
• 🔍 SearXNG

  Privacy-respecting metasearch engine and alternative to Google

  open-sourceAPI
• 🧠 Hugging Face Open LLM Leaderboard

  Compare and analyze models used in AEO to understand which LLMs prioritize specific data sources

  open-sourceAPI
• ⚡ Quicklink

  Open source library that speeds up subsequent page loads by prefetching in-viewport links during idle time

  open-source
• 🌐 Amass

  In-depth DNS enumeration and network mapping for asset discovery

  open-source
• ✍️ LanguageTool API

  Open-source proofreading service for more than 30 languages with an accessible developer API

  open-sourceAPI
• 🛸 OpenReplay

  Open-source session replay suite with privacy focus and self-hosting options

  open-sourceAPI
• 🕵️ OpenSearch

  Community-driven open-source search and analytics suite for log data

  open-sourceAPI
• 🔍 Subfinder

  Fast passive subdomain enumeration tool for domain discovery

  open-sourceAPI
• 🤖 Storm

  Open-source knowledge curation engine that generates SEO-friendly wiki pages

  open-sourceAPI
• 🛠️ GrowthBook

  Open-source feature flagging and A/B testing platform that works with your existing data warehouse

  open-sourceAPI
• 🏗️ Statamic (Free Core)

  Flat-first CMS that is inherently SEO-friendly and fast for smaller projects

  open-sourceAPI
• 🌉 RudderStack

  Customer data platform (CDP) for routing SEO event data to BI warehouses

  open-sourceAPI
• 🌐 Hush

  A simple no-nonsense blocker for those annoying cookie consent notices

  open-source
• 🏗️ Meltano

  Open-source DataOps platform for building SEO data pipelines

  open-sourceAPI
• 📚 Podcast Index

  Open-source database preserving decentralized podcasting for independent SEO research

  open-sourceAPI
• 🚀 IndexNow

  Protocol for instant notification to search engines when website content is created or updated

  freeAPI
• ⚙️ SERPAPI (G0)

  High-performance Go library for interacting with major search engine scraping APIs

  open-sourceAPI
• ⚡ IndexNow Python Script

  CLI tool to automate bulk URL submissions to IndexNow API

  open-sourceAPI
• 🤖 AutoGPT

  Experimental open-source application showcasing the capabilities of the GPT-4 language model for SEO automation

  open-sourceAPI
• 📂 ELK Stack (Elasticsearch)

  The standard for searching, analyzing, and visualizing log data in real-time at scale

  open-sourceAPI
• 📊 Grafana

  Observability and BI platform used for real-time SEO monitoring dashboards

  open-sourceAPI
• 🕸️ Scrapy

  Powerful open-source web crawling framework for Python developers to build custom SEO scrapers

  open-sourceAPI
• 📦 Huginn

  Open-source system for building agents that monitor and act on web changes

  open-sourceAPI
• ⚡ AMP Browser Extension

  Instantly validates Accelerated Mobile Pages and provides real-time debugging for web developers

  open-source
• 🌐 Lighthouse

  Open-source automated tool for improving the quality of web pages including SEO and performance

  open-source
• 🔐 Bitwarden (Self-Hosted)

  Open-source password management solution that can be hosted on your own infrastructure

  open-sourceAPI
• 📈 Matomo Analytics

  Leading open-source web analytics platform that gives you full control over your SEO data

  open-sourceAPI
• 🌀 Matomo Heatmaps

  Privacy-focused heatmap plugin for the leading open-source analytics platform

  paidAPI
• 🌑 Dark Reader

  Enables dark mode for every website to reduce eye strain during long SEO audit sessions

  open-source
• 📊 Matomo

  Privacy-focused open-source web analytics platform that provides 100% data ownership

  open-sourceAPI
• 📦 Haystack by Deepset

  Open-source NLP framework for building search systems with verifiable citations

  open-sourceAPI
• 🏗️ Netlify CMS (Decap)

  Open-source Git-based CMS for static site generators with simple SEO markdown config

  open-source
• 🧪 Logstash

  Server-side data processing pipeline that ingests data from multiple sources

  open-sourceAPI
• 📦 Rendertron

  A headless Chrome rendering solution designed to render & serialise web pages on the fly

  open-sourceAPI
• 📂 Filebeat

  Lightweight shipper for forwarding and centralizing log data from servers

  open-source
• 🔍 OWASP ZAP

  The world’s most widely used web app scanner for finding vulnerabilities

  open-sourceAPI
• 🤖 Tabula

  Tool for liberating data tables trapped inside PDF files into CSV for SEO keyword research

  open-source
• 📖 LanguageTool

  Open-source grammar, style, and spell checker for high-quality SEO content

  open-sourceAPI
• 📶 Wappalyzer

  Identify web technologies on websites including CMS frameworks and payment processors

  open-sourceAPI
• 🛒 OpenCart

  Free open-source eCommerce platform with a massive marketplace for SEO extensions

  open-sourceAPI
• 🐙 Thumbor

  Open-source smart imaging service which allows on-demand cropping, resizing and flipping of images

  open-sourceAPI
• 🔗 Yourls

  Your Own URL Shortener - open-source PHP scripts for custom domain routing

  open-sourceAPI
• 🖼️ ImageMagick

  The industry-standard open-source software suite for creating, editing, and converting bitmap images

  open-sourceAPI
• 🏗️ OpenProject

  Open-source project management for secure SEO infrastructure

  open-sourceAPI
• 🛠️ ExifTool

  Powerful command-line application for reading writing and editing document metadata including PDF and images

  open-source
• 🧪 Taiga

  Open-source project management for agile SEO teams

  open-sourceAPI
• 📑 Tota11y

  An accessibility visualization toolkit that helps visualize how a page performs with assistive technology

  open-source
• 🐧 Countly

  Product analytics for mobile and web that can be self-hosted for complete data control

  freemiumAPI
• 🧪 SiteSpeed.io

  Open-source tool suite that helps you measure and monitor the performance of your web pages

  open-sourceAPI
• 📊 PDF-Miner

  Data extraction tool that helps SEOs turn PDF content into crawlable HTML or text formats

  open-sourceAPI
• 🚀 Varnish Cache

  High-performance HTTP accelerator for caching content and improving response times

  open-sourceAPI
• 🛠️ MozJpeg

  Open-source JPEG encoder that improves compression while maintaining full compatibility

  open-source
• 🧩 A11y Project

  A community-driven effort to make digital accessibility easier to understand and implement

  free
• 🏗️ Jovo Framework

  Open-source framework for building professional voice apps across multiple platforms and devices

  open-sourceAPI
• 🧲 Singer

  Open-source standard for writing scripts that move SEO data

  open-sourceAPI
• 🛠️ Accessibility Developer Tools

  Library of accessibility audit rules used by Google in various testing environments

  open-source
• 🕸️ Common Crawl

  Open repository of web crawl data that can be used for large-scale link graph analysis

  open-sourceAPI
• 📊 Open-Web-Analytics

  Open source web analytics that provides similar features to Google Analytics

  open-sourceAPI
• 🚦 Apache Traffic Server

  Scalable HTTP intermediate and forward proxy server for high-performance routing

  open-sourceAPI
• 🧪 Wasabi

  Open-source A/B testing platform originally developed by Intuit for high-performance experiments

  open-sourceAPI
• 🛠️ Webhint

  Linting tool for the web that helps improve accessibility, speed, and cross-browser compatibility

  open-source
• 🗂️ Tab Wrangler

  Automatically closes inactive tabs to save memory and stay organized

  open-source
• 🕵️ Ghostery

  Privacy extension that shows trackers and allows you to block them to see page speed impact

  open-source
• 📏 Dimensions

  A tool for designers to measure screen dimensions in the browser for pixel perfect layouts

  open-source
• 📍 GMB API Tracker

  Custom scripts and tools for tracking GMB ranks via official Google APIs

  open-sourceAPI
• 📦 JSONView

  Formats and validates JSON responses in the browser for easier API and structured data debugging

  open-source
• 🍪 EditThisCookie

  Manage cookies for SEO testing including location spoofing and session management.

  open-source
• 🦾 Picfit

  An image resizing server written in Go that can use different storage backends like S3 or GCS

  open-sourceAPI
• 🗂️ Tab Manager Plus

  Efficiently manage hundreds of tabs with search filter and deduplication features

  open-source
• 🧱 Baidu MIP (Mobile Instant Pages)

  Open-source framework to speed up mobile pages for instant loading on Baidu Search results

  open-source
• 💡 LinkClump

  Allows you to open copy or bookmark multiple links at once by dragging a selection box

  open-source
• 🧐 Yoast Real-time Content Analysis

  SDK for developers to integrate Yoast-style SEO analysis into custom publishing platforms

  open-sourceAPI
• 🛡️ CSP Evaluator

  Evaluates Content Security Policies to detect bypasses and improve site security

  open-sourceAPI
• 🐍 Extruct

  Python library for extracting structured data from HTML files supporting Microdata and JSON-LD

  open-sourceAPI
• 🖼️ Image Downloader

  Bulk download all images on a page with filtering by size and type

  open-source
• 🎨 WhatFont

  The easiest way to identify fonts on web pages by simply hovering over the text

  open-source
• 🔗 Linkclump

  Drag a box around links to open them all in new tabs or copy them to clipboard

  open-source
• 🧹 Clear Cache

  One-click cache and data clearing to test live SEO changes without browser lag.

  open-source
• 🔍 DuckDuckHack

  Open source community for building Instant Answers and plugins for DuckDuckGo

  open-sourceAPI
• 🔓 SeoPanel

  Open source SEO control panel for managing multiple sites and tracking keyword rankings in one place

  open-sourceAPI
• 🏗️ Check My Links

  Link crawler that finds broken links on a webpage to assist in technical SEO cleanup

  open-source
• 📦 SerpApi Client Libraries

  Open-source wrappers for SerpApi across 10+ languages to simplify SEO data integration

  open-sourceAPI
• 🔲 Clear Cache Shortcut

  One-click button to clear browser cache and cookies for testing fresh site changes

  open-source
• 📊 Koko Analytics

  Privacy-friendly analytics plugin for WordPress that does not use cookies or external services

  open-source
• 🎨 Eye Dropper

  Color picker that allows you to pick colors from any webpage or color picker interface

  open-source
• 🔗 Open Multiple URLs

  Paste a list of URLs and open them all in new tabs simultaneously

  open-source
• 📂 Link Gopher

  Browser extension to extract all links from a webpage and sort them for outreach lists

  open-source
• ⚡ AMP Validator

  Official tool to validate Accelerated Mobile Pages for news performance and compliance

  free
• 🏗️ Drupal Simple XML Sitemap

  The standard module for Drupal to generate multilingual and custom entity sitemaps automatically

  open-sourceAPI
• 💻 Gnu-Wget

  Command-line utility for retrieving files using HTTP/HTTPS frequently used for site mirroring

  open-source
• 🗣️ NVDA Screen Reader

  Free and open-source screen reader for Windows enabling blind people to use computers

  free
• 🗺️ OpenStreetMap

  The free wiki world map often used as a data source for local geo tools

  open-sourceAPI
• 🧪 OptiPNG

  An advanced PNG optimizer that recompresses image files to a smaller size without losing information

  open-source
• 🏗️ Scribus

  Open-source desktop publishing software capable of creating highly structured and SEO-ready PDFs

  open-source
• 📡 SmokePing

  Latentcy logging and graphing system for monitoring network connections

  open-source
• 📊 Zabbix Performance

  Enterprise monitoring solution that can be configured to track website performance metrics

  open-sourceAPI
• 🏗️ Payload CMS

  Next-generation headless CMS with TypeScript support and extensible SEO configuration hooks

  open-sourceAPI
• 🤖 Postiz

  Open-source social media and SEO content scheduling platform with AI insights

  open-sourceAPI
• 🔗 Kutt

  Modern open-source URL shortener with custom domains and analytics routing

  open-sourceAPI
• 🤖 ScrapeGraphAI

  Open-source Python library for scraping search results using Large Language Models

  open-sourceAPI
• 🌐 Linkwarden

  Self-hosted collaborative bookmark manager with routing preservation and archiving

  open-sourceAPI
• 🤖 Perplexica

  Advanced AI-powered search engine and open-source Perplexity alternative

  open-sourceAPI
• 🔗 Dub.co

  Open-source link management infrastructure for modern marketing teams

  freemiumAPI
• 🎯 Serpbear

  Self-hosted open-source search engine rank tracking software

  open-sourceAPI
• 🔄 Forwardmail

  Privacy-focused open-source service for email and domain forwarding routing

  freemiumAPI
• 📝 Scribe

  Open-source markdown-based documentation and SEO platform for developer-centric content marketing

  open-sourceAPI
• 📊 SerpBear

  Open-source search engine rank tracking software that allows you to track your website rankings for free

  open-sourceAPI
• 🎯 LinkStack

  Self-hosted link-in-bio platform for managing backlink landing pages and professional profiles

  open-source
• 🕸️ Carbonalyser

  Evaluate the environmental impact of your website based on data transfer

  open-source
• 🧬 LinkExtractor

  Open-source Python library for extracting and monitoring backlinks from raw HTML and web crawls

  open-sourceAPI
• 📝 TextGenerator

  Open-source AI content generation and SEO tool with community-driven team templates

  open-sourceAPI
• 🧪 GEO-Bench

  Open-source benchmark for evaluating Generative Engine Optimization strategies

  open-sourceAPI
• 📈 Serp-Explorer

  Open-source rank tracker that scrapes search results without expensive proxies

  open-sourceAPI
• 📖 ALwrity

  Open-source AI digital marketing platform supporting RAG and SERP factual content generation

  open-sourceAPI
• 🔬 LLM-Explorer-Open

  Open source framework to test how different prompt structures affect site visibility

  open-sourceAPI
• 🛠️ SEOEstate

  Open-source website crawler and technical SEO analyzer for developers and technical consultants.

  open-source
• 📦 Zeno

  Open-source crawler and SEO toolset for developers built with Node.js

  open-sourceAPI
• 🛠️ SEO Audits Toolkit

  All-in-one open-source collection for website health and security

  open-sourceAPI
• 🔧 SEOnaut

  Comprehensive open-source SEO audit tool for deep site scans

  open-source
• 👣 Swetrix

  Fully open-source and privacy-focused analytics with deep focus on performance and SEO tracking

  open-sourceAPI
• 🦕 Dino DNS

  Open-source, lightweight DNS record manager designed for fast SEO testing and domain mapping

  open-sourceAPI
• 🚀 Indexing API Tool

  Open-source script for bulk-sending URLs to Google’s Indexing API via Google Sheets

  open-sourceAPI
• 📊 LLM Analytics

  Open-source framework to track how LLMs cite and reference website content

  open-sourceAPI
• 📊 RankTools

  Open-source command line tool for monitoring keyword rankings across major engines

  open-source
• 📑 SEO Dash

  Open-source dashboard template for tracking SEO performance across multiple domains

  open-source
• 🛠️ SEOlizer

  Open-source tool for real-time log analysis and technical SEO monitoring

  open-source
• 🛠️ Search Engine Scanner

  Fast open-source CLI for scraping search engine results

  open-sourceAPI
• 📦 Serply

  Open-source Python library for scraping search engine results for SaaS dev teams

  open-sourceAPI
• 📍 Dalton

  Open-source local search rank tracker and citation audit tool for developers and small agencies

  open-sourceAPI
• 🐍 PySEO Keyword Tool

  Python-based open source tool for programmatically generating keyword reports and clusters

  open-sourceAPI
• 🦖 RustySEO

  Cross-platform marketing toolkit for deep crawl and server log analysis

  open-sourceAPI
• 🐢 Slowpoke

  Open-source desktop tool to analyze and visualize website performance over time

  open-source
• 📐 LLM-Visibility-Library

  Open-source repository for benchmarking site appearance in various Large Language Models

  open-source
• 🧩 Favicon-Switcher

  Small JS library to switch favicons based on media queries like dark mode or system theme changes

  open-sourceAPI
• 📏 Sa11y

  Accessibility checker that focuses on content and provides visual cues for editors within their CMS

  open-source
• 🕵️ Search-One Local SEO Tool

  Open-source repository for scraping local search results and identifying competitors

  open-source
• 🤖 SEO Python Library

  Open-source library for automating technical SEO tasks like redirect checks and meta analysis

  open-sourceAPI
• 🤖 Local-LLM-SEO

  Open-source scripts for bulk generating localized service pages using Llama 3 or GPT-4

  open-sourceAPI
• ⚡ Dynamic Favicon

  JavaScript library that allows developers to change favicons dynamically based on user status or site notifications

  open-sourceAPI
• 🛠️ Keywell

  Open-source utility for semantic keyword grouping and basic topic modeling for developers

  open-sourceAPI
• ⚙️ Site-Audit-CLI

  High-performance CLI tool for technical SEO audits and dead link detection

  open-source
• 📝 ContentSwift

  Open-source content research and optimization tool for semantic SEO

  open-source
• 🛠️ SEOPivot

  Emerging open-source desktop dashboard for monitoring site health and schema

  open-source
• 💻 Search engine keywords

  CLI tool for fetching keyword suggestions from various search engine autocomplete APIs

  open-source
• 🔍 Crux.vis

  A clean dashboard for visualizing your domain's historical Chrome User Experience Report data trends

  free
• ⚡ Ferryman

  Open-source tool for handling large-scale e-commerce SEO redirects and path mapping

  open-sourceAPI
• 🐙 Gmerlin

  Open-source email verification tool designed for high-speed checking of link building lists

  open-sourceAPI
• 🔧 Greenflare

  Open-source desktop SEO crawler for privacy-conscious technical website audits

  open-source
• 🤖 Hugging Face SEO Description

  AI tool to generate meta descriptions and titles using LLMs

  freeAPI
• 🤖 LLM-Benchmark-Crawler

  Scripts to automate querying multiple LLMs and tracking brand citation frequency

  open-sourceAPI
• 🐍 PySEO

  Open-source Python framework for custom scheduled SEO crawling and data extraction

  open-sourceAPI
• 💻 Serpident

  Open-source light-weight rank tracker for personal or agency use

  open-source
• 📈 Slim SEO

  Automated and lightweight SEO plugin with zero configuration required for beginners

  free
• 🧠 Ant-Team Yandex XML Tools

  Specialized scripts and tools for managing Yandex XML limits and parsing tasks

  open-source
• 🐍 Map-Tracker

  Open-source python script to track local search rankings on Google Maps via SerpApi

  open-sourceAPI
• 🐍 Naver-SEO-Python

  Python scripts for automating Naver Search Advisor tasks and checking indexing status via CLI

  open-source
• 🛠️ LinkBuildingTools

  Open-source repository of scripts and workflows for link prospecting and domain validation

  open-source
• 🐙 SEO.js

  Open-source JavaScript library for checking SEO best practices in code

  open-source
• 🏷️ Klustr

  Open-source Python library for hierarchical keyword clustering and automated taxonomy generation

  open-sourceAPI
• 📜 Scry

  Open-source oracle search explorer for tracking price feed SEO accuracy

  open-sourceAPI
• 📂 Photon

  Incredibly fast crawler designed for OSINT and domain profiling

  open-source
• 🏠 Ackee

  Self-hosted privacy-focused analytics tool for developers who care about their own data

  open-sourceAPI
• 📈 Anvaka Sayit

  Interactive graph visualization of subreddit relationships to identify niche clusters and link opportunities

  open-source
• 🌲 GoatCounter

  Open-source web analytics service that is easy to use and meaningful without tracking individuals

  open-sourceAPI
• 📊 SocioBoard

  Open-source social media management with white-label capabilities for marketing agencies

  open-sourceAPI
• 🛠️ YouTube Transcript Extractor

  Utility for developers to programmatically pull video transcripts for SEO analysis

  open-sourceAPI
• 📦 Staticman

  Open-source static site comment engine for building community on JAMstack sites

  open-sourceAPI
• 🌌 Shynet

  Modern self-hosted web analytics that works without cookies or JavaScript for extreme privacy

  open-source
• 🛠️ BestIcon

  A simple favicon service written in Go that can find and proxy favicons for any website with a single API call

  open-sourceAPI
• 📉 Yellow Lab Tools

  Open-source online test that detects performance smells and front-end code quality issues

  open-source
• 🧩 A11y Machine

  Automated accessibility testing tool that crawls a website and generates a visual report of issues

  open-source
• ⚡ Sitemap Generator CLI

  Node.js command-line interface tool to generate sitemaps for any website directly from the terminal

  open-source
• 🕷️ Abot

  Open-source crawler for developers to build custom scheduled technical SEO audits

  open-sourceAPI
• 📱 Ally.js

  Library to help modern web applications with accessibility, focus management, and keyboard navigation

  open-source
• 🔗 Broken Link Checker

  Open-source CLI tool to find broken links and server errors across entire domains

  open-source
• 🎈 Offen

  Fair web analytics that requires user consent and treats website owners and users as equals

  open-source
• 🐚 Puppeteer-Renderer

  Simple web service to render web pages as HTML or PDF using Puppeteer backend

  open-sourceAPI
• 🏗️ Static Jinja

  Open-source library to build static websites with Jinja2 templates

  open-source
• 🛠️ Domain MOD

  Open-source application to manage your domains and registrars

  open-source
• 🗄️ Web Archives

  Browser extension to view archived and cached versions of web pages

  open-source
• 🧪 Favicon Grabber

  Open-source API and tool to extract the highest resolution favicon from any website URL for competitive research

  open-sourceAPI
• ⚓ Anchor Image

  Lightweight image server for self-hosting with built-in on-the-fly resizing and cropping

  open-sourceAPI
• 🎯 LinkSource

  Open-source link prospect management tool for organizing potential domains and tracking contact status

  open-sourceAPI
• 📱 MobiMetrics

  Open-source script collection for basic mobile rank tracking

  open-sourceAPI
• 🤖 PDF-XRay

  Python-based tool for extracting and analyzing PDF structures to identify SEO issues or hidden data

  open-source
• 📊 SEO Mapper

  Open-source tool to visualize internal linking and site architecture

  open-source
• 🐙 SEO-Checker

  Node.js based open source SEO checker for developers

  open-source
• 🛠️ SEO-Go

  Lightweight open-source CLI for checking meta tags and broken links

  open-source
• 🧪 Sitemapper

  High-performance open-source sitemap generator and validator for large-scale enterprise web architectures

  open-sourceAPI
• 📦 Taudio

  Open-source repository for audio processing and metadata extraction for SEO

  open-source
• 🤖 Text-to-JSON Schema

  Open source utility to convert unstructured text into valid Schema.org JSON-LD snippets

  open-source
• 🔍 Ubersuggest-Open

  Community maintained scraper for keyword suggestions and search volume data

  open-sourceAPI
• 💬 YouTube Comment Suite

  Open-source tool for managing and analyzing thousands of YouTube video comments

  open-source
• 🧪 Content-Auditor

  Open-source Python script for analyzing site-wide content quality and planning updates

  open-source
• 📏 Page Ruler Redux

  Measure page elements in pixels for layout and UX optimization

  open-source
• 📦 SEO-Scraper-JS

  High-performance Javascript scraper designed to extract SEO metrics and meta data from large batches of URLs

  open-sourceAPI
• 🔍 Serp-Api (Open Source)

  Self-hosted SERP scraping API using Puppeteer and Node.js for private data pipelines

  open-sourceAPI
• 📂 Site-Inspector

  Open-source tool to find broken links and common technical SEO errors

  open-source
• 🎭 User-Agent Switcher

  Switch between different user-agents to test mobile and bot crawling

  open-source
• 🔎 Wordsmith

  An open-source script alternative for Google Sheets to handle bulk keyword research and SERP analysis via API

  open-sourceAPI
• 📄 Quick Source Viewer

  A refined view of the page source with syntax highlighting and resource grouping

  open-source
• 🌊 Imager

  Simple and lightweight image manipulation library for PHP with a focus on ease of use

  open-sourceAPI
• 🧰 Tanaguru

  Open-source automated accessibility assessment tool focused on high-volume website testing

  open-sourceAPI
• 🧩 Extensions Manager

  Toggle browser extensions on and off quickly to avoid memory bloat and conflicts

  open-source
• 📋 Copy All URLs

  Quickly copy all open tab URLs to the clipboard in multiple formats for research sharing

  open-source
• ⏱️ Page Load Time

  Minimalist extension that displays the exact loading time of a webpage in the browser toolbar

  open-source
• 🏃 Stet

  Open-source privacy-first website analytics server designed for high-performance self-hosting

  open-source
• 🏗️ Alt Text Tester

  Hover over images to see their alt text and identify missing attributes for accessibility

  open-source
• 🔗 Link Grabber

  Extracts all links from a webpage and displays them in a sortable list

  open-source
• ✅ A11ygator

  Web tool and API that analyzes a page and provides a clear list of accessibility improvements

  freeAPI
• 📂 Analog

  Extremely fast log file analyzer that provides basic traffic and bot statistics

  open-source
• 🔗 BacklinkChecker

  Open-source Python utility for monitoring backlink status and detecting removed links

  open-source
• 📦 Delta

  Simple desktop app to monitor web elements and get native notifications

  free
• 🛠️ Go-SEOSpider

  CLI-based website crawler written in Go for high-speed technical SEO audits

  open-source
• 🔍 Keywords Every Day

  Open source alternative for keyword and competitor lookup

  open-source
• 📦 NAP Hunter

  Chrome extension to search for Name, Address, and Phone inconsistencies across the web

  open-source
• 📦 NapHunter

  Open-source script for finding NAP inconsistencies for local SEO audits

  open-source
• 🔍 SSEO

  Open source technical SEO analyzer for identifying onsite optimizations

  open-source
• 🐍 Schema.org Scanner

  Open source CLI tool for scanning entire domains for schema health

  open-source
• 🦴 Skeleton

  Open-source crawler for identifying broken links and SEO issues in a CLI environment

  open-source
• 🖼️ View Image Info

  Extracts image metadata including alt text, file size, and dimensions directly from the browser.

  open-source
• 🏛️ Wiki-Audit Tool

  Open-source script for checking Wikipedia and Wikidata mentions to audit brand authority

  open-sourceAPI
• 💬 Word Counter Plus

  Simple tool to count words and characters in selected text on any web page

  open-source
• 🔗 NoFollow Simple

  Highlights all nofollow and sponsored links on a page to visualize internal link equity

  open-source
• 📊 WordCounter

  Quickly count words and characters of selected text on any webpage

  open-source
• ⚡ Quick SEO

  A lightweight toolbar for quick access to domain and page SEO metrics

  open-source
• 📋 Simple URL Copy

  One-click to copy current URL or all URLs from a window with clean formatting

  open-source
• 🔍 Suckless SEO Checker

  Ultra-minimalist CLI tool for checking basic on-page SEO factors

  open-source
• 📝 HARO SEO Filters

  Open-source script to filter HARO emails for high-relevance link opportunities

  open-source
• 🌐 SeoToaster

  Open-source CMS and e-commerce platform with built-in scheduled SEO crawling

  open-source
• 🔌 WP Local SEO

  WordPress plugin for local business schema and map integration

  open-source
• 📦 hreflang-php

  Lightweight PHP library for generating and managing SEO-compliant hreflang HTML tags in backend applications

  open-source
• 🧪 Favicon Grabber API

  Fast and reliable JSON API to retrieve a website's favicon and touch icons for use in applications

  open-sourceAPI
• 🛠️ Sitemap XML Editor

  Open source desktop editor for Windows to manage and edit extremely large XML sitemaps offline

  open-source

Frequently asked questions