Browse free open source SEO tools and projects for Linux below. Use the toggles on the left to filter open source SEO tools by OS, license, language, programming language, and project status.
Open-source Answer Engine Optimization platform
World's first seo control panel for multiple websites
Open source alternative to Semrush and Ahrefs
Next SEO is a plug in that makes managing your SEO easier in Next.js
A specialized Claude Code workspace for creating long-form
GEO-first SEO skill for Claude Code
Plugin to add metadata tags for search engines and social networks
Professional SEO and GEO audit workflows for brands, SaaS teams
Golang text generator for generate SEO texts
A free, feature-rich web analyzer and exporter/cloner you will love!
Open-source SERP API for AI, SEO & automation - Google + 5 more
Free online developer tools JSON formatter, Base64 encoder, and more
This is a base PHP framework for making simple websites with clean URL
A cross-platform sitemap pnp handler written in Go.
AEO tracking toolkit (CLI + dashboard) built for AI agents like Claude
Intelligent SEO keyword miner and predicing tool
All-in-one AI marketing suite with 30+ tools for B2B & agencies.
Open Source SEO & SEM Text Creation Tools for free Article Writer
Professional SEO and GEO content workflows for brands, SaaS teams
Seo Tool: AI Autoblogger for ArtikelSchreiber.com and UNAIQUE.net