7 Best OpenSEO Alternatives in 2026 (Open Source)
OpenSEO — Open source alternative to Semrush and Ahrefs. Provides MCP server and agent skills specifically for integrating SEO capabilities into AI agent workflows
Short answer
- Closest match to OpenSEO: Skills.
- Most actively developed: Activepieces (1,049 commits in the last 90 days).
- Fastest growing: Skills (+26,013 GitHub stars in the last 30 days).
These 7 open-source tools do the same job. They are ordered by how closely they match OpenSEO, with live GitHub data so you can see which projects are actively maintained.
| Tool | GitHub stars | Stars / 30d | Last commit |
|---|---|---|---|
| OpenSEO(original) | 22.1k | +3,495 | 2026-10-01 |
| Skills | 179.4k | +26,013 | 2026-09-29 |
| Khazix Skills | 21.1k | +420 | 2026-10-01 |
| Claude Code Skills & Plugins | 27.2k | +3,210 | 2026-08-26 |
| Garden Skills | 12.7k | +210 | 2026-07-12 |
| JeecgBoot | 48.1k | +210 | 2026-09-22 |
| Activepieces | 24.8k | +390 | 2026-10-01 |
| MaxKB | 22.9k | -30 | 2026-09-28 |
1. Skills
Public repository for Agent Skills
What sets it apart: Official Anthropic skill system for Claude with production-grade document skills (PDF/DOCX/PPTX/XLSX) and a standardized Agent Skills specification
Best for: Claude users wanting to extend capabilities with domain expertise; Teams building repeatable workflows in Claude; Developers creating Claude Code plugins
2. Khazix Skills
数字生命卡兹克开源的 AI Skills 合集 | Agent Skills: leader（帮你定义目标）, neat-freak 洁癖, hv-analysis, khazix-writer & more — Claude Code, Codex & 40+ agents
What sets it apart: A collection of practical, tested agent skills following an open interoperability standard.
Best for: Developers looking to extend agent capabilities with pre-built modules; Users of Claude Code, Codex, or other compatible agents; Those wanting structured, reusable agent instructions
3. Claude Code Skills & Plugins
Open-source library of 388 reusable skills, plugins, and agent personas for 13 AI coding tools
What sets it apart: The most comprehensive open-source library of Claude Code skills and agent plugins covering 13 different coding agent platforms.
Best for: Extending AI coding agents with specialized skills; Adding enterprise domain expertise to coding workflows; Creating reusable agent personas for different business functions
4. Garden Skills
ConardLi's open-source Skills collection, featuring web design, knowledge retrieval, image generation, and more.
What sets it apart: A curated, open-source collection of production-ready, modular skills specifically formatted for integration into AI coding agents.
Best for: developers building AI coding agents; adding modular functionality to coding assistants; prototyping agent capabilities quickly
5. JeecgBoot
AI low-code platform for generating systems, code, forms, and reports with chat and workflow orchestration
What sets it apart: Combines AI-powered natural language programming with enterprise low-code platform specifically for Java system generation and AI agent development.
Best for: Java developers automating repetitive coding tasks; Building enterprise AI applications with low-code; Creating AI agents with workflow orchestration
6. Activepieces
Open-source AI automation platform with TypeScript pieces available as MCP servers
What sets it apart: Largest open source MCP toolkit with 280+ pieces automatically available as MCP servers for LLM integration.
Best for: Building AI agents with MCP integration; Creating extensible AI workflows; Technical users wanting TypeScript customization
7. MaxKB
🔥 MaxKB is an open-source platform for building enterprise-grade agents.
What sets it apart: Combines enterprise-grade agent building with comprehensive RAG pipelines and MCP tool-use capabilities in an open-source package.
Best for: Enterprise agent development; Intelligent customer service systems; Corporate internal knowledge bases
FAQ
- What are the best alternatives to OpenSEO?
- The closest open-source alternatives to OpenSEO are Skills, Khazix Skills and Claude Code Skills & Plugins, followed by Garden Skills, JeecgBoot and Activepieces. They are ranked by how closely they match what OpenSEO does.
- Which OpenSEO alternative is the most popular?
- Skills has the most GitHub stars among OpenSEO alternatives, with 179,388 stars.
- Which OpenSEO alternative is the most actively maintained?
- By recent activity, Activepieces (1,049 commits in the last 90 days) is the most actively developed alternative.