head to head · open source
claude-seo vs mailcheap
claude-seo has 18,955 GitHub stars, 2,766 forks, 19 open issues and last shipped 11 days ago. mailcheap has 933 stars, 233 forks, 8 open issues and last shipped today. claude-seo leads on adoption by 1,932% (18,955 vs 933 stars). claude-seo is written in Python under MIT; mailcheap is written in JavaScript under AGPL-3.0. claude-seo has attracted 15% as many forks as stars, mailcheap 25%. mailcheap was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| claude-seo | mailcheap | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 933 |
| License | MIT | AGPL-3.0 |
| Written in | Python | JavaScript |
| Last push | 2026-10-04 | 2026-10-15 |
| Forks | ⑂ 2.8K | ⑂ 233 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick claude-seo if
- You weight community size — 19K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick mailcheap if
- You want the mailcheap feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and mailcheap fits your workflow better
About claude-seo
Claude SEO is an open source SEO analysis skill for Claude Code that runs 25 sub skills and 18 specialist agents in parallel across technical SEO, E E A T content quality, Schema.org markup, AI search optimization, local SEO, and reporting, built for SEO agencies, in house SEO leads, and freelance consultants who need repeatable, testable audits rather than one off tool output.
read the full claude-seo overview →
About mailcheap
MailCheap is an open source newsletter application in JavaScript — dashboard, public archive, REST API and MCP server in one Next.js app — for writers, teams and agent builders who want to keep their subscriber list in their own database and pay a sending provider per email instead of paying a platform per subscriber.
read the full mailcheap overview →
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Frequently asked questions
Is claude-seo or mailcheap more popular?
claude-seo has 18,955 GitHub stars and mailcheap has 933. claude-seo has the larger community by that measure.
Are claude-seo and mailcheap free?
Both are open source. claude-seo is licensed under MIT and mailcheap under AGPL-3.0. Neither carries a licence fee.
What is the difference between claude-seo and mailcheap?
claude-seo is written in Python and mailcheap in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, claude-seo or mailcheap?
Choose claude-seo if you want the larger community (18,955 stars) or its MIT licence terms. Choose mailcheap if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.