head to head · open source
claude-seo vs Sendune
claude-seo has 25,931 GitHub stars, 3,395 forks, 19 open issues and last shipped 2 days ago. Sendune has 2,304 stars, 144 forks, 2 open issues and last shipped 5 months ago. claude-seo leads on adoption by 1,025% (25,931 vs 2,304 stars). claude-seo is written in Python under MIT; Sendune is written in TypeScript under MIT. claude-seo has attracted 13% as many forks as stars, Sendune 6%. claude-seo 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.
← all 20902 open source comparisons
Side by side
| claude-seo | Sendune | |
|---|---|---|
| GitHub stars | ★ 26K | ★ 2.3K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-01 | 2026-06-08 |
| Forks | ⑂ 3.4K | ⑂ 144 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick claude-seo if
- You weight community size — 26K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Sendune if
- You want the Sendune feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Sendune fits your workflow better
About claude-seo
Claude SEO: SEO Skill for Claude Code Claude SEO is an open source SEO analysis plugin for Claude Code. It runs 25 sub skills and 18 specialist agents in parallel across technical SEO, content quality (E E A T), Schema.org markup, AI search optimization (GEO), local SEO, e commerce, and international SEO. Every audit produces a prioritized action plan with testable recommendations grounded in primary source guidance from Google. Two versions of this skill. 🌐 Public open source → AgriciDaniel/claude seo : MIT, public releases, no membership. Use this if you want stable + downloadable. 🔒 Community private mirror…
read the full claude-seo overview →
About Sendune
💌 Free, Open Source, HTML Email Editor and Designer. 👹 Who? This email designer was originally built for use within SENDUNE (formerly Send With SES). ⁉️ Why Choose SENDUNE Email Designer? Truly Open Source: Use it for personal use or commercial use or whatever. Truly Free: Because the ones that say 'free', are not. Truly Works: Because the ones that are free don't seem to work. Truly HTML: No intermediate code wranglers like mjml. Truly Fast and Light Weight: Because you have better things to do with your time. Truly No Code: Design like a pro without coding headaches. Our minimal interface gets out of your…
read the full Sendune overview →
More in Business Software
Related comparisons
More Marketing & Customer Engagement projects
Compare either of these against the rest of the Marketing & Customer Engagement field.
Frequently asked questions
Is claude-seo or Sendune more popular?
claude-seo has 25,931 GitHub stars and Sendune has 2,304. claude-seo has the larger community by that measure.
Are claude-seo and Sendune free?
Both are open source. claude-seo is licensed under MIT and Sendune under MIT. Neither carries a licence fee.
What is the difference between claude-seo and Sendune?
claude-seo is written in Python and Sendune in TypeScript. 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 Sendune?
Choose claude-seo if you want the larger community (25,931 stars) or its MIT licence terms. Choose Sendune if its feature set, stack or MIT licence fits better. Both are self-hostable.