head to head · open source
marketingskills vs Sendune
marketingskills has 58,064 GitHub stars, 8,533 forks, 154 open issues and last shipped 3 days ago. Sendune has 2,304 stars, 144 forks, 2 open issues and last shipped 5 months ago. marketingskills leads on adoption by 2,420% (58,064 vs 2,304 stars). marketingskills is written in JavaScript under MIT; Sendune is written in TypeScript under MIT. marketingskills has attracted 15% as many forks as stars, Sendune 6%. marketingskills 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
| marketingskills | Sendune | |
|---|---|---|
| GitHub stars | ★ 58K | ★ 2.3K |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-10-31 | 2026-06-08 |
| Forks | ⑂ 8.5K | ⑂ 144 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick marketingskills if
- You weight community size — 58K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- 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 marketingskills
Marketing Skills for AI Agents A collection of AI agent skills focused on marketing tasks. Built for technical marketers and founders who want AI coding agents to help with conversion optimization, copywriting, SEO, analytics, and growth engineering. Works with Claude Code, OpenAI Codex, Cursor, Windsurf, and any agent that supports the Agent Skills spec. Built by Corey Haines. Need hands on help? Check out Conversion Factory — Corey's agency for conversion optimization, landing pages, and growth strategy. Want to learn more about marketing? Subscribe to Swipe Files. Want to get dangerously good at using AI for…
read the full marketingskills 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 →
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Frequently asked questions
Is marketingskills or Sendune more popular?
marketingskills has 58,064 GitHub stars and Sendune has 2,304. marketingskills has the larger community by that measure.
Are marketingskills and Sendune free?
Both are open source. marketingskills is licensed under MIT and Sendune under MIT. Neither carries a licence fee.
What is the difference between marketingskills and Sendune?
marketingskills is written in JavaScript 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, marketingskills or Sendune?
Choose marketingskills if you want the larger community (58,064 stars) or its MIT licence terms. Choose Sendune if its feature set, stack or MIT licence fits better. Both are self-hostable.