head to head · open source
marketingskills vs warmbly
marketingskills has 58,064 GitHub stars, 8,533 forks, 154 open issues and last shipped 3 days ago. warmbly has 866 stars, 159 forks, 17 open issues and last shipped yesterday. marketingskills leads on adoption by 6,605% (58,064 vs 866 stars). marketingskills is written in JavaScript under MIT; warmbly is written in Go under Apache-2.0. marketingskills has attracted 15% as many forks as stars, warmbly 18%. warmbly 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 | warmbly | |
|---|---|---|
| GitHub stars | ★ 58K | ★ 866 |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-10-31 | 2026-11-02 |
| Forks | ⑂ 8.5K | ⑂ 159 |
| 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 warmbly if
- You want the warmbly feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and warmbly 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 warmbly
The open source agentic cold email and warmup platform. Features · How it works · Quick start · Self hosting · Docs · Community · Support ⭐ Help us reach more senders and grow the Warmbly community. Star this repo! Warmbly Warmbly runs cold email campaigns from the mailboxes you already own and warms them so they keep landing in the inbox. Opens, clicks, and replies land in a shared dashboard the moment they happen, and it's AI native, so your team and its agents work in it together, live. Features Campaigns multi step sequences with per mailbox caps and spacing Unified inbox every mailbox and reply in one place…
read the full warmbly overview →
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Frequently asked questions
Is marketingskills or warmbly more popular?
marketingskills has 58,064 GitHub stars and warmbly has 866. marketingskills has the larger community by that measure.
Are marketingskills and warmbly free?
Both are open source. marketingskills is licensed under MIT and warmbly under Apache-2.0. Neither carries a licence fee.
What is the difference between marketingskills and warmbly?
marketingskills is written in JavaScript and warmbly in Go. 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 warmbly?
Choose marketingskills if you want the larger community (58,064 stars) or its MIT licence terms. Choose warmbly if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.