head to head · open source
Plunk vs Keila
Plunk has 5,474 GitHub stars, 401 forks, 61 open issues and last shipped 4 days ago. Keila has 2,211 stars, 167 forks, 76 open issues and last shipped 2 days ago. Plunk leads on adoption by 148% (5,474 vs 2,211 stars). Plunk is written in TypeScript under AGPL-3.0; Keila is written in Elixir under AGPL-3.0. Plunk has attracted 7% as many forks as stars, Keila 8%. Keila 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
| Plunk | Keila | |
|---|---|---|
| GitHub stars | ★ 5.5K | ★ 2.2K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | TypeScript | Elixir |
| Last push | 2026-09-14 | 2026-09-16 |
| Forks | ⑂ 401 | ⑂ 167 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Plunk if
- You weight community size — 5.5K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Keila if
- You want the Keila feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Elixir
- You evaluated both and Keila fits your workflow better
About Plunk
Plunk is an open source email platform written in TypeScript and released under the AGPL 3.0 license. It combines transactional email, marketing campaigns, and workflow automation in a single system, and it is positioned as a self hosted alternative to SendGrid, Resend, and Mailgun. The project lives in the TypeScript and Node.js ecosystem, ships as a Docker image, and is documented at docs.useplunk.com with a community Discord for support.
read the full Plunk overview →
About Keila
Keila is an open source newsletter and email marketing tool written in Elixir and licensed under AGPL 3.0. It is presented as an open alternative to Mailchimp and Sendinblue, and it lives in the open source email marketing and newsletter ecosystem for people who want to manage campaigns and subscriber sign ups without relying only on a paid hosted service.
read the full Keila overview →
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Frequently asked questions
Is Plunk or Keila more popular?
Plunk has 5,474 GitHub stars and Keila has 2,211. Plunk has the larger community by that measure.
Are Plunk and Keila free?
Both are open source. Plunk is licensed under AGPL-3.0 and Keila under AGPL-3.0. Neither carries a licence fee.
What is the difference between Plunk and Keila?
Plunk is written in TypeScript and Keila in Elixir. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Plunk or Keila?
Choose Plunk if you want the larger community (5,474 stars) or its AGPL-3.0 licence terms. Choose Keila if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.