head to head · open source
Plunk vs Keila
Plunk has 5,573 GitHub stars, 429 forks, 61 open issues and last shipped 2 days ago. Keila has 2,259 stars, 177 forks, 76 open issues and last shipped 3 days ago. Plunk leads on adoption by 147% (5,573 vs 2,259 stars). Plunk is written in TypeScript under AGPL-3.0; Keila is written in Elixir under AGPL-3.0. Plunk has attracted 8% as many forks as stars, Keila 8%. Plunk 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 | ★ 5.6K | ★ 2.3K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | TypeScript | Elixir |
| Last push | 2026-11-01 | 2026-10-31 |
| Forks | ⑂ 429 | ⑂ 177 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Plunk if
- You weight community size — 5.6K 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 The Open Source Email Platform Introduction Transactional emails, marketing campaigns, and workflow automation — in one platform. Self hostable, $0.001 per email, no contact limits. An open source, self hosted alternative to tools SendGrid, Resend or Mailgun. Features Transactional Emails : Send emails straight from your API with template support and variable substitution SMTP : Use Plunk as an SMTP relay to send emails from any existing tool or framework Campaigns : Send newsletters and product updates to large audiences Workflows : Create advanced automations with triggers, delays, and conditional logic…
read the full Plunk overview →
About Keila
Keila An Open Source Newsletter Tool Keila is an Open Source alternative to newsletter tools like Mailchimp or Sendinblue. With Keila you can easily send out newsletter campaigns and create sign up forms. For smaller newsletters, you can use your own email inbox to send out campaigns. For larger newsletter projects, AWS SES, Sendgrid, Mailgun, and Postmark are supported in addition to SMTP. Give Keila a Try! You can give a hosted version of Keila a try on app.keila.io. More information about the pricing of Keila Cloud here. If you want to deploy Keila on your own server, you can use the official Docker image…
read the full Keila overview →
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Frequently asked questions
Is Plunk or Keila more popular?
Plunk has 5,573 GitHub stars and Keila has 2,259. 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 (5,573 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.