head to head · open source
Ntfy vs DoubleZero
Ntfy has 34,282 GitHub stars, 1,605 forks, 393 open issues and last shipped 3 days ago. DoubleZero has 1,248 stars, 65 forks, 9 open issues and last shipped 1.9 years ago. Ntfy leads on adoption by 2,647% (34,282 vs 1,248 stars). Ntfy is written in Go under Apache-2.0; DoubleZero is written in Elixir under AGPL-3.0. Ntfy has attracted 5% as many forks as stars, DoubleZero 5%. Ntfy 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
| Ntfy | DoubleZero | |
|---|---|---|
| GitHub stars | ★ 34K | ★ 1.2K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Go | Elixir |
| Last push | 2026-09-15 | 2024-10-22 |
| Forks | ⑂ 1.6K | ⑂ 65 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Ntfy if
- You weight community size — 34K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick DoubleZero if
- You want the DoubleZero 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 DoubleZero fits your workflow better
About Ntfy
ntfy is an HTTP based publish subscribe notification service that delivers push notifications to phones and desktops via simple REST API calls. It operates in the open source notification ecosystem, providing a lightweight alternative to proprietary push notification infrastructure. Users publish messages to topics via standard HTTP methods, and subscribers receive them instantly on registered devices.
About DoubleZero
DoubleZero, also called 00, is a self hosted email dashboard for developers. It is written in Elixir, released under AGPL 3.0, and lives in the AWS Simple Email Service ecosystem. The README describes it as a dashboard for sending and monitoring emails with AWS SES.
read the full DoubleZero overview →
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Frequently asked questions
Is Ntfy or DoubleZero more popular?
Ntfy has 34,282 GitHub stars and DoubleZero has 1,248. Ntfy has the larger community by that measure.
Are Ntfy and DoubleZero free?
Both are open source. Ntfy is licensed under Apache-2.0 and DoubleZero under AGPL-3.0. Neither carries a licence fee.
What is the difference between Ntfy and DoubleZero?
Ntfy is written in Go and DoubleZero 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, Ntfy or DoubleZero?
Choose Ntfy if you want the larger community (34,282 stars) or its Apache-2.0 licence terms. Choose DoubleZero if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.