head to head · open source
novu vs proton-lumo
novu has 40,002 GitHub stars, 4,494 forks, 105 open issues and last shipped yesterday. proton-lumo has 5,590 stars, 711 forks, 155 open issues and last shipped yesterday. novu leads on adoption by 616% (40,002 vs 5,590 stars). novu is written in TypeScript under a custom or non-standard licence; proton-lumo is written in TypeScript under GPL-3.0. novu has attracted 11% as many forks as stars, proton-lumo 13%. novu was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (react), so they are genuine substitutes rather than adjacent tools.
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
| novu | proton-lumo | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 5.6K |
| License | Custom / other | GPL-3.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 4.5K | ⑂ 711 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick novu if
- You weight community size — 40K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick proton-lumo if
- You want the proton-lumo feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and proton-lumo fits your workflow better
About novu
Novu is an open source communication infrastructure platform for building and managing multi channel notifications in products and connecting them to AI agents. It lives in the Node.js/TypeScript ecosystem and targets developers who need to send and receive messages across email, SMS, push, in app inbox, chat, and collaboration tools like Slack and Microsoft Teams.
About proton-lumo
Proton WebClients is a monorepo hosting the Proton web clients. It lives in the Proton ecosystem and holds the web applications, their dependencies, shared modules, and all tooling surrounding web client development. Applications inside include Proton Mail, Proton Calendar, Proton Drive, Proton Account, Proton VPN, Proton Pass, Proton Wallet, Proton Lumo, and Proton Meet. Code and data files ship under GNU General Public License version 3.
read the full proton-lumo overview →
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Frequently asked questions
Is novu or proton-lumo more popular?
novu has 40,002 GitHub stars and proton-lumo has 5,590. novu has the larger community by that measure.
Are novu and proton-lumo free?
Both are open source. novu has no licence declared in this registry, and proton-lumo is licensed under GPL-3.0. Both are free to self-host.
What is the difference between novu and proton-lumo?
novu is written in TypeScript and proton-lumo 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, novu or proton-lumo?
Choose novu if you want the larger community (40,002 stars) or its Custom / other licence terms. Choose proton-lumo if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.