head to head · open source
OpenBB vs proton-lumo
OpenBB has 73,153 GitHub stars, 7,565 forks, 117 open issues and last shipped yesterday. proton-lumo has 5,590 stars, 711 forks, 155 open issues and last shipped yesterday. OpenBB leads on adoption by 1,209% (73,153 vs 5,590 stars). OpenBB is written in Python under a custom or non-standard licence; proton-lumo is written in TypeScript under GPL-3.0. OpenBB has attracted 10% as many forks as stars, proton-lumo 13%. OpenBB 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
| OpenBB | proton-lumo | |
|---|---|---|
| GitHub stars | ★ 73K | ★ 5.6K |
| License | Custom / other | GPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 7.6K | ⑂ 711 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenBB if
- You weight community size — 73K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- 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 OpenBB
OpenBB is an open source data platform for investment professionals, built as the Open Data Platform (ODP) and extended by the OpenBB Workspace UI. It lives in the quantitative finance and AI agent ecosystem, integrating equity, crypto, derivatives, fixed income, economics, and options data from proprietary, licensed, and public sources.
read the full OpenBB overview →
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 OpenBB or proton-lumo more popular?
OpenBB has 73,153 GitHub stars and proton-lumo has 5,590. OpenBB has the larger community by that measure.
Are OpenBB and proton-lumo free?
Both are open source. OpenBB 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 OpenBB and proton-lumo?
OpenBB is written in Python 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, OpenBB or proton-lumo?
Choose OpenBB if you want the larger community (73,153 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.