head to head · open source
Polar vs Flowglad
Polar has 10,270 GitHub stars, 787 forks, 141 open issues and last shipped yesterday. Flowglad has 0 stars, 0 forks, 0 open issues and last shipped —. Polar leads on adoption by 0% (10,270 vs 0 stars). Polar is written in Python under Apache-2.0; Flowglad is written in various languages under a licence not recorded in this registry. Polar has attracted 8% as many forks as stars, Flowglad 0%. Polar 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
| Polar | Flowglad | |
|---|---|---|
| GitHub stars | ★ 10K | ★ 0 |
| License | Apache-2.0 | Custom / other |
| Written in | Python | — |
| Last push | 2026-09-17 | — |
| Forks | ⑂ 787 | ⑂ 0 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Polar if
- You weight community size — 10K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Flowglad if
- You want the Flowglad feature set and don't need the biggest community
- You evaluated both and Flowglad fits your workflow better
About Polar
Polar is an open source billing platform and payment infrastructure project for digital products, SaaS applications, and AI workloads. It is written in Python, licensed under Apache 2.0, and built around FastAPI, Next.js, React, and Turborepo. The project positions itself as a financial layer for software that needs to charge for tokens, agents, compute, subscriptions, and usage based models.
read the full Polar overview →
About Flowglad
Flowglad is a cross system automation and knowledge base project for accounting firms, listed in this registry under Business Software / Finance & Accounting.
read the full Flowglad overview →
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Frequently asked questions
Is Polar or Flowglad more popular?
Polar has 10,270 GitHub stars and Flowglad has 0. Polar has the larger community by that measure.
Are Polar and Flowglad free?
Both are open source. Polar is licensed under Apache-2.0, and Flowglad has no licence declared in this registry. Both are free to self-host.
What is the difference between Polar and Flowglad?
Polar is written in Python and Flowglad in various languages. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Polar or Flowglad?
Choose Polar if you want the larger community (10,270 stars) or its Apache-2.0 licence terms. Choose Flowglad if its feature set, stack or Custom / other licence fits better. Both are self-hostable.