head to head · open source
Polar vs idurar-erp-crm
Polar has 10,270 GitHub stars, 787 forks, 141 open issues and last shipped yesterday. idurar-erp-crm has 8,812 stars, 3,139 forks, 483 open issues and last shipped 1 months ago. Polar leads on adoption by 17% (10,270 vs 8,812 stars). Polar is written in Python under Apache-2.0; idurar-erp-crm is written in JavaScript under AGPL-3.0. Polar has attracted 8% as many forks as stars, idurar-erp-crm 36%. 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 | idurar-erp-crm | |
|---|---|---|
| GitHub stars | ★ 10K | ★ 8.8K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | JavaScript |
| Last push | 2026-09-17 | 2026-08-14 |
| Forks | ⑂ 787 | ⑂ 3.1K |
| 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 idurar-erp-crm if
- You want the idurar-erp-crm feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and idurar-erp-crm 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 idurar-erp-crm
IDURAR ERP CRM is a free, open source enterprise resource planning and customer relationship management application built on the MERN stack. The backend runs on Node.js with Express.js and MongoDB, while the frontend is written in React.js and uses the Ant Design component framework together with Redux for state management. The project is released under the GNU Affero General Public License v3.0, and the repository is written in JavaScript. It carries the accounting, ERP, CRM, invoicing, and e commerce topics on its registry entry, and the README describes it as open "fair code" source software.…
read the full idurar-erp-crm overview →
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Frequently asked questions
Is Polar or idurar-erp-crm more popular?
Polar has 10,270 GitHub stars and idurar-erp-crm has 8,812. Polar has the larger community by that measure.
Are Polar and idurar-erp-crm free?
Both are open source. Polar is licensed under Apache-2.0 and idurar-erp-crm under AGPL-3.0. Neither carries a licence fee.
What is the difference between Polar and idurar-erp-crm?
Polar is written in Python and idurar-erp-crm in JavaScript. 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 idurar-erp-crm?
Choose Polar if you want the larger community (10,270 stars) or its Apache-2.0 licence terms. Choose idurar-erp-crm if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.