Polar
Payments and billing for developers
Open-source (Apache-2.0) merchant-of-record billing platform for developers selling software, subscriptions and usage.
Best for: Indie devs who want an MoR with handled tax and good DX
Visit Polar ↗82
score / 100
- Pricing
- Starter: 5% + 50¢ per transaction; Pro $20/mo at 3.8% + 40¢
- Free tier
- Yes: no monthly fee on Starter
- Open source
- Yes
- Last verified
- 2026-10-15
Score breakdown
- Fit for the use case22 / 25
- Vibe-coder friendliness13 / 15
- Output quality & reliability12 / 15
- Pricing & free tier11 / 15
- Ecosystem & integrations7 / 10
- Momentum8 / 10
- Code ownership & lock-in9 / 10
Why this score: MoR, open source and developer-first. Per-transaction fees are higher than raw Stripe.
Based on desk research of official pricing pages and docs; see methodology.