head to head · open source
Medusa vs ach
Medusa has 36,356 GitHub stars, 5,260 forks, 194 open issues and last shipped yesterday. ach has 564 stars, 203 forks, 17 open issues and last shipped yesterday. Medusa leads on adoption by 6,346% (36,356 vs 564 stars). Medusa is written in TypeScript under a custom or non-standard licence; ach is written in Go under Apache-2.0. Medusa has attracted 14% as many forks as stars, ach 36%. Medusa 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
| Medusa | ach | |
|---|---|---|
| GitHub stars | ★ 36K | ★ 564 |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Go |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 5.3K | ⑂ 203 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Medusa if
- You weight community size — 36K 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 ach if
- You want the ach feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and ach fits your workflow better
About Medusa
Medusa is an open source e commerce framework built with Node.js and TypeScript that enables developers to construct custom commerce applications without rebuilding core commerce logic. It provides modular, pluggable backend services for products, orders, inventory, payments, and customer management, all exposed via REST and GraphQL APIs. Medusa lives in the JavaScript/Node.js ecosystem and targets developers who need full control over their storefronts and business logic while relying on battle tested, open source primitives.
read the full Medusa overview →
About ach
ACH is an Apache 2.0 Go library and HTTP service from Moov that reads, writes, and validates Automated Clearing House (ACH) files against the Nacha standards, built for developers who need to generate or parse ACH files inside their own payment software.
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Frequently asked questions
Is Medusa or ach more popular?
Medusa has 36,356 GitHub stars and ach has 564. Medusa has the larger community by that measure.
Are Medusa and ach free?
Both are open source. Medusa has no licence declared in this registry, and ach is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Medusa and ach?
Medusa is written in TypeScript and ach in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Medusa or ach?
Choose Medusa if you want the larger community (36,356 stars) or its Custom / other licence terms. Choose ach if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.