head to head · open source
Medusa vs mall4j
Medusa has 36,356 GitHub stars, 5,260 forks, 194 open issues and last shipped yesterday. mall4j has 5,255 stars, 1,360 forks, 14 open issues and last shipped 4 days ago. Medusa leads on adoption by 592% (36,356 vs 5,255 stars). Medusa is written in TypeScript under a custom or non-standard licence; mall4j is written in JavaScript under AGPL-3.0. Medusa has attracted 14% as many forks as stars, mall4j 26%. Medusa was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ecommerce), so they are genuine substitutes rather than adjacent tools.
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 | mall4j | |
|---|---|---|
| GitHub stars | ★ 36K | ★ 5.3K |
| License | Custom / other | AGPL-3.0 |
| Written in | TypeScript | JavaScript |
| Last push | 2026-09-17 | 2026-09-14 |
| Forks | ⑂ 5.3K | ⑂ 1.4K |
| 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 mall4j if
- You want the mall4j 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 mall4j 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 mall4j
Mall4j is a Java mall system source code product family whose main open source repository provides a Spring Boot 4 and Vue3 B2C single merchant e commerce storefront and admin backend, written for developers and teams who want to study, evaluate, or build on a Java mall codebase.
read the full mall4j overview →
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Frequently asked questions
Is Medusa or mall4j more popular?
Medusa has 36,356 GitHub stars and mall4j has 5,255. Medusa has the larger community by that measure.
Are Medusa and mall4j free?
Both are open source. Medusa has no licence declared in this registry, and mall4j is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between Medusa and mall4j?
Medusa is written in TypeScript and mall4j 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, Medusa or mall4j?
Choose Medusa if you want the larger community (36,356 stars) or its Custom / other licence terms. Choose mall4j if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.