head to head · open source
Sylius vs mercur
Sylius has 8,538 GitHub stars, 2,157 forks, 225 open issues and last shipped yesterday. mercur has 1,774 stars, 446 forks, 4 open issues and last shipped 3 days ago. Sylius leads on adoption by 381% (8,538 vs 1,774 stars). Sylius is written in PHP under MIT; mercur is written in TypeScript under MIT. Sylius has attracted 25% as many forks as stars, mercur 25%. Sylius 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
| Sylius | mercur | |
|---|---|---|
| GitHub stars | ★ 8.5K | ★ 1.8K |
| License | MIT | MIT |
| Written in | PHP | TypeScript |
| Last push | 2026-09-19 | 2026-09-17 |
| Forks | ⑂ 2.2K | ⑂ 446 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Sylius if
- You weight community size — 8.5K stars and counting
- You want the MIT license terms
- Your stack matches PHP
- You value the larger contributor base for long-term maintenance
pick mercur if
- You want the mercur feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and mercur fits your workflow better
About Sylius
Sylius is a headless, open source eCommerce platform built on top of PHP, the Symfony framework, and API Platform. It is distributed under the MIT license and has been developed for roughly fifteen years, with the current repository carrying about 8,500 stars, 2,100 forks, and 225 open issues. The project was originally created by Paweł Jędrzejewski and is maintained by a broad contributor base. It sits in the PHP and Symfony ecosystem, and it is positioned as a framework rather than a finished storefront: developers build the commerce application on top of it instead of configuring a hosted product.…
read the full Sylius overview →
About mercur
Mercur is an open source, headless marketplace platform written in TypeScript and built on Medusa.js. It provides a storefront, vendor panel, admin console, and integrations as modular applications that communicate with a commerce core over APIs. The project targets multi vendor commerce, where several sellers list offers on one marketplace, and it positions itself as an alternative to Mirakl.
read the full mercur overview →
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Frequently asked questions
Is Sylius or mercur more popular?
Sylius has 8,538 GitHub stars and mercur has 1,774. Sylius has the larger community by that measure.
Are Sylius and mercur free?
Both are open source. Sylius is licensed under MIT and mercur under MIT. Neither carries a licence fee.
What is the difference between Sylius and mercur?
Sylius is written in PHP and mercur in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Sylius or mercur?
Choose Sylius if you want the larger community (8,538 stars) or its MIT licence terms. Choose mercur if its feature set, stack or MIT licence fits better. Both are self-hostable.