head to head · open source
reaction vs Smartstore
reaction has 12,400 GitHub stars, 2,169 forks, 96 open issues and last shipped 8 months ago. Smartstore has 1,741 stars, 607 forks, 530 open issues and last shipped yesterday. reaction leads on adoption by 612% (12,400 vs 1,741 stars). reaction is written in JavaScript under GPL-3.0; Smartstore is written in C# under AGPL-3.0. reaction has attracted 17% as many forks as stars, Smartstore 35%. Smartstore 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
| reaction | Smartstore | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 1.7K |
| License | GPL-3.0 | AGPL-3.0 |
| Written in | JavaScript | C# |
| Last push | 2026-03-01 | 2026-11-02 |
| Forks | ⑂ 2.2K | ⑂ 607 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick reaction if
- You weight community size — 12K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick Smartstore if
- You want the Smartstore feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches C#
- You evaluated both and Smartstore fits your workflow better
About reaction
Mailchimp Open Commerce (formerly Reaction Commerce) Open Commerce Website Twitter Documentation Discord Discussions Mailchimp Open Commerce is an API first, headless commerce platform built using Node.js, MongoDB, and GraphQL. It plays nicely with npm, Docker and Kubernetes. Features Fast Returns data in split seconds, and faster queries mean faster web pages Proven Open Commerce fuels sites doing 10's of thousands of orders per day with 100's of thousands of products Composable A flexible plugin system allows you to pick and choose which integrations work best for you Multi tenant Host multiple shops in the…
read the full reaction overview →
About Smartstore
Ready. Sell. Grow. A modular, scalable, and ultra fast open source all in one eCommerce platform built on ASP.NET Core 10. Try Online & 8729; Developer Guide & 8729; Forum & 8729; Marketplace & 8729; Translations Smartstore is a cross platform, modular, scalable, and ultra fast open source all in one eCommerce platform built on ASP.NET Core 10 , Entity Framework Core 10 , Vue.js , Sass , Bootstrap , and more. Smartstore includes all the essential features to create multi language, multi store, and multi currency shops , with built in AI capabilities for text and image generation powered by the world's leading AI…
read the full Smartstore overview →
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Frequently asked questions
Is reaction or Smartstore more popular?
reaction has 12,400 GitHub stars and Smartstore has 1,741. reaction has the larger community by that measure.
Are reaction and Smartstore free?
Both are open source. reaction is licensed under GPL-3.0 and Smartstore under AGPL-3.0. Neither carries a licence fee.
What is the difference between reaction and Smartstore?
reaction is written in JavaScript and Smartstore in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, reaction or Smartstore?
Choose reaction if you want the larger community (12,400 stars) or its GPL-3.0 licence terms. Choose Smartstore if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.