head to head · open source
reaction vs grandnode2
reaction has 12,400 GitHub stars, 2,169 forks, 96 open issues and last shipped 8 months ago. grandnode2 has 1,339 stars, 553 forks, 85 open issues and last shipped yesterday. reaction leads on adoption by 826% (12,400 vs 1,339 stars). reaction is written in JavaScript under GPL-3.0; grandnode2 is written in C# under GPL-3.0. reaction has attracted 17% as many forks as stars, grandnode2 41%. grandnode2 was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (docker, ecommerce, ecommerce-platform, mongodb), 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
| reaction | grandnode2 | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 1.3K |
| License | GPL-3.0 | GPL-3.0 |
| Written in | JavaScript | C# |
| Last push | 2026-03-01 | 2026-11-02 |
| Forks | ⑂ 2.2K | ⑂ 553 |
| 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 grandnode2 if
- You want the grandnode2 feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches C#
- You evaluated both and grandnode2 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 grandnode2
OPEN SOURCE E COMMERCE PLATFORM FREE, FAST, FLEXIBLE, FEATURE RICH GrandNode is a powerful, scalable e Commerce platform built with MongoDB and ASP.NET Core. Based on the modern MongoDB database, this fully open source system supports multiple business models: B2B, B2C, Multi Store, Multi Vendor, Multi Tenant, Multi Language, Multi Currency. Achieve superior performance, unlimited scalability, and comprehensive customization to drive your online business success. Explore the project » View Demo · Report Bug · Request Feature · Visit forum · Themes · Integrations & Plugins · Premium support Table of Contents…
read the full grandnode2 overview →
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Frequently asked questions
Is reaction or grandnode2 more popular?
reaction has 12,400 GitHub stars and grandnode2 has 1,339. reaction has the larger community by that measure.
Are reaction and grandnode2 free?
Both are open source. reaction is licensed under GPL-3.0 and grandnode2 under GPL-3.0. Neither carries a licence fee.
What is the difference between reaction and grandnode2?
reaction is written in JavaScript and grandnode2 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 grandnode2?
Choose reaction if you want the larger community (12,400 stars) or its GPL-3.0 licence terms. Choose grandnode2 if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.