head to head · open source
react vs ACI.dev
react has 251,895 GitHub stars, 51,629 forks, 1,377 open issues and last shipped 4 days ago. ACI.dev has 4,931 stars, 487 forks, 63 open issues and last shipped 3 days ago. react leads on adoption by 5,008% (251,895 vs 4,931 stars). react is written in JavaScript under MIT; ACI.dev is written in Python under Apache-2.0. react has attracted 20% as many forks as stars, ACI.dev 10%. ACI.dev 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
| react | ACI.dev | |
|---|---|---|
| GitHub stars | ★ 252K | ★ 4.9K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Python |
| Last push | 2026-10-31 | 2026-11-01 |
| Forks | ⑂ 52K | ⑂ 487 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick react if
- You weight community size — 252K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick ACI.dev if
- You want the ACI.dev feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and ACI.dev fits your workflow better
About react
React · React is a JavaScript library for building user interfaces. Declarative: React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. Declarative views make your code more predictable, simpler to understand, and easier to debug. Component Based: Build encapsulated components that manage their own state, then compose them to make complex UIs. Since component logic is written in JavaScript instead of templates, you can easily pass rich data through your app and…
read the full react overview →
About ACI.dev
ACI: Open Source Infra to Power Unified MCP Servers and VibeOps [!NOTE] This repo is for the ACI.dev platform. If you're looking for the Unified MCP server built with ACI.dev, see aci mcp. ACI.dev is the open source tool calling platform that hooks up 600+ tools into any agentic IDE or custom AI agent. It gives agents intent aware access to tools with multi tenant auth, granular permissions, and dynamic tool discovery—exposed as either direct function calls or through a Unified Model Context Protocol (MCP) server . Examples: Instead of writing separate OAuth flows and API clients for Google Calendar, Slack, and…
read the full ACI.dev overview →
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Frequently asked questions
Is react or ACI.dev more popular?
react has 251,895 GitHub stars and ACI.dev has 4,931. react has the larger community by that measure.
Are react and ACI.dev free?
Both are open source. react is licensed under MIT and ACI.dev under Apache-2.0. Neither carries a licence fee.
What is the difference between react and ACI.dev?
react is written in JavaScript and ACI.dev in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, react or ACI.dev?
Choose react if you want the larger community (251,895 stars) or its MIT licence terms. Choose ACI.dev if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.