head to head · open source
ECC vs ACI.dev
ECC has 297,140 GitHub stars, 43,927 forks, 225 open issues and last shipped 3 days ago. ACI.dev has 4,931 stars, 487 forks, 63 open issues and last shipped 4 days ago. ECC leads on adoption by 5,926% (297,140 vs 4,931 stars). ECC is written in JavaScript under MIT; ACI.dev is written in Python under Apache-2.0. ECC has attracted 15% as many forks as stars, ACI.dev 10%. ECC was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (ai-agents, developer-tools, llm, mcp), 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
| ECC | ACI.dev | |
|---|---|---|
| GitHub stars | ★ 297K | ★ 4.9K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Python |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 44K | ⑂ 487 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ECC if
- You weight community size — 297K 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 ECC
Language: English العربية Português (Brasil) 简体中文 繁體中文 日本語 한국어 Türkçe Русский Tiếng Việt ไทย Deutsch Español Українська Polski বাংলা [!WARNING] Official sources only. Install ECC only from verified channels: the GitHub repository github.com/affaan m/ECC, the npm packages ecc universal and ecc agentshield , the GitHub App, the plugin slug ecc@ecc , and the project website ecc.tools. Third party re uploads and unofficial mirrors are not maintained or reviewed by the project and may contain malware. Install with Claude Code Use the guided setup or native plugin commands. Both install the same ecc@ecc plugin. Choose…
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 ECC or ACI.dev more popular?
ECC has 297,140 GitHub stars and ACI.dev has 4,931. ECC has the larger community by that measure.
Are ECC and ACI.dev free?
Both are open source. ECC is licensed under MIT and ACI.dev under Apache-2.0. Neither carries a licence fee.
What is the difference between ECC and ACI.dev?
ECC 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, ECC or ACI.dev?
Choose ECC if you want the larger community (297,140 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.