Project comparison
Compare adoption, momentum, maintenance health, and project basics before choosing which tool to evaluate deeper.
Portable AI agent orchestration with mechanical protocol enforcement. 186 agents, zero runtime dependencies.
Best matched with other agent tools.
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Best matched with other agent tools.
ECC has the larger GitHub footprint with 272.5K stars.
ECC is currently growing faster at +52.6K stars this week.
ECC has the stronger automated maintenance signal at 93/100. This is not a security or fit verdict.
Use these signals to narrow your choice, then confirm setup, license, and fit upstream.
| Signal | Harmonist | ECC |
|---|---|---|
| Evidence status | Basic listing· 2026-10-04 09:17 UTC | Verified snapshot· 2026-10-04 09:19 UTC |
| GitHub stars | 1.5K | 272.5K |
| Weekly growth | 0 | +52.6K |
| Health score | Caution27/100 | Strong93/100 |
| Contributors | 1 | 295 |
| Commits per week | 0.2 | 62.2 |
| Open issues | 1 | 105 |
| Language | Python | JavaScript |
| License | MIT | MIT |
| Last commit | 2026-04-23 05:48 UTC | 2026-10-02 02:01 UTC |
| Last release | v1.0.0 | v2.0.0 |
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