Project comparison

Plannotator vs ECC

Compare adoption, momentum, maintenance health, and project basics before choosing which tool to evaluate deeper.

Annotate and review coding agent plans and code diffs visually, share with your team, send feedback to agents with one click.

Best matched with other agent tools.

8.3K

Stars

+310

Weekly

87/100

Health

ECC

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.

252.1K

Stars

+52.6K

Weekly

95/100

Health

Quick Take

Adoption

ECC has the larger GitHub footprint with 252.1K stars.

Momentum

ECC is currently growing faster at +52.6K stars this week.

Maintenance

ECC has the stronger automated maintenance signal at 95/100. This is not a security or fit verdict.

Side-by-side evidence

Use these signals to narrow your choice, then confirm setup, license, and fit upstream.

Signal	Plannotator	ECC
Evidence status	Basic listing· 10h ago	Recently verified· 10h ago
GitHub stars	8.3K	252.1K
Weekly growth	+310	+52.6K
Health score	Strong87/100

Weekly AI open-source movers

Get the fastest-growing projects, useful MCP servers, and technical reads in one weekly email.