Updated March 27, 2026
ECA (Editor Code Assistant) is a free, open-source, editor-agnostic AI coding tool that connects LLMs to code editors through a protocol inspired by LSP. It supports VS Code, Emacs, Neovim, and IntelliJ, and works with multiple model providers including OpenAI, Anthropic, GitHub Copilot, and Ollama.
Open-source desktop app for running multiple coding agents in parallel, each isolated in its own git worktree.
Core capabilities each platform advertises.
What each tool does well, and the limitations to keep in mind.
Pros
Cons
Pros
Cons
Choose ECA if you wantChoose if you want
Choose Emdash if you wantChoose if you want
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 500+ models through one gateway.
Try Respan free