Ralph TUI vs. zerostack

Feature	Ralph TUI	zerostack

Tagline	AI agent loop orchestrator for terminal	Minimal Rust coding agent optimized for memory footprint
Website	https://ralph-tui.com	https://gi-dellav.github.io/zerostack/
Language	typescript	rust
Release Date	January 14, 2026	May 12, 2026
Last Updated	August 19, 2026	September 4, 2026
Provider Type	Independent	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep integration with git worktrees	deep
Multi-File Editing	Yes	Yes
Auto Test Running	No	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	None - Terminal only	Zed (via ACP), Neovim (via CodeCompanion.nvim + ACP)
Hooks / Extensions	No	Yes
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Depends on underlying agent	Model-dependent; auto-compaction
Supported Models	Orchestrates Coding Agents: Claude Code, OpenCode, Gemini CLI, Codex, Kiro, Droid, Cursor CLI.	OpenRouter (default), OpenAI, Anthropic, Gemini, Ollama, plus unlimited custom OpenAI-compatible endpoints (vLLM, LiteLLM, enterprise gateways)
Pricing Model	BYOK	Free, BYOK
Free Tier	Yes	Yes
Price Range	Free (BYOK)	Free (BYOK)
Source Code Availability	Open Source (MIT)	Open Source (GPL-3.0)
Source Code	https://github.com/subsy/ralph-tui	https://github.com/gi-dellav/zerostack
Development State	active	active