Three families of Warp alternatives
Terminal replacements (Ghostty, Alacritty, Kitty, WezTerm, WaveTerm) replace the terminal itself. AI coding agents (OpenCode, Pi, Aider, Cline, Kilo, Grok Build) replace or extend Warp's AI development features. Multi-agent environments (Orca, OpenHands, Paseo, Superset) run several agents in parallel. Zed is an AI-native editor rather than a terminal.
The closest Warp-like experience
WaveTerm is the closest all-in-one terminal, combining AI, file previews, editing, a web browser, SSH management, and split layouts without requiring a login. OpenCode, Cline, and Aider add the AI layer to a terminal or editor you already use.
Terminals without AI
Ghostty, Alacritty, Kitty, and WezTerm focus on performance, rendering, and configurability rather than AI. Zellij is a terminal multiplexer for tabs, panes, layouts, and sessions, and it covers the workspace-management side of Warp. Pair any of them with an open-source coding agent for AI assistance.
Licensing caveats
Most projects here are MIT (Ghostty, Zellij, WezTerm, Pi, Orca, Kilo), Apache-2.0 (Alacritty, WaveTerm, Aider, Cline), or GPL (Kitty, Zed). Superset is source available under Elastic License 2.0 rather than standard open source. Check each repository's current license before adopting.