v0.18.2
now in public beta

An IDE for working
with codingagents

Mainframe gives you an Agentic IDE: a workspace of panels, tools, and guardrails. Plan, diff, review and ship — together, without losing the thread or the keyboard.

Open sourcemac · win · linux
Agents
Claude · Codex · Gemini
Runtime
Local, sandboxed, mobile

▸ share the keyboard with the agent. jump in, take over, hand back — like pairing with someone who never tires.