Subspace

Here's the deal with Subspace: it's a desktop app that runs all your AI coding agents — Claude Code, Codex, Cursor, Copilot, you name it — side by side in one workspace, with memory that actually sticks around between sessions. No more rebuilding context from scratch every time you switch tools. They're calling it Cross-Agent Memory, but honestly, it just means your decisions and dead ends follow you across agents instead of evaporating into the void. The real differentiator is that it works with any CLI agent, so you're not locked into one ecosystem — Subspace is playing the connective tissue game, and that's always the move.