Subspace
Download · Free
The Agent-First Workspace

Stop re-explaining your codebase
to every new agent.

Run Claude Code, Codex, OpenCode, and other CLI agents side by side — with shared memory that makes sessions feel infinite. The lightning fast, keyboard-first Mac app for people already working agent-first.

Plan
Free · unlimited
Memory
Cross-agent
Platform
macOS · M1+
Install
~3 min
Works with every CLI agent
Claude Code Codex OpenCode Gemini Cursor Copilot Amp Factory Droid OpenClaw Kiro

How it works

~3 min to install

Up and running in three steps.

Step / 01

Add a project

Point Subspace at a folder. It creates workspaces for your project and any worktrees, and backfills memory from your recent agent sessions.

Step / 02

Work the way you already do

Launch Claude Code, Codex, or any agent from the command palette. Agents run in real terminals. Docs, files, the browser, and git all live in the same window.

Step / 03

Every session starts informed

Memory builds automatically. Tomorrow’s first session already knows what today accomplished, decided, and left open — across every agent you ran.

Watch

2 min walkthrough

What is Subspace?

Memory

Your agents already know.

Hit /clear and everything’s gone. The decisions. The dead ends. The plan. You’re back to re-explaining it all.

Subspace builds memory in the background. Every conversation turn is compressed into a token-efficient observation with structured tags — decisions, blockers, progress. Every few turns, a status update synthesizes recent work into a clear picture of where things stand. Your agents can search this memory mid-session — by text, tag, workspace, or timeline.

When a new session starts, that context is already there. Claude Code context flows to Codex and OpenCode. The memory belongs to the workspace, not any single tool. Everything Subspace remembers is visible in the app — no black box.

Observations · Status updates · Decision logs
Multi-Agent

Any agent. Any model. All at once.

You shouldn’t have to pick one agent and hope it’s best at everything. Run any CLI agent side by side — Claude Code, Codex, OpenCode, Gemini, Cursor, Copilot, Amp, OpenClaw, Kiro. Use the best tool for each task.

When one gets stuck, tag in another — it already knows what’s been tried. Memory is shared across every agent in the workspace (Claude Code, Codex, and OpenCode to start). The sidebar shows who’s working, who needs input, who’s done.

A single-vendor workspace will never seriously support its competitors. We can. We have to.

Claude Code · Codex · OpenCode · Gemini · +6 more
Workspaces

Organize the chaos.

Agents made you faster. Your tools didn’t keep up. You’re Alt-Tabbing between terminals, editors, browsers, git clients, and notes apps — more windows than ever, less visibility than ever.

Subspace puts all of it in one app. Agents, terminals, docs, files, browser, and git — grouped into workspaces, persisted across restarts. Switch between projects in under 100ms.

One workspace per branch · sub-100ms switches
Command Palette

Cmd+K. That’s it.

One input for everything. Launch an agent with a typed prompt. Switch workspaces. Open files. Run shell commands. Search your browser history. Between the palette and keyboard shortcuts, you barely touch the mouse — Subspace was built keyboard-first from the ground up.

Cmd+K · agents, files, terminals, workspaces
Comments & Browser

Reply to your agents like a colleague.

Select text in a terminal, doc, or browser and leave a comment — exactly like reviewing a colleague’s work. Queue feedback from multiple spots and fire it as one batch.

Browser comments trace to the source component, file, and line via the React fiber tree. No grepping. No “I think it’s in Header.tsx.” Direct from what you see, the agent works from where it lives.

Anchor a comment · queue a batch · ship the fix
HTML Artifacts

When prose isn’t enough, ship a page.

Some work doesn’t fit in a chat reply. A prototype. A dashboard. A side-by-side comparison. A PR explainer a reviewer can actually click through. Asking an agent for those usually ends in copy-pasted markdown and a Notion doc nobody opens.

In Subspace, agents author HTML artifacts directly in the workspace — self-contained, browser-viewable pages you preview inline, iterate on, and validate before anyone else sees them. One command publishes the artifact to a trusted `subspace.build/s/<slug>` URL you can drop into Slack or a PR.

Mockups, reports, specs, demos, decision aids — the things you used to describe, your agents can now hand you a page for. Teammates open the link. Reviewers click through. Nothing leaves your machine until you publish.

Prototype · review · publish · /s/:slug
Personal Agents · Coming soon

Hire your team. Run them like an org.

Today, standing up a personal agent means spelunking docs, Reddit, and X to wire up skills, MCPs, identity, and memory — then redoing it all on the next major version. We’re fixing that.

Personal Agents in Subspace: one click, a short wizard, and you have a teammate. A PR reviewer. A daily-research agent. A design critic. An analyst, a marketer, a project manager — running on desktop, callable from your phone. Hire, assign work, retire underperformers. Build an agent org chart that compounds.

5 minutes & a GSD attitude. Not 3 hours and a PhD.
Your agent org chart
• Live
PR
Reviewer-01
Pull-request reviewer
Working
RS
Hermes-Research
Daily-research agent
Ready
DS
Design-Critique
UI critique
Idle
AN
Analyst-Mini
PostHog SQL analyst
Working
MK
Marketer-01
Drafts posts + threads
Ready
+
Hire another agent…
Wizard · 5 min
Still deciding?

Ask your AI if Subspace fits you.

Click to open a balanced prompt for an AI you already trust. It will read the site, weigh tradeoffs, and tell you where Subspace fits and where it doesn’t.

Ask ChatGPT logo Ask ChatGPT Ask Claude logo Ask Claude Ask Perplexity logo Ask Perplexity Ask Gemini logo Ask Gemini Ask Grok logo Ask Grok
Pricing

Free forever. Pro unlocks memory.

Start free. Upgrade when memory becomes your secret weapon.

No projects cap. No workspaces cap. Every agent CLI. The whole keyboard-first workspace. Pro adds the layer that makes Subspace stop being a launcher and start feeling like a teammate.

Free
$0 /forever

Everything you need to run agents day-to-day. Unlimited.

  • Unlimited projects & workspaces
  • Every agent CLI, side by side
  • Command palette + agent launcher
  • Browser pane + comments
  • Ship Loop guardrails
  • Workspace persistence across restarts
Download for Mac · Free
Coming soon
Teams
Soon

Shared memory across teammates. Workspace sync. Admin, billing, SSO.

  • Everything in Pro
  • Shared memory across teammates
  • Workspace + memory sync across machines
  • Admin, billing, SSO
  • Priority support
Get notified →

On Windows? Join the waitlist →

FAQ

Common questions.

What’s actually free?
Everything you need to run agents day-to-day. Unlimited projects, unlimited workspaces, every agent CLI running side by side, the command palette, the browser pane, comments, and the Ship Loop guardrails. The Pro upgrade unlocks Memory (background capture, status updates, cross-session replay, search), publishing/sharing HTML Artifacts like prototypes, specs, or presentations, and auto-drafted commits + PRs. Memory is where Subspace stops being a launcher and starts feeling like a teammate.
How is this different from Cursor?
Cursor requires a subscription for access to the models they support. Subspace is built to work with your existing Claude Code, Codex, Gemini, Devin, Factory (the list goes on) subscription. Subspace makes working with your existing coding agents better. You can run Claude Code, Codex, OpenCode, Gemini — side by side, with shared memory across all of them.
Is my code sent to your servers?
No. Your agents run locally in your terminal. Subspace observes the conversation transcript to build memory, but your code stays on your machine. Memory is stored locally, and you can opt out of analytics instrumentation anytime.
How is memory different from Claude or Codex Memory?
Claude and Codex memory are designed to capture individual decisions and preferences, and they don’t share. Subspace memory is designed so every conversation can pick up exactly where you left off: what you worked on, why, what was accomplished, what’s left to do. They’re complementary. Together they make every chat feel infinite.
Does it work with my existing setup?
Yes. Subspace runs the actual CLI binaries. Your ~/.claude config, API keys, and agent settings work exactly as they do today. Nothing is wrapped or proxied.
When does Windows ship?
Windows is in active development — codename ballmer. The Mac app is shipping today; the Windows build is the next major platform on the roadmap. Get on the list and we’ll email you the day the beta opens.

Where agents & humans work together.

It’s time to build.

Free forever · Pro 14-day trial · No credit card · macOS · Apple Silicon