subspace
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The agent-first workspace for product builders

The Best Agents.
The Best Models.
Parallel Work.
Zero Amnesia.

Use the best agents and models from one fast, keyboard-first Mac app. Every Topic keeps its sessions, terminals, docs, files, websites, Git, and Shared Memory together—so parallel work stays clear and every new session starts caught up.

Download for Mac · FreeWindows? Get notified →
Parallel Topics · Shared Memory · one continuous workflow
The agents you trust. The models you want.
Claude Code Codex OpenCode Gemini Cursor Copilot Amp Factory Droid OpenClaw Kiro
The complete workflow

Everything around agent work, together.

Choose the intelligence, do the work, carry the context, and review the result from one fast, keyboard-first app built for product builders.

01

The best agents. The best models.

Open Agent Chat or launch supported CLI agents with the access you already have. Inside Claude Code, reach leading open-source, proprietary, and frontier models through OpenRouter.

Agents + models 02

One app for the whole job.

Sessions, terminals, docs, files, websites, comments, artifacts, and Git workflows stay with the feature, fix, or exploration they belong to.

Command Palette 03

Zero amnesia.

Shared Memory carries progress, decisions, and open questions across agents, models, and sessions—without another skill or plugin to install and manage.

Shared Memory
Work
Agent Chat + CLI

The best agent. The best model. For this job.

Work in Agent Chat or launch the supported CLI agent that fits the task, using the provider access and subscriptions you already have. Switch agents without leaving the work or rebuilding the environment around it.

Inside Claude Code, reach leading open-source, proprietary, and frontier models through OpenRouter—including Kimi K3, GLM 5.2, Grok 4.5, and more—while keeping the skills, MCPs, plugins, and setup you already rely on.

Agent Chat · Claude Code · OpenRouter · supported CLI agents
Start
Command Palette

One shortcut to launch—or find—anything.

Agents, sessions, terminals, docs, files, websites, and Topics: open what you need from one keyboard-first command palette.

No app sprawl. No hunting through windows to remember where you were working or what needs your attention.

Cmd+K · agents · sessions · terminals · docs · files · websites
Continue
Shared Memory

New session. Same memory.

Progress, decisions, blockers, and open questions stay with the Topic—not one chat window, one agent, or one model. Start a new session, switch agents, or return tomorrow and the useful context comes forward automatically.

There is no separate memory skill or plugin to install, configure, and remember to invoke. Shared Memory comes built in, stays visible and searchable, and helps every agent pick up where the last one left off.

Agents · models · sessions · automatic recall
Parallel by default

Parallel work, without the window maze.

Give every feature, fix, or exploration its own Topic and isolated Git worktree. Run several at once while their agents, working surfaces, status, and next actions stay clear.

Three Topics in parallel One organized view
  • Feature Onboarding flow topic/onboarding
    1. Scope
    2. Build
    3. Review
    4. Ship
    Building
  • Fix Session restore topic/session-restore
    1. Scope
    2. Build
    3. Review
    4. Ship
    In review
  • Explore Model routing topic/model-routing
    1. Scope
    2. Build
    3. Review
    4. Ship
    Scoping
Review
Comments + Branching

Point to the work. The context comes with it.

Comment on a conversation turn, a line in a doc or file, or the source component behind a browser view. Collect feedback where you see it, then send the agent one coherent review with the context attached.

No copy-and-paste relay. No contextless “move the thing on the left.” When a promising direction deserves its own path, branch the conversation from that point without losing the original.

Conversation turn · file line · browser component · branch
Review
HTML Artifacts

Turn explanations into something you can see.

Some work should be seen and used—not flattened into another long Markdown document. Turn an answer into a prototype, report, comparison, dashboard, spec, or PR explainer.

Agents can author self-contained HTML Artifacts inside the Topic. Preview them inline, click through the result, share it, and iterate from something concrete.

Prototype · inspect · share · iterate
Ship
Ship Loop

One click closer to shipped.

Keep Git beside the agents, context, and review that produced the change. Move from finished work to a clean merge without reconstructing what happened in another app.

Subspace surfaces the next action while you stay in control from scope through commit, merge, and continuation.

  1. 01 Scope
  2. 02 Build
  3. 03 Commit
  4. 04 Merge
  5. 05 Continue
Still deciding?

Ask an agent if Subspace fits the way you build.

Open a balanced prompt in an AI you already trust. It will read the site, weigh the tradeoffs, and tell you where Subspace fits—and where it doesn’t.

Ask ChatGPT Ask Claude Ask Perplexity Ask Gemini Ask Grok
The complete product

The whole workspace is free.

The best agents and models, parallel Topics, Shared Memory, in-context collaboration, the Ship Loop, and every working surface are included.

  • Agent Chat + supported CLI agents
  • Leading OpenRouter models inside Claude Code
  • Parallel Topics + every working surface
  • Shared Memory across agents + sessions
  • Comments + branching + HTML Artifacts
  • Ship Loop + Git workflows

Subspace is free. Bring your existing provider plan or API access. Any provider usage is billed separately by that provider; Subspace does not resell it.

Download for Mac · Free

On Windows? Join the waitlist →

FAQ

Common questions.

What’s actually free?
The whole Subspace product: Agent Chat, supported CLI agents, Topics, Shared Memory, docs, files, browser, comments, HTML Artifacts, terminals, Git, and the Ship Loop. Subspace is free. Bring your own provider subscription or API access; any model or agent usage is billed separately by that provider.
Can I use my existing Claude Code or Codex subscription?
Yes. Subspace is designed to work with the provider access you already have. Sign in to supported agent CLIs as you normally would, then run them inside the workspace. Subspace itself is free; your provider continues to handle any subscription or usage charges.
What is a Topic?
A Topic is the durable home for one body of work. Create one instantly with Cmd+N, name it, and go. Every Topic is a Git worktree under the hood, so you can build features, fix bugs, do research, and create prototypes in parallel without conflicts. Its agent sessions, Shared Memory, docs, files, browser, comments, artifacts, terminals, and Git state all stay together.
Why use Subspace instead of talking to an agent directly?
A direct agent session is useful, but the surrounding work quickly spreads across dedicated agent apps, terminals, editors, browsers, notes, and Git tools. Subspace gives that entire workflow one home. Use Agent Chat or supported CLI agents, keep every working surface with its Topic, collaborate through source-linked comments and HTML Artifacts, and carry useful context between agents, models, and sessions with Shared Memory. You still choose the agent and approve the work; Subspace keeps everything around it legible.
Is my code sent to your servers?
Subspace does not upload your codebase to our servers. Your agents run locally in your terminal. To build Memory, Subspace uses each request/response pair to create a token-efficient observation through OpenAI. Memory can be turned off, or you can use your own OpenRouter or OpenAI API key for that processing.
What does Shared Memory remember?
Shared Memory captures useful context about the work: progress, decisions, blockers, and what remains open. It belongs to the Topic rather than one chat window, agent, or model, so every new session can continue from the same project context. It is built in—there is no separate memory skill or plugin to install and remember to invoke. You and the agent can search what Subspace remembers whenever you need to recover a past decision or its surrounding context.
Does it work with my existing setup?
Yes. Subspace runs supported CLI agents in real terminals, so you can keep using the provider access and agent configuration you already have.
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.

The best agents. The best models. One place to do the work.

Work in parallel. Collaborate in context. Start every session caught up.

Download for Mac · Free Windows? Get notified →

Subspace is free · Provider usage billed separately · macOS