Open source cloud agents. Your workspace.

An open-source alternative to Devin. Run agents in parallel, locally or in isolated cloud workspaces.

Download ZuseDSee how it works

Free in beta · no token markup

What should we build in forkzero?

How Zuse works

One repo. Many agents. No lost context.

  1. 01

    Bring the agents you already use

  2. 02

    Run work in parallel

  3. 03

    Carry context, then review

Bring the subscriptions you already pay for. Zuse orchestrates them with no token markup.

Claude Code
Codex
Cursor
Grok
Gemini
OpenCode
Pi
Kiro

Agent handoff

Continue the work with another agent

Plan with one model, continue with another

Start another provider session for implementation and attach the plan, transcript, or files it needs.

Planning session

Claude Code

Plan complete

Implementation session

Codex

Ready to start

Handoff context

Plan
Diff
Tests

Fork when a provider hits its limit

Fork the session to another provider and carry forward a copied transcript or explicit handoff context.

Continue this work

Choose a provider and context

New Codex session

Fork from here

Transcript

Copied

Files

Select to attach

Parallel work without
branch chaos.

agent/checkout-recovery

Running
Claude Code12 files · 16 tests

agent/session-race

In review
CodexPR #814 · 2 comments

agent/sidebar-cache

Cleaned
Claude CodeMerged · history kept

Every run stays isolated

Claude → Codex handoff

same worktree · same branch

Plan attached

Transcript attached

Diff · 12 files

Tests · 16 passing

Codex reviewing

Hand off the complete context

1.8 GB reclaimed

Branch preserved

Commits + run history kept

Worktree removed

Reclaim disk without losing work

One worktree

Multiple tabs, shared context

Claude Code · implementation

Build the change in one tab while every file lands in the shared worktree.

checkout-recovery

agent/checkout-recovery

Shared worktree
Claude Code

Implementation

Running
Terminal

Focused tests

16 passed
Codex

Diff review

Reviewing
Codex · diff review

Review the same branch and transcript in a second tab without copying context.

Shared context
Review the current diff and verify checkout recovery without editing.
Worktree tabs3
Codex · review
Connected
Claude Code · build
Connected
Checks · terminal

Keep typecheck, focused tests, and terminal output beside both agent sessions.

Claude · implementation
running
agent/checkout-recovery
Codex · diff review
2 findings
agent/checkout-recovery
Terminal · focused tests
16 passed
agent/checkout-recovery
Changes · 12 files
+184 −32
agent/checkout-recovery
Codex · review resolved
2 fixes
agent/checkout-recovery
PR #814 · ready
checks passed
agent/checkout-recovery
Claude · implementation
running
agent/checkout-recovery
Codex · diff review
2 findings
agent/checkout-recovery
Terminal · focused tests
16 passed
agent/checkout-recovery
Changes · 12 files
+184 −32
agent/checkout-recovery
Codex · review resolved
2 fixes
agent/checkout-recovery
PR #814 · ready
checks passed
agent/checkout-recovery
Claude · implementation
running
agent/checkout-recovery
Codex · diff review
2 findings
agent/checkout-recovery
Terminal · focused tests
16 passed
agent/checkout-recovery
Changes · 12 files
+184 −32
agent/checkout-recovery
Codex · review resolved
2 fixes
agent/checkout-recovery
PR #814 · ready
checks passed
agent/checkout-recovery

Review

From changed files to a verified pull request

Review every changed file

Branch review

Branch

agent/checkout-recovery

4 COMMITS

Changed files

9 modified · 2 added · 1 deleted

12 FILES

Branch diff

+182 additions · −47 deletions

DIFF

Uncommitted work

3 files ready to review

LOCAL

Review range ready

Compared with origin/main

READY

Inline diff review before push

+ guard retry
- stale state
test.ts
+ regression
16 passed
review
2 comments
resolved

Codex review: Retry only after the persisted checkout state is restored.

Commit selected files & push

agent/checkout-recovery
3 selected
auth/session.ts+18 −4
auth/recovery.ts+31 −0
auth.test.ts+22 −2
fix: recover expired checkout sessions
Commit 3 files
Push

Send failing checks to the agent

checkout-e2e

GitHub Actions · failed

exit 1

FAIL tests/auth-recovery.spec.ts

Expected redirect to /dashboard

Received /login?expired=true

36 log lines collected

Agent thread

agent/fix-auth

Failed check attached

failing-checks-0821.txt · 36 lines

Diagnosing session redirect…

Browser verification, built in

Import browser sessions

Local profiles

Chrome · Profile 1
Safari

Zuse browser

Session ready

3 signed-in sites

12 valid cookies copied

Cookies only

Passwords stay in your browser

Local transfer

Never written into agent chat

Drive the whole flow

Open /checkout

navigation

Enter card

input

Place order

click

Receipt visible

assert

Watch browser actions live

Claude CodeStep 3 failed: checkout button selector changed.
CodexUpdated the selector from the trace. Retrying now.
Claude Code4/4 steps passed · trace saved · 1.8s
checkout.local/receipt
receipt visible
trace captured

Describe what to verify

“Sign in, finish checkout, verify the receipt.”

checkout.spec.ts · generated

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Keep agent work moving anywhere

Connected

Agents in your pocket

Coming soon

Zuse desktop workspace
Agent finished

Full control at your desk

Available now

Agents that keep running

Cloud beta

Cloud beta

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Questions devs ask first

More questions? See the project on GitHub.

Zuse puts your coding agents, repositories, terminals, files, and diffs in one workspace. You can run several tasks in parallel, keep each one isolated in its own git worktree, and carry selected context from one agent session to another.