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Harness-native GUI

Blackcrab

A native Claude Code workspace with searchable local history, up to six live panels, worktree-aware grids, diffs, terminal, and preview.

Status
Active
License
Apache-2.0
Source access
Open source
Record checked

At a glance

Claude Code users who want several local sessions visible together with transcript inspection, Git context, usage reporting, and verification tools.

Good choice if

Claude Code users who want several local sessions visible together with transcript inspection, Git context, usage reporting, and verification tools.

Check before choosing

The project calls itself early and macOS-first even though official downloads cover three desktop platforms; mobile remote work is still described as an unfinished companion path.

Workflow fit

Existing evidence gates classify four predefined workflows. Bands are non-numeric and do not rank product quality.

  • One agent + review

    Strong fit

    Stay close to one coding session and inspect changes in a dedicated visual surface.

    Current sources document visual review, workspace isolation.
  • Parallel local tasks

    Strong fit

    Run several coding tasks on one machine without their branches or files colliding.

    Current sources document parallel sessions, workspace isolation, visual review.
  • Remote control

    Conditional fit

    Start or revisit coding work away from the machine where the repository is running.

    The product may fit, but current sources do not establish remote execution or access.
  • Shared team workspace

    Conditional fit

    Let teammates enter the same live workspace to watch, steer, preview, or review work.

    The product may fit, but current sources do not establish remote execution or access, shared team access.

Harness coverage

Blackcrab wraps the locally installed Claude Code CLI and indexes its saved sessions. It does not establish support for another harness.

1 named integration
  • Claude Code

Workflow mechanisms

Unknown means the current first-party record does not establish the mechanism; it is not converted into evidence of absence.

3 of 5 documented
  • parallel sessions

    Documented

    The tileable grid can run and retain up to six live Claude Code panels with separate subprocess and UI state.

  • workspace isolation

    Documented

    New grid panels can use Claude Code worktree mode so parallel work receives a separate checkout.

  • visual review

    Documented

    Structured transcripts render diffs and the workspace keeps a terminal and native preview beside the task.

  • remote execution or access

    Not established

    The pinned repository contains an experimental mobile-remote path, but its own product record says the companion is not yet connected to a host.

  • shared team access

    Not established

    Current first-party sources do not establish teammates sharing one live Blackcrab workspace.

Technical and public context

Implementation inspection and source-native activity provide investigation context. Neither changes workflow fit.

Inspect implementation record and public activityContext, not workflow fit

Public activity signals

Daily source snapshots provide ecosystem context only. They do not affect workflow fit or capability claims.

2 mapped sources

Implementation record

Inspected at commit 6ab00e0a286e.

  • The native process boundary launches and resumes locally installed Claude Code sessions.
  • The desktop grid implements multiple live panels, worktree-aware state, terminal, preview, and structured transcript views.
  • The mobile-remote document describes an experimental companion path and explicitly records incomplete host connectivity.
Inspected paths
  • README.md
  • src/App.tsx
  • src/LivePanel.tsx
  • src-tauri/src/lib.rs
  • docs/mobile-remote.md

The audit establishes mechanisms in an early, macOS-first codebase; it does not establish cross-platform reliability or a production-ready remote path.

First-party evidence

Sources establish specific current GUI claims; their count does not add fit points.

3 first-party sourcesGUI record checked