CouShell is a real-time collaborative workspace that replaces the patchwork of tools teams rely on. Rich documents, boards, maps, calls — all synced offline-first via CRDT.
Built on Abracadabra — a high-performance CRDT sync engine.
Warning
v1.0.1 is the first public release. Expect rough edges and known issues — feedback and bug reports are welcome.
| Document | Rich text — tables, tasks, code blocks, embeds |
| Kanban | Drag-and-drop boards with columns and cards |
| Table | Collaborative spreadsheets with custom fields |
| Outline | Hierarchical outline, keyboard-first |
| Timeline | Gantt-style project tracking |
| Calendar | Events with month / week / day views |
| Map | Shared world map with markers and icons |
| Desktop | Spatial canvas — arrange docs as widgets |
| Call | Live audio / video with screen sharing |
- Offline-first — work without a connection, changes merge when you're back
- Zero conflicts — Y.js CRDT guarantees automatic merge correctness
- Passwordless — Passkey / WebAuthn login, guest soft-keys, invite codes
- Nested workspaces — infinite page trees, drag-and-drop, real-time sync
- Extensible — runtime plugin system, no rebuild required
- Native — desktop app via Tauri with system notifications and local storage
1. Download & install for your platform
2. Launch CouShell → connect to your Abracadabra instance
3. Authenticate with a Passkey, soft-key, or invite code
4. Start collaborating
CouShell is part of the Abracadabra ecosystem.