Interface overview

Three-column window, which top-level area to use, and detached windows

Purpose

The main window follows Finder / Mail: pick a scope on the left, scan the list in the middle, inspect the selection on the right.

Learn the three columns before tags and AI, and you will spend less time wondering where you are.

┌────────────┬─────────────────────┬──────────────────────┐
│  Sidebar   │  List + toolbar     │  Detail panel        │
│            │  Repo / Activity    │  README · notes      │
└────────────┴─────────────────────┴──────────────────────┘

Full main window: Manage expanded, All Stars in the middle, README on the right

Screenshot TODO · images/screenshots/main-interface/three-columns.webp

Column	Job	Docs
Left	Switch Manage / Explore / Activity, then a subcategory	Sidebar
Center	Repos or notifications for the current category; page toolbar on top	Repository list, Toolbar
Right	README, tags, notes, Health, AI for the selection	Repository detail

When the window narrows, the detail column may collapse so the list stays usable. That is adaptive layout, not a bug.

Three top-level areas

Area	Job
Manage	What you already have: Stars, My Projects, knowledge base, tags, collections, Release timeline, Insights
Explore	What is not in your library yet: Trending, Weekly, Awesome, Hot, New releases
Activity	GitHub notification inbox by default, plus announcements, Release, and other local feeds

Daily triage lives in Manage. Rankings live in Explore. Mentions and reviews live in Activity.

Detached windows

When you need README beside a long chat, or cross-repo Q&A, pull the tool out of the main window:

Window	How to open	Docs
Repo AI	Detach the overlay, or ⇧⌘A	AI chat
RAG workspace	Toolbar or ⇧⌘K	RAG workspace
Agent workspace	Dedicated entry	Agent (Beta)

Appearance

Settings → General: 18 UI languages, Light / Dark / System, font scale, list density, reduce motion. See General settings.

Notes

• Manage lists are your Stars / projects. Explore lists come from Starcat discovery services, not a mirror of local Stars.
• Activity opens on Notifications, not “everything”. See Activity.

Related

• Quickstart
• My Projects
• Insights
• Desktop widgets