Starcat

Starcat is a native macOS app that turns a user's starred GitHub repositories into a searchable, local first knowledge base. It is open source and requires macOS 15 or later, with the current release shipped as an Apple Silicon direct download. The app indexes repository names, descriptions, topics and notes with a local full text index, and combines language, tag and status filters with saved query presets. Smart Collections group stars into built in views such as Needs Review, Unmaintained, High Value, No Tags and Recently Active, and custom rules can use metadata, notes, status and Health signals. AI features read each README to write a structured summary of what the project does and what stack it uses, suggest tags with confidence scores from preset taxonomies, translate content, and answer questions in a chat grounded in citations. Further tools cover release tracking with notifications, repository health, OpenSSF security scoring, a code graph and shareable cards. AI is bring your own key: the user connects their own accounts with multiple model providers, and data stays under the user's control on the Mac. It is aimed at developers with thousands of stars who can no longer find or remember why they saved a repository. Pricing is published. A free download is available, and Pro is offered at $3.99 per month, $29.99 per year or a $39.99 one time lifetime purchase. Each Pro license covers up to two Macs the user personally uses.