CodexBar is a lightweight macOS menu-bar utility that displays real-time usage limits and token/credit balances across 25+ AI coding providers (Claude, Copilot, Cursor, Gemini, etc.) without requiring login. It's trending on GitHub due to solving genuine friction for AI-augmented developers who juggle multiple tool subscriptions.

One insight: No monetization path is evident (free utility), limiting wedge attractiveness despite strong technical execution and founder credibility — the opportunity is a paid alternative or upsell layer atop the core visibility function.