CostGoat

CostGoat, made by Functioncraft (also creators of Redis GUI Client and SSH GUI Client), is a desktop application that monitors costs across AI APIs, cloud services, and SaaS subscriptions in real time, alerting users to prevent surprise bills and running out of credits. It offers AI agent quota tracking with live countdowns for tools like Claude Code, Codex, Kimi, and Z.ai, cloud usage monitoring with per-service cost breakdowns, and API credit balance monitoring across services. CostGoat includes subscription management with renewal tracking, desktop and email alerts, and more than 50 real-time integrations spanning Claude, AWS, ChatGPT, GitHub, and Cloudflare. It follows a local-first privacy model using OS-native encryption, with new integrations shipping every week. Pricing is freemium: a 7-day free trial requires no credit card, Solo Yearly is $9/month ($108 annually), a limited-time Solo Lifetime is $199 one-time, and Team Yearly is $79/month ($948 annually), with bundle options alongside other Functioncraft tools.