7 Mac Apps Every API-Heavy Developer Needs in 2026

If you spend most of your day hitting endpoints, debugging webhooks, or wrangling LLM APIs, your tooling matters more than most people realize. A good setup disappears into your workflow. A bad one adds friction to every single request. Here are 7 Mac apps I rely on daily for API-heavy development — from debugging proxies to cost tracking to staying focused when you're three hours deep in a rate-limiting rabbit hole. 1. Proxyman — See Every Request Your App Makes Proxyman is the HTTP debugging proxy that finally feels native on macOS. It intercepts and displays all HTTP/HTTPS traffic from your apps, letting you inspect headers, payloads, and response times in a clean interface. If you've ever used Charles Proxy and wished it didn't look like it was built in 2008, Proxyman is the upgrade. The breakpoint feature lets you modify requests and responses on the fly, which is invaluable for testing edge cases without touching your code. Price: Free tier available, Pro from $69 2. Warp — A Ter