Gonzo

Gonzo is a free, open source terminal interface for analyzing logs in real time, built by ControlTheory and inspired by the Kubernetes tool k9s. Developers pipe in any log stream, from files, standard input, the network, OTLP, CloudWatch or Loki, and see live charts, heatmaps, pattern detection and AI powered insights without leaving the terminal. It detects JSON, logfmt and plain text automatically, supports custom formats through YAML, and tracks severity by color. It is aimed at developers who debug code that AI assistants helped write and want to investigate failures while they are still happening. The dashboard uses a two by two grid with vim style and mouse navigation, a fullscreen log viewer and more than eleven themes. Filtering works on streaming logs, and the tool can read output from platforms such as Vercel, Supabase, Railway, Render, Netlify, Fly.io, Cloudflare and Kubernetes. Pressing a key opens the same investigation in Dstl8.lite, a local browser dashboard included with Gonzo. Gonzo is MIT licensed and free, and Dstl8.lite needs no account. It connects to ControlTheory's paid Dstl8 platform, which is priced separately. Dstl8 Pro is $50 per month for individual developers and includes 5 sources with a bring your own model setup. Dstl8 Scale is $250 per month with 10 sources, up to 15 users and 30 days of retention. Enterprise pricing is custom. Dstl8 trials run 14 days with no card required.