#debugging

OrcaReplay

A time-travel debugging tool for AI coding agents that records, replays offline, and forks agent runs to compare different LLMs on the exact same task.

Ponytail

A free plugin that trains your AI coding assistant to stop and check whether a feature actually needs new code before it writes any — like having a skeptical senior developer review every suggestion first.

Snifflab

Browser-based HAR file viewer that analyzes network traffic entirely client-side, with no upload and no account

Gage

Scans your Claude Code session history for hidden bugs, rule violations and problematic agent behavior

agents-workbook

A local proxy that lets Claude Code or Codex display their reasoning on a dashboard, so you can see what the model is actually deciding — and rejecting — while it works.

Selfship.ai

Surface and fix issues with your agentic applications 24x7

Manzanas

Orchestrates iOS simulator fleets on macOS, enabling multiple AI agents to simultaneously drive simulators without conflicts using TTL-bounded exclusive leases and warm pool management.

seedeep

A dashboard that shows you exactly what Claude Code is doing in real time — every file it touches, every subagent it spawns, and how much each step is costing you in tokens.

ModelMRI

A local-first debugging tool that visualizes what's happening inside an AI model — attention, features, and agent steps — without cloud infrastructure.

Hookwise

A developer tool that gives you an instant public URL to capture, inspect, and replay webhooks.

MCP State Twin

A testing framework that gives AI agents deterministic, forkable, stateful sandboxes — so you can run the same starting state through different tool-call sequences and compare results reproducibly.

Preloop

Runs your GitHub Actions workflow on your own laptop in an isolated, disposable virtual machine that boots in under 200 milliseconds — so you can see if a change actually passes CI in seconds, without pushing a commit and waiting for a runner.

Sonar

A free command-line tool that shows you exactly what's running on your computer's localhost ports and lets you kill it, replacing the usual mess of lsof, ss, and manually hunting for stuck processes. Not to be confused with the SonarQube code-quality prod

ProofShot

A tool that gives an AI coding assistant a pair of eyes: after it builds a feature, ProofShot opens a real browser, clicks through the feature, and hands you a video and screenshots proving it actually works.

Cline

An open-source AI assistant that lives inside your code editor and can actually make changes across multiple files, run terminal commands, and fix its own mistakes — you approve each step, so it acts more like a careful junior developer than an autocomple

Command Center

A workspace built for the new problem AI coding tools created: your AI assistant can write code faster than you can read it, so Command Center adds guided walkthroughs and diff explanations that help you actually understand and trust what got changed befo

WhatCable

A macOS menu bar app that tells you exactly what a USB-C cable can (and can't) do, and diagnoses why your Mac isn't charging or transferring data at full speed.

GitNexus

A tool that pre-reads your entire codebase and builds a map of how every file and function connects, so an AI coding assistant can find the right piece of code instantly instead of having to search through your whole project every time.

Archal

Testing environment that gives AI agents realistic, stateful clones of GitHub, Slack, Stripe and other SaaS tools so bugs get caught before production.

Thunder Client

Lightweight REST/WebSocket/gRPC API client built into VS Code and JetBrains — no app switching, local-first, git-syncable.