Virtual filesystem overlay built on event streams for state replay and time travel

Diffs for function call stacks across git commits. 22 languages supported (AST-based, built using Tree-sitter). Great for agentic review.

Sentry instrumentation skill for system-behavior tracking

Mario 64 as a library for use in external game engines

A collection of Agent Skills by Cali Castle.

A low-latency guitar effects studio with an AI-assisted pedalboard.

Local-first engine for browser and Node replicas built on Effect v4, Automerge, SQLite, and Effect RPC

A text marking & annotation engine for presenting source code on the web.

Cuelume is a curated sound palette, not an audio engine. It gives buttons, links, toggles, and completed actions clear feedback without asking developers to design sounds themselves. Add an attribu…

otel-desktop-viewer is a CLI tool for receiving OpenTelemetry traces while working on your local machine.

PostgreSQL, MySQL and MS SQL database schema migration tool using plain SQL and JS files

Skills for Designers and Engineers.

access to david ondrej's personal agent skills

Toolkit for building native desktop apps

Offline, privacy-first grammar checker. Fast, open-source, Rust-powered

📝 A markup-aware linter for prose built with speed and extensibility in mind.

Bonk is a code & docs agent that can build, review and triage for you, built on Cloudflare Workers & OpenCode.

An agentic skills framework & software development methodology that works.

Type-safe, real-time backend framework on your own Cloudflare account — Workers, Durable Objects, D1, R2, Queues. Convex-style DX, Vite-first.

Guardrails for Drizzle ORM: enforce tenant isolation, soft deletes, and explicit escape hatches without changing how you query.

A generic framework for on-demand, incrementalized computation. Inspired by adapton, glimmer, and rustc's query system.

dev tools, env vars, task runner

Free skills from the Hyperagent team

Use your most capable model to audit your codebase and write plans for cheaper models to execute.

Compile Zod schemas into zero-overhead validation functions at build time. Works with Vite, webpack, esbuild, Rollup, etc