Antony Courtney

guppylm. A ~9M parameter LLM that talks like a small fish.

pi. AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI

get-shit-done. A light-weight and powerful meta-prompting, context engineering and spec-driven development system for Claude Code by TÂCHES.

Personal-Store. Stop cluttering your chat apps with self-messages. Seamlessly share information between your mobile and PC without the mess.

qmd. mini cli search engine for your docs, knowledge bases, meeting notes, whatever. Tracking current sota approaches while being all local

tweet-archive. Tools for exporting and analyzing tweets, built on top of bird CLI

ironduck. IronDuck: A pure Rust analytical database, DuckDB compatible

smaug. Archive your Twitter/X bookmarks to markdown with AI-powered analysis. Supports Claude Code and OpenCode for multi-model flexibility. Like a dragon hoarding treasure, Smaug collects the valuable things you bookmark.

jjui. jjui is a TUI designed for interacting with the Jujutsu version control system.

beads. Beads - A memory upgrade for your coding agent

react-grab. Copy any UI element for your agent

egg.c. EGGROLL in C, integer-first training

reverse-linear-sync-engine. A reverse engineering of Linear's sync engine. Endorsed by Linear CTO.

Dayflow. The automatic work journal/time tracker. Privately turns your screen into a timeline of what you actually accomplished. Open-source and local-first.

LLMs-from-scratch. Implement a ChatGPT-like LLM in PyTorch from scratch, step by step

embedding-atlas. Embedding Atlas is a tool that provides interactive visualizations for large embeddings. It allows you to visualize, cross-filter, and search embeddings and metadata.

djot. A light markup language

d2ts. Differential Dataflow in TypeScript

maybe. The personal finance app for everyone

cmdk. Fast, unstyled command menu React component.

contoso. Fictional dataset of sales transactions from the "Contoso" company

effect. Build production-ready applications in TypeScript

josh. Git at scale platform

scubaduck. Python

sql-flow. DuckDB for streaming data

linkwarden. ⚡️⚡️⚡️ Self-hosted collaborative bookmark manager to collect, read, annotate, and fully preserve what matters, all in one place.

the-book-of-secret-knowledge. A collection of inspiring lists, manuals, cheatsheets, blogs, hacks, one-liners, cli/web tools and more.

lmnr. Laminar - open-source observability platform purpose-built for AI agents. YC S24.

duckdb-ui. JavaScript

SingleFile. Web Extension for saving a faithful copy of a complete web page in a single HTML file

karakeep. A self-hostable bookmark-everything app (links, notes and images) with AI-based automatic tagging and full text search

awesome-shadcn-ui. A curated list of awesome things related to shadcn/ui.

simplegemm. Cuda

h3-duckdb. Bindings for H3 to DuckDB

JSONBench. JSONBench: a Benchmark For Data Analytics On JSON

TaxonomySynthesis. An AI-driven framework for synthesizing adaptive taxonomies, enabling automated data categorization and classification within dynamic hierarchical structures.

kysely-duckdb-async. kysely dialect for DuckDB, with async duckdb bindings

prettier-plugin-sql-cst. Prettier SQL plugin that uses sql-parser-cst

sql-parser-cst. Parses SQL into Concrete Syntax Tree (CST)

fast-grid. World's most performant DOM-based web table. Try it! fast-grid.vercel.app/

sqruff. Fast SQL formatter/linter

quak. a scalable data profiler

awesome-behavioral-interviews. Tips and resources to prepare for Behavioral interviews.

flexbox-reset. A CSS reset that uses the flexbox model by default

generative-ai-for-beginners. 21 Lessons, Get Started Building with Generative AI

duckdb-node. C++

act. Run your GitHub Actions locally 🚀

serverless-duckdb. An example of how to run DuckDB on AWS Lambda & API Gateway.

sqlsync. SQLSync is a collaborative offline-first wrapper around SQLite. It is designed to synchronize web application state between users, devices, and the edge.

northwind_test. Testing Malloy language on Northwind dataset

superjson. Safely serialize JavaScript expressions to a superset of JSON, which includes Dates, BigInts, and more.

tihku. Optimistic multi-version concurrency control (MVCC) for main memory databases, written in Rust.

ink. 🌈 React for interactive command-line apps

dashql. Unofficial SQL client for Hyper and Salesforce Data 360

typescript-book. The Concise TypeScript Book: A Concise Guide to Effective Development in TypeScript. Free and Open Source.

vulcan-sql. Data API Framework for AI Agents and Data Apps

harlequin. The SQL IDE for Your Terminal.

pivottable. Open-source Javascript Pivot Table (aka Pivot Grid, Pivot Chart, Cross-Tab) implementation with drag'n'drop.

graphic-walker. An open source alternative to Tableau. Embeddable visual analytic

duckdb. 🦆 fast duckdb bindings for bun runtime

queryscript. QueryScript is a strongly typed programming language that builds on SQL. It provides modern tooling, modularity, and integrations with popular relational databases. QueryScript is built for application business logic, transformations, ETL, and visualization.

nhost. The Open Source Firebase Alternative with GraphQL.

northwind-SQLite3. SQLite3 version of Microsoft's Northwind Database

typebox. JSON Schema Type Builder with Static Type Resolution for TypeScript

Front-End-Checklist. 🗂 The essential checklist for modern web development, for humans and AI agents

infinite-react. The modern React DataGrid for building apps — faster

lakeFS. lakeFS - Data version control for your data lake | Git for data

kubernetes-in-codespaces. Inner loop Kubernetes development using Codespaces

duckdb-postgres. C++

meadowrun. Meadowrun makes it easy to run your code on the cloud

companies-with-successful-pivot. List of startups/companies that had successful pivots

s3-benchmark. Measure Amazon S3's performance from any location.

magic-trace. magic-trace collects and displays high-resolution traces of what a process is doing

layout. Layout is a rust library and a tool that renders Graphviz dot files.

go-is-not-good. A curated list of articles complaining that go (golang) isn't good enough

star-history. The de facto GitHub star history graph.

react-arborist. The complete tree view component for React

prql. PRQL is a modern language for transforming data — a simple, powerful, pipelined SQL replacement

northwind_psql. Northwind sample database for postgres

spr. Submit pull requests for individual, amendable, rebaseable commits to GitHub

reassure. Performance testing companion for React and React Native

javascript. A JavaScript lezer grammar

crdt. CRDT Tutorial for Beginners (a digestible explanation with less math!)

data-diff. Compare tables within or across databases

sql-server-samples. Azure Data SQL Samples - Official Microsoft GitHub Repository containing code samples for SQL Server, Azure SQL, Azure Synapse, and Azure SQL Edge

macdylibbundler. Utility to ease bundling libraries into executables for OSX

cube. 📊 Cube Core is open-source semantic layer for AI, BI and embedded analytics

python-wasm. Build scripts and configuration for building CPython for Emscripten

Testing_BI_Engine. TPC-H_SF10

duckdb. DuckDB is an analytical in-process SQL database management system

github1s. One second to read GitHub code with VS Code.

graphql. RedwoodGraphQL

climbing-accidents. Analysis of 30 years of climbing accident reports

reactjs-interview-questions. List of top 500 ReactJS Interview Questions & Answers....Coding exercise questions are coming soon!!

frontend-interview-challenge. Robin Frontend Interview Challenge

dolt. Dolt – Git for Data

falcon. Free, open-source SQL client for Windows and Mac 🦅

athena-glue-quicksight-demo. Source code for the post, 'Getting Started with Data Analysis on AWS, using S3, Glue, Amazon Athena, and QuickSight'

runtypes. Runtime validation for static types

load-awesome. An awesome collection of — Pure CSS — Loaders and Spinners

SQL. BNF Grammars for SQL-92, SQL-99 and SQL-2003

1on1-questions. Mega list of 1 on 1 meeting questions compiled from a variety to sources

tab-view. Chrome extension for interactive, thumbnail overview of opened tabs

clang-wasm. How to build webassembly files with nothing other than standard Clang/llvm.

surfman. A cross-platform, low-level toolkit for GPU surface management

rust-gc. Simple tracing (mark and sweep) garbage collector for Rust

oxischeme. A Scheme implementation, in Rust.

react-redux. Official React bindings for Redux

ts-failable. Type safe error handling library for Typescript

react-animated-tree. 🌲Simple to use, configurable tree view with full support for drop-in animations

react-sortable-tree. Drag-and-drop sortable component for nested data and hierarchies

RustPython. A Python Interpreter written in Rust

design-for-developers. Design for Developers Workshop

revery. :zap: Native, high-performance, cross-platform desktop apps - built with Reason!

react-hooks-typescript-example. 🎣 Examples of using React Hooks with TypeScript

purescript-react-basic-hooks. An implementation of React hooks on top of purescript-react-basic

rust-simple-game-dev-tutorial. Rust game development tutorial with specs ECS and SDL2

TNG-Hooks. Provides React-inspired 'hooks' like useState(..) for stand-alone functions

react-widgets. Polished, feature rich, accessible form inputs built with React

swc. Rust-based platform for the Web

devhub. TweetDeck for GitHub - Filter Issues, Activities & Notifications - Web, Mobile & Desktop with 99% code sharing between them

ramjet. Morph DOM elements from one state to another with smooth animations and transitions

starlark-rust. Starlark (https://github.com/bazelbuild/starlark) in Rust

skylark-rs. Skylark parser written in Rust

ag-grid. The best JavaScript Data Table for building Enterprise Applications. Supports React / Angular / Vue / Plain JavaScript.

rawact. [POC] A babel plugin which compiles React.js components into native DOM instructions to eliminate the need for the react library at runtime.

skylark. Skylark in Go: the Skylark configuration language, implemented in Go [MOVED to go.starlark.net]

React-Fiber-Architecture. Understanding the structure of React Fiber( walk through and pseudo-code)

immer. Create the next immutable state by mutating the current one

glibc_version_header. Build portable Linux binaries without using an ancient distro

libreact. Collection of useful React components

text-gl. Text, rendered with OpenGL.

tabli. A Window and Tab Manager for Google Chrome

FASTER. Fast persistent recoverable log and key-value store + cache, in C# and C++.

floating-ui. A JavaScript library to position floating elements and create interactions for them.

StreamBench. Measuring the performance of popular streaming engines with Yahoo's Streaming Benchmark

dslabs. Distributed Systems Labs and Framework

react-ideal-image. 🖼️ An Almost Ideal React Image Component

wall. (mirror) A vector graphics renderer like NanoVG in OCaml

opencl-benchmark. Sample program to compare calculation performance between CPU and GPU

sled. the champagne of beta embedded databases

rough. Create graphics with a hand-drawn, sketchy, appearance

wired-elements. Collection of custom elements that appear hand drawn. Great for wireframes or a fun look.

FlameGraph. Stack trace visualizer

paying-the-piper. A project for discussing ways to fund open source development.

gatsby. React-based framework with performance, scalability, and security built in.

purecss-francine. HTML/CSS drawing in the style of an 18th-century oil painting. Hand-coded entirely in HTML & CSS.

nebulet. A proof-of-concept microkernel that implements a WebAssembly "usermode" that runs in Ring 0.

correctunwind. One part of my "this-is-why-we-cant-have-nice-thing" series

backtrace-rs. Backtraces in Rust

react-beautiful-dnd. Beautiful and accessible drag and drop for lists with React

mezzo. A Haskell library for typesafe music composition

tabby. A terminal for a more modern age

tutorials. a collection of minimal example programs

og-equity-compensation. Stock options, RSUs, taxes — read the latest edition: www.holloway.com/ec

perspective. A data visualization and analytics component, especially well-suited for large and/or streaming datasets.

Fauxbar. An alternative to Chrome's Omnibox.

parcel. The zero configuration build tool for the web. 📦🚀

forest-compiler. A multi-syntax functional programming language that compiles to WebAssembly.

git-flight-rules. Flight rules for git

pathfinder. A fast, practical GPU rasterizer for fonts and vector graphics

marlin-renderer. Marlin is the FAST Java2D antialiasing rasterizer derived from OpenJDK Pisces (shape)

skiaex. Skia PDF with Harfbuzz example

tgc. A Tiny Garbage Collector for C

binaryen. Optimizer and compiler/toolchain library for WebAssembly

wabt. The WebAssembly Binary Toolkit

code. Rust

full-scene-rasterizer. Full-scene rasterizer

golden-layout. A multi window layout manager for webapps

react-select. The Select Component for React.js

awesome-design-systems. 💅🏻 ⚒ A collection of awesome design systems

sqlnotebook. SQL Notebook — Casual data exploration in SQL

react-trello-board. Trello like board based on React, Redux, React-dnd

transit-js. Transit for JavaScript

SonosNPROneServer. NPR One Service for Sonos using the Sonos Music API (SMAPI)

micro-analytics-cli. Public analytics as a Node.js microservice. No sysadmin experience required! 📈

selda. A type-safe, high-level SQL library for Haskell

plotly.js. Open-source JavaScript charting library behind Plotly and Dash

react-ionize. A React renderer for building your entire Electron app

immutable-re. Immutable collections for the Reason programming language.

marp. The site of classic Markdown presentation writer app

blueprint. A React-based UI toolkit for the web

belle. Configurable React Components with great UX

flim-springfield. Analysis of The Simpsons

peloton. The Self-Driving Database Management System

recompose. A React utility belt for function components and higher-order components.

hydrogen. :atom: Run code interactively, inspect data, and plot. All the power of Jupyter kernels, inside your favorite text editor.

thegreatsuspender. A chrome extension for suspending all tabs to free up memory

awesome-macos-command-line. Use your macOS terminal shell to do awesome things.

electron-updater-example. A complete example showing how to use `electron-updater`

orb. Pivot table javascript library

flow-static-land. [DEPRECATED, please check out fp-ts] Implementation of common algebraic types in JavaScript + Flow

composition-kit. My hopelessly idiosyncratic music software

textql. Execute SQL against structured text like CSV or TSV

slickgrid-es6. SlickGrid fork rewrites for ES6 for use under npm and Babel / Rollup builds

csv-spectrum. A variety of CSV files to serve as an acid test for CSV parsing libraries

sqlite-parser. JavaScript implentation of SQLite 3 query parser

js-framework-benchmark. A comparison of the performance of a few popular javascript frameworks

rust-csv. A CSV parser for Rust, with Serde support.

audits. :rocket: Performance audits for the web: sites, webapps, JS frameworks and libraries.