Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

Command-line program to download videos from YouTube.com and other video sites

Robust Speech Recognition via Large-Scale Weak Supervision

Python Fire is a library for automatically generating command line interfaces (CLIs) from absolutely any Python object.

HTTP Request & Response Service, written in Python + Flask.

Augmented Traffic Control: A tool to simulate network conditions

A testing system for catching visual regressions in Web applications.

Glue is a simple command line tool to generate CSS sprites

OctoTools: An agentic framework with extensible tools for complex reasoning

Detect the programming language of a source code

REDbot is lint for HTTP resources.

The API, BackOffice, Storefront, and Nebulizer for IndexTank

A Python module for the Geobuf compact geospatial format

"Selenium for Apps" (Test automate native or hybrid iOS apps with UIAutomation and Selenium WebDriver.)

phylogenetic study document storage used by Open Tree of Life