Side projects are awesome, help us learn and make us better at building stuff. Here's a collection of projects folks at PostHog have worked on.
jQuery-free client-side validation library for ASP.NET MVC
AI-powered factoid generator with voting, streaming, and payments
LLM-powered anomaly detection for time series data using LangGraph
Lightweight anomaly detection system with LLM-powered analysis
JavaScript library for authenticating with Auth0 in browser extensions
A DNS server where every IP address gets its own domain
Python script to scrape and analyze Brazil tech salary data from levels.fyi
A palm-sized developer toy with custom firmware for tinkering and learning
Operating system for single-function smart frames on Raspberry Pi
Google Drive as a native desktop app built with Electron
AI-powered CLI for generating daily standup summaries from GitHub activity
WordPress Classic Editor to Gutenberg block editor migration documentation
Full-featured PostHog demo app styled as a movie streaming platform
Open-source monitoring and management toolkit for ClickHouse clusters
Batteries Included State Management for React
Interactive CLI showcasing PostHog LLM analytics across 13+ AI providers
Terminal UI for managing AWS resources, inspired by lazygit and k9s
Self-hostable event analytics and push notifications via HTTP
Python package for retrieving Norwegian weather station observations
C# library for UK bank account modulus checking validation
Generate one-time login URLs for any WordPress user
Bus route visualization for Porto Alegre's public transportation
Manage PagerDuty on-call schedules from within your chat channels
ReactJS maps without external dependencies - lightweight alternative to Google Maps
AI-powered data visualization assistant for generating Plotly charts
AI-powered CLI for automating PostHog integrations in any project
VS Code extension showing PyPI package info on hover
Modern, responsive timeline component for React applications
Open-source browser extension to 10x Zapier's UX
GitHub PR & Issue AI assistant with intelligent summaries
Full-stack simulation of a ridesharing app with real-time visualization
Utility library to get the most out of ASP.NET Routing
Apple's SF Mono font patched with Powerline glyphs for terminal customization
Open-source Grammarly alternative - AI writing assistant Chrome extension
Real-time Git repository visualizer for presentations and learning
Publish your spreadsheets as beautiful interactive dashboards
Open-source RAG platform for building AI-powered knowledge applications
Self-hostable Loom alternative for screen recording and sharing
The Polish Discord bot with fun commands and utilities
Open platform for seamless management and collaboration
A super simple static site generator
UI for Terraform remote states similar to CloudFormation
WhatsApp MCP server for AI integration - search, read and send messages via Claude
An app for helping you write better by writing less
Airflow operators and hooks to run dbt as a first-class citizen
Subdomain helpers for the Django framework including URL routing
NPM package to convert Medium posts to Markdown format