Open source products

HTTPie

Command line HTTP client, a user-friendly cURL alternative. The most popular Python project on GitHub.

CloudTunes

Music player for Dropbox and YouTube built with JavaScript, Backbone.js, Sass/Compass, Python, Tornado, Redis, MongoDB.

Cointrol

Bitcoin trading bot with a real-time dashboard implemented in Python, Tornado, CoffeeScript/JavaScript, Backbone.js.

GeoTagger

Geotag photos based on your smartphone location history data.

rrule.js

JavaScript support for recurrence rules for calendar dates as defined in the iCalendar RFC.

lastfmclient

Python client for Last.fm which also provides a non-blocking client for Tornado.