axiak

filternet

A proxy library that provides easy hooks to manipulate http and https traffic consistently.

java_posix_spawn

Use JNI to implement process spawning without fork()

jquery-shiftclick

Easily add shift-click behavior a la gmail to your page

scala-css-parser

Simple css parser in scala using combinator parsing

jinja-static

static site compilation with asset management /w jinja2

underscore

JavaScript's utility _ belt

celery

Distributed Task Queue (development branch)

cssurlrewriter

dropwizard-guice

Adds support for Guice in Yammer's DropWizard damn simple library for building production-ready RESTful web services.

emacs_config

jquery-pjax

pushState + ajax = pjax

messenger

Alerts for the 21st century #hubspot-open-source

shotwell

wedding-website

airfares

EWAHBoolArray

A compressed bitmap class in C++.

fake-hbase

A faked htable implementation for testing of HBase applications

folly

An open-source C++ library developed and used at Facebook.

googletest

Github fork of google test (https://code.google.com/p/googletest/)

honcho

Honcho: a python clone of Foreman. For managing Procfile-based applications.

Hystrix

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex distributed systems where failure is inevitable.

js-yaml

CommonJS YAML Parser -- fast, elegant and tiny yaml parser for javascript

json2pb

Python/C++ implementation of JSON to/from Protobuf convertor

leveldb

Clone of http://code.google.com/p/leveldb/

mailgunner

node

evented I/O for v8 javascript

pjson

Like python -mjson.tool but with moar colors (and less conf)

rocksdb

A library that provides an embeddable, persistent key-value store for fast storage.

storm-mesos

Run Storm on top of the Mesos cluster resource manager

TerminaIMdB

A command-line interface for the IMdB