Clojure reducers, but for parallel execution: locally and on distributed systems.

Caffe: a fast open framework for deep learning.

📨 IMAP/SMTP sync system with modern APIs

Please visit https://github.com/h2oai/h2o-3 for latest H2O

Luigi is a Python module that helps you build complex pipelines of batch jobs. It handles dependency resolution, workflow management, visualization etc. It also comes with Hadoop support built in.

Free and Open Source, Distributed, RESTful Search Engine

Distributed Task Queue (development branch)

Open source RabbitMQ: core server and tier 1 (built-in) plugins

The Libre Multilingual Analyzer, a Natural Language Processing (NLP) C++ toolkit.

Evernote SDK for Python

Instagram loves pie

Modular search for Django

LocationTech Spatial4j: A Geospatial Library for Java

Python interface to Solr

The MongoDB Database