CocoaHTTPServer

Links:
https://github.com/robbiehanson/CocoaHTTPServer
http://cocoawithlove.com/2009/07/simple-extensible-http-server-in-cocoa.html

OpenMobster - Open Source Mobile Enterprise Backend

Link: https://code.google.com/p/openmobster/
Intro:

• OpenMobster, is an open source Enterprise Backend for Mobile Apps, or 
• OpenMobster, is an open source Mobile Backend As a Service that can be deployed privately (on-premise) within your Enterprise or
• OpenMobster, is an open source MEAP (Mobile Enterprise Application Platform).

Open-source implementation of Boostexter

Link: http://code.google.com/p/icsiboost/

Intro: Boosting is a meta-learning approach that aims at combining an ensemble of weak classifiers to form a strong classifier. Adaptive Boosting (Adaboost) is a greedy search for a linear combination of classifiers by overweighting the examples that are misclassified by each classifier. icsiboost implements Adaboost over stumps (one-level decision trees) on discrete and continuous attributes (words and real values)