CLucene is a C++ port of Lucene: the high-performance, full-featured text search engine written in Java. CLucene is faster than lucene as it is written in C++.
Picolena is a lightweight ferret-powered documents search engine written in Ruby on rails: 1) Just let Ferret index any directory you want. 2) Enter queries on your browser to get corresponding documents in a few milliseconds.
NeuronDotNet is a neural network engine written in C#. It provides an interface for advanced AI programmers to design various types of artificial neural networks and use them.
OGRE (Object-Oriented Graphics Rendering Engine) is a scene-oriented, flexible 3D engine written in C designed to make it easier and more intuitive for developers to produce applications utilising hardware-accelerated 3D graphics.
Spiral is an event-driven networking engine written in C++ and licensed under the MIT license. It is a port of the Twisted Matrix python library.
It aims to be source compatible, Twisted source code should be easy to adapt to C++.
RealGeni(RSS) is a Fully Automated Real Estate Aggregator Search Engine written in php and utilizing Google Maps to display info markers on the map, search fields Location,(30.000) and Search ZIPS,(43.000) with Ajax Auto Suggest feature and...
The widget aim is trying to reduce the bounce rate of your blog and provide the visitor a better navigation experience.
When a visitor lands on your site from a search engine result page, he is in need of a certain information / service...
Gel2D is a free/open-source, cross-platform, object-oriented, 2-dimensional game engine written in C++. It aims to be an all-in-one solution for commercial-quality rapid game development.
Zal is an event stream processing (ESP/CEP) engine written in C#. Zal processes high throughput streams of events or data using Sql-like language. It is more or less a port of Esper CEP/ESP from java to C#. CEP stands for complex event processing.
The first 3D game engine built in C# for .NET, predecessor to the Visual3D Game Engine (http://www.visual3d.net/game-engine), an All-in-One Game Development Tool for Next-Gen 3D Games, MMOs, Simulations and Virtual Worlds powered by Microsoft XNA.
Zeleste Engine would be an engine written in C++ for create 2D-based games.
NVelocity is a template engine written in C# for .Net that is a port of the popular Java project Velocity (http://jakarta.apache.org/velocity).
An Open Source Game Engine Written in C# and DirectX SDK
Bluedoc is a Tool for generating documentation in HTML format from doc comments in source code in C and C++. Like Javadoc.
Blitz templates is a fast template engine written in C and compiled as a PHP module. It started as a php_templates replacement, but developed into much more. It is based on extensible template controllers (PHP) and weakly-active templates (HTML).
Linderdaum Engine is an open source purely object-oriented 3D gaming engine written in C++. It is designed to be an integrated solution for the development of interactive 3D applications, for game, industrial and scientific visualization.
Open Source Symbian Game Engine written in C++.
The Lambda-Engine is a cross platform game engine written in C++. It simplifies core tasks, such as rendering/graphics, sound, physics, math, scene and resource management.
It is still *far* from finished, but I am working on it :)
A modular, cross-platform game engine written in C++ . The main goal is to provide a flexible system for easy prototyping.