This is the GNU D compiler, which compiles D on platforms supported by the gcc compiler. It uses the gcc backend to generate optimized code.

The Mobile Robot Programming Toolkit (MRPT) is an extensive, cross-platform, and open source C++ library aimed to help robotics researchers to design and implement algorithms in the fields of Simultaneous Localization and Mapping (SLAM), computer vision, and motion planning (obstacle avoidance).

Lucene++ is an up to date C++ port of the popular Java Lucene library, a high-performance, full-featured text search engine.

Mapnik is an OpenSource C++ toolkit for developing GIS (Geographic Information Systems) applications. At the core is a C++ shared library providing algorithms/patterns for spatial data access and visualization.

Lazarus is an IDE to create (graphical and console) applications with Free Pascal, the (L)GPLed Pascal and Object Pascal compiler that runs on Windows, Linux, Mac OS X, FreeBSD and more.

GuerillaBackup is a backup solution for tailoring special purpose backup data flows, e.g. in rugged environments, with special legal constraints (privacy regulations, cross border data storage), need for integration of custom data processing, auditing or quality assurance code. It is kept small to ease code audits and does not attempt to duplicate features, stable and trusted high quality encryption, networking or storage solutions already provide. So for example it can be integrated with your choice of trusted transports (ssh, SSL, xmpp, etc.) to transfer backups to other nodes according to predefined or custom transfer policies. GuerillaBackup ensures security by encrypting data at source and only this key can be used to decrypt the data.