Meep is a free finite-difference time-domain (FDTD) simulation software package to model electromagnetic systems. It supports distributed-memory parallel simulations, nonlinear, anisotropic, and dispersive media, PML absorbing boundaries, and 1D/2D/3D and cylindrical problems. It is completely scriptable from either C++ or a Scheme (GNU Guile) interface.
Crabgrass is social networking, group collaboration, and network organizing Web application. It consists of a solid suite of group collaboration tools such as private wikis, task lists, a file repository, and decision making tools. Work is currently being done on a large user interface overhaul, better social networking tools, blogs, and event calendars, as well as better support for collaboration and decision making among independent groups.
Dragora is a trustworthy GNU/Linux-Libre distribution based on the concept of simplicity with the goal of being a multi-purpose operating system. Dragora respects the freedom of the user with the values of Free Software and provides control to those who use it. It is developed entirely by volunteers and it is published under the terms of the GNU General Public License.
The HOTP Toolkit package contains tools that are useful when deploying the one-time password HOTP technology. It contains a shared library, a command-line tool to generate and validate one-time passwords, and a PAM module (pam_hotp) to make system login or SSH use HOTP one-time passwords for authentication.
Loomes' Nested Set is a class that can be used to manage a tree of information stored in a database. It can perform several types of operations to manipulate a hierarchy of nodes that are stored in a database as table records. Currently, it can insert a root node, insert a node that is child of a given parent, delete a branch of nodes under a given node, delete a single node, rename a node, move nodes, check whether the root node exists, and retrieve the whole tree of nodes.
The GNU Modula-2 compiler is one of a number of front end languages to GCC (the GNU Compiler Collection). As such, it has been designed to coexist with other GCC languages. For example, it can be used in mixed language projects and it can catch C++ exceptions and throw exceptions which can be caught by C++. Users can also exploit conditional compilation and full gcc backend optimization and architecture coverage. GNU Modula-2 can produce position independent code and can easily produce shared libraries from modules. The compiler provides a swig interface file generator option, which allows scripting languages such as Python to import modules written in Modula-2 and also catch exceptions thrown by Modula-2. The compiler translates PIM2, PIM3, PIM4, and ISO dialects of Modula-2.
MeeGo is a Linux-based mobile and embedded operating system. It brings together the Moblin project, headed up by Intel, and Maemo, by Nokia, into a single open source activity. MeeGo currently targets platforms such as netbooks and entry-level desktops, handheld computing and communications devices, in-vehicle infotainment devices, connected TVs, and media phones. All of these platforms have common user requirements in communications, application, and Internet services in a portable or small form factor. The MeeGo project will continue to expand platform support as new features are incorporated and new form factors emerge in the market.
GNU Mach is the microkernel upon which a GNU Hurd system is based. It provides an Inter Process Communication (IPC) mechanism which the Hurd uses to define interfaces for implementing in a distributed multi-server fashion the services a traditional operating system kernel provides. Mach is particularly well-suited for SMP and network cluster techniques. Thread support is provided at the kernel level, and the kernel itself takes advantage of that. Network transparency at the IPC level makes resources of the system available across machine boundaries.