Free to run software for linux

TrollBooth is email filtering and administration software intended to run on a dedicated FreeBSD email filtering server. Web-based administration tools allow easy and secure management of the most-commonly-used features.
The whitelist adviser makes delivery assurance simple for non-technical users. Automatic installation and minimal additional configuration are major project goals.
TrollBooth uses the best features of Postfix, SpamAssassin, and Clam AntiVirus, and centralizes or automates configuration and control.
Enhancements:
- The reports section of the Web interface has been enhanced.

xrick is a clone of Rick Dangerous, known to run on Linux, Windows, BeOs, Amiga, QNX...

Rick Dangerous is the Indiana Jones of computer games, running away from rolling rocks, avoiding traps, from South America to a futuristic missile base via Egypt and the Schwarzendumpf castle.

bnrt is 2 programs, a client and a server, that help render frames of animations over a network using multiple computers that all have Blender, a popular opensource 3D modeler/renderer, on them.

bnrt can run on Linux, Windows, and any other environment supported by both Java and Blender. Currently it is only set up to run on Linux and Windows, since those are the OSs I have running and active at the moment. But it is pretty trivial for me to add more OSs as long as they are supported by both Java and Blender.

To use bnrt you need to run the server on each system that you want to render frames on. This is done by either running the server shellscript or batch file. Or you can even just type in java -jar bnrtServer.jar at the command line.

After you have started a server on each system, then you need to run the client, which does not do any rendering. You can run a server and a client on the same machine. To run the client you need to run the following command from a command line:

java -jar bnrtClient.jar {file to render.blend} {first frame} {last frame} {server1} {server2} {server3....}

Please note that at the moment this is still pretty alpha code. I use it on my own network with up to 5 machines, mixed Windows and Linux as well as various processors, and it works quite well for me. YMMV, but if you run into a problem I will be happy to try to help you out as much as possible.

j2Bin is a software that helps Java developers distribute their Java programs (.jars) as Linux executables, making the programs easy to run and use for the end user.
Note: This is the very first release, even so we invite everyone to try it and send feedback.
Enhancements:
- added english translation
- added portuguese-portugal translation

spConfig is a C library made for parsing configuration files with a syntax similar to XML.
spConfig is a configuration file parsing library intended to allow one to add configuration file functionality to an application with relative ease. Configuration files use an XML-like syntax with some additional preprocessor-style commands.
Installation:
unpack the archive, cd to spconfig-0.1.3
./configure
make
make install
After installation, youll need to run ldconfig before you start linking to it. You probably need to be root to run it.
Enhancements:
- new build system
- [else] directive
- bugfixes

sapplay is a console player based on libSap.

About libSAP:

libSap is a Linux port of windows SAP Library. SAP Library is a software emulation of CPU 6502 microprocessor and Pokey chip.

Those two chips are used in Atari XL/XE computers. SAP Library is used to to run programs written in 6502 machine language, programs that are using Pokey chip to play tunes and sounds.