Free romance of the three kingdoms software for linux

Danger from the deep (aka dangerdeep) is a Free / Open Source World War II german submarine simulation.
It is currently available for Linux/i386 and Windows, but since it uses SDL/OpenGL it should be portable to other operating systems or platforms. (If anyone whishes to port it, please contact us.)
This game is planned as tactical simulation and will be as realistic as our time and knowledge of physics allows. Its current state is ALPHA, but it is playable.
If anyone wants to contribute in development, youre welcome, just email the dangerdeep-devel mailing list. Contributing binary packages for various Linux distributions would also be much appreciated.
To get help with the game you should visit our public forum.
The game has support for multiple languages but currently only English, Italian and German are implemented. It is written in C++ with the use of the STL.
Danger from the Deep is released under the GNU General Public License. The project is hosted on SourceForge, a great supporter of the Open Source community.
Main features:
- simple main menu
- user interface (some items missing)
- basic world simulation, night and day
- realistic water and cloud simulation
- one type of destroyer, one battleship, one aircraft carrier, three subs, eight civilian ship types
- steering, firing, diving, periscope use
- free look engine for testing, periscope, UZO (aiming binoculars), bridge view
- console for logging purposes
- basic physics (acceleration, steering, firing)
- basic destroyer AI (follow, throw depth charges)
- simple vehicle preview
- mission parsing via text files, you can create your own custom missions
- tonnage recording
- log book

Block Attack - Raise of the Blocks is another block fall game based on Tetris Attack.

Block Attack - Raise of the Blocks is a block fall game. Like Tetris Attack and Crack Attack, block are raising from the floor and the player must clear them before they touch the roof.

Blocks are cleared by making a line of three blocks in the same color horizontally or vertically, and blocks can only be changed horizontally.

The goal is to either get as much points as possible, get as much point in two minutes, clear all blocks in limited moves and clear a number of lines.

Two player slit screen is available. Two players can compete in Time Trial (who gets most points in two minutes) or Vs. mode where clearing more than 3 blocks trows blocks at the opponent.

Postfix SMTP Monitoring Solution is a set of three Perl CGI scripts used to monitor the SMTP queue, allowing the deletion of messages that for one reason or another become "stuck" in the queue.

I needed a web-based solution to monitor my Postfix SMTP relay, which enabled me to remove messages that become "stuck" in the queue. I wrote three simple Perl scripts, and used Sudo to give me the desired functionality.

I am uploading these scripts in case they are useful to others. Assuming you have Apache configured correctly on your Postfix server, it should be as easy as placing the three .cgi files into your webservers cgi-bin directory, and making the appropriate modifications to your /etc/sudoers file (see the README contained in the tarball).

Parallel Three-Dimensional Fast Fourier Transforms, dubbed P3DFFT, is a library for computational computing in a wide range of sciences, such as physics, climatology, chemistry.
This project was developed at SDSC by Dmitry Pekurovsky as a product of a Strategic Applications Collaborations (SAC) project.
Main features:
- Parallel implementation with 2D data decomposition, overcoming an important limitation to scalability of other 3D FFT libraries implementing 1D, or slab, decomposition.
- Optimized for parallel communication and single-CPU performance.
- Built on top of well-optimized and flexible 1D FFT libraries.
Enhancements:
- Assorted minor bugfixes and code speedups.

mod_auth_shadow is an Apache module for authentication using /etc/shadow.

When performing this task one encounters one fundamental difficulty: The /etc/shadow file is supposed to be read/writeable only by root. However, the webserver is supposed to run under a non-root user, such as "nobody".

mod_auth_shadow addresses this difficulty by opening a pipe to an suid root program, validate, which does the actual validation. When there is a failure, validate writes an error message to the system log, and waits three seconds before exiting.

Mod Random provides three services. The first service is redirection: you feed it URLs and it will redirect to random URLs that you have loaded.

The second is providing environment variables that can be used for implementing ad banner systems. The third is displaying entire pages of random HTML, using its own custom handlers in combination with with random ads and quotes that you feed into the system.

It can also supply text via an environment variable called RANDOM_QUOTE, RANDOM_AD, or by environment variables that you specify. This can be used to implement fortune cookies, message of the day, entire random pages, or banner ads.

Concentration is a colorful memory game for Linux.

Concentration is the classic memory game brought back to life for Linux. You can play in windowed or full screen mode.

Choose from three different icon sets to play with and choose from three different board sizes.

You have you choice of small (2x2), medium (4x4), and large (6x6) boards to choose from. All though mainly intended for kids the adults will have lots of fun "testing" this game out for them. Play in a window or in full screen by toggling between the two with the f key.