Free serious software for linux

KCatalog project is an Multimedia catalog utility which allows you to organize huge collection of Movie/MP3 files in your hard disks,CDs,DVDs or any other media.
You can explore your multimedia collection easily and find the file you wish in just a few seconds. KCatalog provides extensive support to organize MP3 collection.
A very useful application for serious music lovers...
Main features:
- View MP3 information grouping it by albums, artists, genres, file location or your comments
- View movie information by file location or your comments
- Keep track of your Mp3/Movie CDs or DVDs by saving information like who borrowed it from you, notes regarding the CD/DVD etc
- Create and Manage M3U Playlists
- Sort your files by many different categories like artist, album, genre, title, file Location and your own comments.
- Facility to handle changes in drive letter or changes in Mount Location which is especially useful in linux platforms where the removable storage mount location may change or when you plug your harddisk in some other machine causing your drive letters to change
- Use your favourite application to play music or movie
- Catalog your MP3/Movie CDs, DVDs and other removable storage mediums based on the comments you give
- Efficient pattern matching to search for MP3 Files using file names, file location, ID3 tags (artist, album, genre, title) or your own comments.
- Search facility with advanced pattern matching options
- Database Backup/Recover Mechanism which ensures that your database will not be lost
- Supports both Linux and Windows platforms
- Pluggable Look & Feel
- And more over its Open source

Invasion 3D is a fun and addictive 3D arcade game!
The idea for Invasion 3D came during the summer of 2004, when I was working in New Jersey. I had been playing a lot of old arcade games on the MAME arcade emulator.
I had fun playing the original Taito Space Invaders game, but I was frustrated with the inability to shoot more than a single bullet at once with this game. I decided it would be fun to play a modern, 3-D version of Space Invaders with some serious weapons which would allow for massive alien destruction, as it should be.
At first I thought of using my Jax3D engine to render this game, but in the end I decided to learn something new and use OpenGL. I got started by looking at NeHes OpenGL Tutorials and wrote this game in my spare time during April and May of 2005.
Main features:
- Realistic physics simulation
- Challenging and fun gameplay
- Stunning visual effects
- Multiple weapons
- Massive Destruction
- Hidden bonuses
- 20 Waves with over 2,000 invaders
- Both Windows and Linux versions
- Free to Distribute to Anyone!

Project Lancelot is a modular mailing list manager.
Far simpler and less feature-rich than the likes of Mailman, it is still quite easy to understand, to change, and to extend.
Project Lancelot is a work in progress and should not (yet) be used for serious applications.
Enhancements:
- This release adds automated bounce processing via VERP.

Velosurf is a thin but efficient database mapping layer meant to be used with Jakarta Velocity.
Velosurfs goal is to generate a set of context variables that automatically map database tables and relationships without the need for any recompilation.
Enhancements:
- This is a corrective release that fixes a serious issue in $entity.insert along with a few minor bugs.
- It has some source refactoring and some new test cases.

MetaBoss is an integrated suite of tools for the design, development, and management of enterprise software systems through modelling.

MetaBoss project utilises OMGs Model Driven Architecture concepts and is primarily oriented at enterprises using Java based tools and technologies.

It encourages serious upfront analysis and design and aims to crystallise the value of it by automating a number of activities in the Software Development Life Cycle.

scanmem is a debugging utility used to isolate the position of a variable in an executing program.
The project is similar to pokefinders used to cheat at games.
Enhancements:
- Performance improvements and reduced scan time, including miscellaneous improvements to various commands.
- A dejagnu test suite was started and the build process was autotooled.
- One serious bug where misaligned variables could potentially be missed by scanmem was fixed along with multiple minor bugs.

OpenSSH LDAP Public Key patch provides an easy way of centralizing strong user authentication by using an LDAP server for retrieving public keys instead of ~/.ssh/authorized_keys.
It uses the standard core.schema/nis.schema and strongAuthenticationUser object class, which can simplify login centralization but could introduce serious security flaws if the LDAP server is not correctly configured.
Enhancements:
- A memory leak has been fixed.
- A potential LDAP filter injection if a username has strange characters in it [()*] has been fixed.