Free purposes software for linux

actiTIME project is a Web-based standalone time tracking system that is streamlined for billing and management purposes. You can keep track of the time worked for your customers and projects.
Several configurable reports allow you to analyze the collected time expenses in different ways and get comprehensive and clean data for time management purposes. It integrates with QuickBooks accounting software.
Main features:
- Time expenses are recorded on by-customer and by-project basis
- Overtime and undertime calculations and reports
- Co-workers can share information using daily task comments
- Support of billable and non-billable task statuses
- Explicit reports for billing and management purposes
- Individual access rights management
- Entering/Modifying the time-track of other users
- Integration with Intuit QuickBooks
- Data export in the CSV format
- Access to the system through a web browser
- Support of different database platforms
- Runs under most operational systems
- Free of charge
Enhancements:
- The ability to rename hierarchy levels was added: Customer, Project, Task.
- Performance was improved and a memory leak on the server related to user session data was fixed.
- There were more than 30 small fixes and improvements.

Foundational Physics project is a 2D physics engine written in Java for entertainment and educational purposes.

With a robust groundwork, its aim is to provide an easy interface for programmers to easily and creatively manipulate a Newtonian physics environment.

CTris its mainly a tetris clone made by me for educational purposes, you can try to
have a look at the code but unfortunately its terribly messy and with few comments.

If you want to compile it from the sources you will need the DUMB libraries.

PHPBibMan is a Web-based literature database for scientific purposes. It is fully compatible with BibTex and offer comfortable exchange of references for scientists.
Main features:
- multiple users with different access rights
- localisation
- "Carts"
- BibTex import and export
- meta data like: abstracts, notes, library, topical classification file attachments
- access rules

xDVDShrink facilitates creation of a fair-use copy of a DVD for archival purposes.

xDVDShrink is a BASH and PERL-Gtk based utility that makes use of readily available Linux tools to create a copy of a DVD.

Single titles or episodic DVDs are supported. Only a single audio and subtitle stream are supported for each title.

GNOME Mastermind is a Mastermind clone for GNOME Desktop.

GNOME Mastermind is a simple mastermind-like game that ive written mainly for fun and with learning purposes in spare time. Now it became quite stable and i decided to distribute it. Try it and give me some feedback.

openGiggle is an open protocol for delivering giggles over a network.

The giggle protocol has been developed after literally man-minutes of discussion and coding.

This protocol is an extension of current yet limited internet standards for the purposes of distributed giggling.

The giggle package includes the server, client, and instructions.

Cryptomak Cipher Tools project consists of a collection of PHP scripts for encryption purposes.
Cryptomak contains a cipher and tools for encryption utilities written in PHP, including substitution, vigenere, affine, transposition, and index of coincidence.
It is powered by the Phrame platform which implements MVC design and the Smarty template engine.
Enhancements:
- It is programmed in modular programming. Welcome to OOP world ;)
- Using Phrame as web aplication platform which implements MVC design
- Using Smarty as template engine at the view layer
- New hashing script added
- Better web design