Free solution software for linux

E/AS Automation Solutions is open source software system for help automate your solutions even for personal and/or corporate ones.
E/AS written on CLIP language (CA-Clipper dialect, compiler can be obtained from ITK.ru) and uses CODB (CLIP Object Database) as data storage.
Main features:
- client-server technology (both data and interface forms)
- component infrastructure with interaction between components by messages
- interface forms on XML
- MDI
E/AS contains in typical distribution:
- client software written on clip-ui library
- server software with wrapper for run as daemon
- maintenance tools: CODB console and component manager
- base (form, auth) and example (contact) components
Enhancements:
- completely rewrite code for implement E/AS architecture
- component infrastructure
- own server program instead COBRA
- maintenance tools: CODB console and component manager
- base and example components
- autoupdate views

Sudokut is a command line solver for Sudoku puzzles. When supplied with a Sudoku string or file, it returns all possible solutions.
Sudokut takes approximately half a second to solve a medium force Sudoku by using an efficient algorithm that is guaranteed to find all the solutions. It accepts many options that implement various features (validity check, diff, suggestions, and probing).
Enhancements:
- two new solving techniques are supported: naked triplets reduction, hidden triplets reduction
- new -u option to test the unicity of the solution
- new -m option to modify the string

Spin is a transparent threading solution for non-freezing Swing applications.
Every non trivial GUI sooner or later encounters the problem of "freeze".
This annoying behaviour is experienced by users every time the application performs extensive calculations or blocks for network or disk I/O.
Spin offers a new approach for solving this problem.
It offers transparent thread handling with minimal impact on your application code.
Enhancements:
- Now built with Maven.

Shoot is a solution to backup files on a single Unix-like machine and transport the files over the Internet through a secure channel to another Unix-like machine.
Enhancements:
- This release adds a new subsystem, sharing of functions between server and client, and many bugfixes and polishing.

Xokoban project is my (C++) sokoban game for X11.
Main features:
- Undos right back to your first move
- Go to any level - you dont have to play them in order
- recording of solutions. If you solve a level or find a better solution, the new solution will be remembered
- can show the solution for any level, if one has been found
- a demo mode which shows all solutions or levels
- a nice-looking game board with a configurable color scheme, 4 are included.

Asido is an image processing solution for programs written in PHP4 or PHP5. The project features "pluggable" drivers (adapters) for virtually any environment: either GD2, ImageMagick via shell, ImageMagick via the PHP extension, Magick Wand, or others.