Free great tool software for linux

Restart Firefox is an extension which adds a restart Firefox menuitem.

Adds Restart Firefox menuitem to File, and a toolbar button for easy restarting.

Great for when you install themes or extensions and need to restart Firefox.

Sudoku Tool is a sudoku game that helps you to solve sudoku puzzles. Sudoku Tool can generate puzzles randomly or puzzles can be entered manually.

Some of the features include random puzzle generation, pencil marks, and the ability to save games.

Manual Setup:

The game starts in initialization mode. In this mode, you are setting up the a puzzle that you got from a newspaper, online, ... You are manually setting up the puzzle.

To select a location, click a square with the left mouse button and type in the number you want to place 1-9, or 0 or space to remove a value you placed there previously. You can also change other values by simply typing a new number.

When you have the puzzle set up the way you want, click the Start Game button to start playing.

Random Game:

To have a game randomly generated for you, click the Setup New Game button. A new window pops up asking you to select either "Manual" or "Random". Select "random" and a new game will appear.

To build, use:

make -f Makefile.[system]

Tyrant project is a roguelike game.
Tyrant is a game of heroic adventure, where you pit your wits and cunning against a fearsome array of monsters and fiendish puzzle in your attempt to gain fame and fortune.
Tyrant is a Roguelike Game in the tradition of many other great games such as the original Rogue, Nethack, Angband and ADOM.
These games emphasize addictive gameplay and randomly generated universes to create an immersive and imaginative game that looks deceptively simple yet contains a great deal of detail and strategic depth.
Enhancements:
- Fixed nasty portal bug
- Fixed duplicate hero bug
- Potions with spell effects
- Minor engine improvements
- Item protection in bags

Really Rather Good Battles In Space is a real time strategy game with fleets of spaceships.
Single player real time strategy game following the fall of the great Argonian empire.
Main features:
- a short but relatively polished single player campaign
- pretty (albeit 2d) graphics
- spaceships
- explosions

NetworkSlime project is a network version of the popular and addictive Slime Volleyball.

Two slimes battle it out in an electronic game of volleyball. This game is great fun and can be played in an office, on a campus, or over the Internet.

The game uses a client/server archictecture and is written in Java. It is deployed using Java Web Start, which means that you can just click on the link to start the client or server.

Xjigmgr project is a jigsaw puzzle game front-end.

Xjigmgr is a GUI frontend to xjig, a great jigsaw puzzle game by Helmut Hoenig. With xjigmgr the puzzle can now be played by kids, and not only by Unix geeks.