Analytical Sudoku
Analytical Sudoku assists you in solving Sudoku-type games by methodically eliminating the unavailable numbers, thus uncluttering the field to allow you to think about really solving the puzzle. It is very easy to use and comes with full instructions, and three demo puzzles.
http://www.analyticalsudoku.com/downloads/AnalyticalSudokufree.exe - 567Kb - Download - Screenshot

Ichiban Sudoku
Ichiban Sudoku is the "A Number 1" sudoku program, bringing the worldwide puzzle sensation to life on your home computer. With four levels of infinite puzzle creation, the fun never ends. Create, Print, Solve or Hint - Ichiban Sudoku has it all. Marking and solving the squares is a thing of... You can play against the clock while you rock to the oriental hip hop soundtrack, it's all part of the engrossing experience that is - Ichiban Sudoku.
http://www.vellosoft.com/ichiban/ichiban.exe - 10Mb - Download - Screenshot

SudoKoach
SudoKoach makes solving Sudoku puzzles more fun. It does the tedious work for you, so you can concentrate directly on finding the solution. SudoKoach generates puzzles with six different levels of difficulty, so you don't have to wait for tomorrow's newspaper to start solving. ... These explanations help you learn the more advanced Sudoku solving strategies, so you can become a better player! ... Instead, you can immediately get to the fun part of solving Sudoku puzzles: looking for the relationships among cells that indicate solutions.
ftp://KMRConsulting.com/sudokoach/sudokoach.zip - 1Mb - Download - Screenshot

My SUDOKU
Sudoku logic-based puzzles have been a huge success. Many magazines offer their readers sudoku puzzles. The rules of sudoku are very simple but the completion of the puzzle may take even few hours. The computer program My SUDOKU, designed in SudokuPolska. ... My SUDOKU may also solve the puzzle on the Users request. ... You can also take part in numerous sudoku competitions, since the program shall certainly find the proper solution. ... com, enables building exciting sudoku puzzles of several difficulty levels.
http://www.sudokupolska.com/Setupmysudoku.exe - 2Mb - Download - Screenshot

Sudoku Quest
Sudoku Quest. The brain bendingly addictive new puzzle game that has taken the world by storm. Choose from four levels of difficulty that will cater for beginners as well as Sudoku masters. There are hints for players who need help solving a board, and a range of elemental themes for those who... Sudoku Quest can generate an endless stream of unique Sudoku boards that will keep you hooked for hours. ... So if you like addictive puzzle games that need skill and logic to complete, then Sudoku Quest is for you.
http://www.su-doku.net/downloads/sudoku_quest.exe - 2Mb - Download - Screenshot

Sudoku Assistenten
Sudoku Assistenten was created by sudoku enthusiasts, for sudoku enthusiasts, and its sole aim is to offer anything and everything a sudokucrazy person would want in a sudokuprogram, for free! It will both let you copy/paste any sudoku you can find into the program as well as typing it in... The list of features also includes an accurate rating of any sudoku, the possibility to export and print sudokuboards, and a unique "analytical mode" that will provide you with a new perspective into the world of sudoku.
http://www.sudoku.frihost.net/download/download.php?file=4 - 2Mb - Download - Screenshot

Sudoku Studio
Sudoku Studio provides a convenient environment for working Sudoku puzzles. It lets you enter your own puzzles available in newspapers, books, and magazines or puzzles you create yourself. It can also generate new puzzles at several levels of difficulty. ... Sudoku Studio can solve any Sudoku puzzle. ... You can print, save, and reload puzzles you like. ... Need help? ... Then you can race against time or your friends to solve puzzles and achieve a high score.
http://sudokustudio.com/sdksto13.exe - 1Mb - Download - Screenshot

Just Sudoku
Play Sudoku on your PC without using pen and paper - Just Sudoku 1. 0 is a free game with lots of different puzzles to solve. The sudoku puzzles are divided into five different levels of difficulty. The aim of sudoku is to enter the digits from 1 to 9 in a grid with 81 cells without repeating... Just Sudoku 1. ... A simple game - but unbelievable addictive! ... 0 is absolutely free, has an easy to use point-and-click interface and can easily be installed and uninstalled.
http://www.sudoku-puzzles.net/setup.exe - 1Mb - Download - Screenshot

Sudoku Mate
Sudoku Mate generates an unlimited number of suduko puzzles for beginners and experts. 50 different levels of difficulty to choose from. Create and edit your own sudoku puzzles and store them in a database file for later use. Solve sudoku puzzles manually or with the solver. ... Print out sudoku puzzles or copy them to the clipboard. ... Easy to use number pad for entering and editing numbers.
http://www.bettinggenius.com/download/SudokuMate10Trial.exe - 2Mb - Download - Screenshot

Sudoku Ace
Sudoku Ace is new puzzle software based on Sudoku - a Japanese numbers game initially introduced in 1986. The Sudoku-mania really took the world over this year. For example, one of the major British newspapers The Telegraph, which started publishing the Sudoku puzzles in February, has received... Another handy option is the program's Solve feature, which allows users to find a solution for even the most difficult Sudoku puzzles. ... And, because Sudoku Ace is based on a proprietary algorithm, the quantity of different layout is practically endless.
http://www.sudokuace.com/download/sudokuace.exe - 1Mb - Download - Screenshot