DKM Sudoku Online: Play online puzzles at one of four difficulty levels. Also includes a solver program and hints. Software for Pocket PC and Windows also available.
Erational Sudoku Helper: Flash application to assist in solving puzzles by using basic scanning techniques. Download and source code available.
Microride Su Doku Puzzler: Microsoft .NET application for creating and playing puzzles of various difficulty levels. Also acts as a helper.
SadMan Software: Offers shareware program that can use multiple techniques, with an emphasis on humanistic methods. Detailed explanation and illustration of basic and advanced solving techniques. Also download and purchase information.
Simple Sudoku: Freeware puzzle creator for Windows.
Su Doku Master: Sudoku puzzle generator and solver software for Mac OS X.
Sudogo.com: Offers puzzles in PDF and mySQL formats for solving offline or building into custom applications. Also offers online puzzles with three difficulty levels and customizable look-and-feel. [Dutch/English]
Sudoko Solver by Logic: JavaScript-based solver which attempts to complete grids by logic. Includes step-by-step description as well as suggesting a single move. Offers challenge to find new logical methods for "unsolvable" puzzles.
Sudoku Companion: Sudoku puzzle generator for Mac OS X.
SuDoKu Cracker by J. Pedersen: JavaScript based solver.
Sudoku Dragon: Shareware puzzle solver. Generate and solve puzzles, print out the grid for solving by hand, tips and tutorials with online discussion forums. [Windows XP/2000/Me/98]
Sudoku Java Solver Applet by Klaas: Java-based brute force solver. Displays animation of solution. Solves pre-defined puzzle or allows the user to enter his or her own puzzles.
Sudoku Mobile: Mobile phone Sudoku game software.
Sudoku Sensei: Open source application which describes the logic used to solve a grid, rather than using a simple brute force solution. Includes source code and samples. [Windows 95/98/NT/2000/XP, Linux]
Sudoku Solver: A free utility to solve and email Sudoku puzzles.
Sudoku Solver: .NET solving program. Either offers hints or solves entire puzzle.
Sudoku Solver in Three Lines - Explained: Small bit of perl code that will generate a sudoku puzzle solution.
Sudoku-Help: Excel-based shareware helper application.
SudokuME: Open source Sudoku game for any Java enabled phone. Includes downloads, a game manual and user forums.
Super Doku: Sudoku game available for Motorola V400.