Bombs Away! - Small variations on minesweeper to make the game more friendly. Free DOS game.
Cupid's Cove Heart Sweeper - a variation of minesweeper with hearts, plus a cute valentine message when you win or lose
Dynamite Minesweeper (Dynamine) - A more continuous variation on minesweeper. Free Windows 3.1 implementation.
Hall of the Minesweeper - Introduction to the game and basic strategies, and links to several implementations.
Hex Minesweeper - Variation on a hexagonal grid. Windows 95 shareware.
How the Minesweeper Solver Works - Description of basic algorithms for solving minesweeper, and an implementation that interacts with the Windows game.
InetMines
Jack Welsby's Minesweeper Page - A few basic tips, small rule variations, and cheats.
Java Minesweeper - quick Java demo of the Minesweeper game. No frills as yet, but pretty nifty, small, and quick.
JavaSweeper
Lady Di's mines - Java Minesweeper dedicated to Diana Spencer, Princess of Wales and her campaign to ban landmines. Includes high scores.
Mad Mines
Minesweeper - shareware game for windows. Score equals number of mouse clicks, not the time. Save and load options, and more.
Minesweeper Central - Includes "new" world records for times on expert level.
Minesweeper Strategy and Cheats - Some basic strategy and a couple of cheats.
Minesweeper Tips, by Brian Chu - Many tips for fast and effective human play.
Minesweeper with JavaScript
Minesweeper World Records
Programmer's Minesweeper - Java applet for testing computer strategies for playing minesweeper.
Richard Kaye's Minesweeper Page - Papers about the computational complexity of Minesweeper, namely that the usual game is NP-complete and that an infinite variation is Turing-complete.
Speedbump - A minesweeper-like game where you avoid obstacles (instead of bombs) while trying to deliver pizzas. Compete against other players for prizes too.
The Authoritative Minesweeper - World records at all 3 levels, a few tips and cheats, and many links to software and related pages.
The Minesweeper Home Page - Brief description of a book about strategy, an interesting conjecture about probabilities, and an implementation OPENsweeper for Windows.
The Minesweeper Page - Comprehensive tutorial on human strategies, both deductive and probabilistic.
Umberto Marzo's JavaMines
WebSweeper
Yet Another Minesweep - with images, a clock, and 3 levels; Optimized for speed. Sources, too!