The game Pegs for the TI-83+ graphing calculator, ported to the browser.
The original Pegs was part of PuzzPack by Detached Solutions, and its main developer was Fred Coughlin. This port is by Rory O’Kane. It is open-source.
My Pegs in PuzzleScript game is another port of Pegs. Instead of reproducing all aspects of Pegs as exactly as possible, it adds color, sound effects, and an Undo Move feature.