Via The Missing Docs .Net I found a very nice Slitherlink Puzzle Generator.
The program is called LoopDeLoop and is a generic implementation of Slitherlink (also known as LoopDeLoop and Kwontom) loops puzzle game. It has a multi player mode and support for non-standard grids (Square, Square Symmetric, Triangle, Hexagon, Pentagon and Octagon). You can also select the size you would like for your Slitherlink grid.
If you’re not familiar with Slitherlink puzzles please read “How To Solve Slitherlink Puzzles“. Happy Puzzling!