The "picmi" program is by far superior for nonograms (though a couple of its builtin puzzles are unfortunately ambiguous), though it still doesn't support color

The "picmi" program is by far superior for nonograms (though a couple of its builtin puzzles are unfortunately ambiguous), though it still doesn't support color like most proprietary implementations do. It's easy to create and add an XML puzzle collection if you have a directory of black-and-white images (though images not specifically designed to be nonograms are likely to be ambiguous). Actually, this generalizes: SGT's puzzle implementations are never as good as a dedicated program; their value is in their bulk and relative uniformity (though that is not very complete; half the programs don't support possibilities (and none support multiple flavors of possibility or global usage tracking; see e.g. any halfway-decent Sudoku program) and several require keyboard or require mouse where others don't). I'm also irritated that there isn't a command-line interface to automated generation/rendering/solving at least (I wouldn't want to play most of them in a terminal).