(There's no video for Crozzle yet. Please contribute to MR and add a video now!)
Crozzle is a crosswords puzzle design tool that lets you build crosswords. Crozzle also has support for drag and drop to copy/move portions of the grid around, which facilitates the design. You can also mark spots as black squares.
Crozzle.sit (26.75 KiB / 27.39 KB)
Crozzle v0.8 / compressed w/ Stuffit
Mac OS 1.x - Mac OS 6.x
Note: It crashes upon launch on System 7 and up. Works great under Mac OS 6.0.8 in Mini vMac.
Emulating this? It should run fine under: Mini vMac