A while ago someone asked for a way to count at 100+MHz. I mentioned that I had made a counter with serial output using a MAX3000A series CPLD.
I have been playing with a prototype of it now for a few weeks, and it seems to work, so I wrote it up so other people can use it in their frequency counter projects:
Now if someone would like to contribute a 200+MHz analog frontend, I may finish off the project with a controller + LCD display. :)