Fun hardware discovery of the day: so Atmel has their ATF15xx CPLD family, and this chip is compatible enough with Altera's MAX 7000 series to the point where Atmel has a tool, POF2JED, that can convert Altera bitstreams without recompiling.
I always assumed that this came about via some kind of licensing or second-sourcing agreement, but then I decided to actually take a look at the strings in the POF2JED binary.
It turns out that the POF2JED binary has some secret debugging capability (that cannot be turned on by default) that dumps Altera POF files into a human-readable form.