Tripcode decoders

Why are they all single core?  Why are they all in Japanese?  Is it really hard to write multi-threaded apps?

fork()! fork() is the standard!

Fucking threading. Tripcode explorers don't need a shared address space because the various instances don't need to communicate, and if you're using one process per core there's no additional overhead compared to threading once the processes have been created.
Using multiple processes instead of multiple threads also has the advantage that you can distribute it over several machines instead of just your shitty dualcore desktop.