Font texture builder looks useful, if I find the time to... uh... do anything that I might need it for.
For my CS420 Computer Graphics snakes and ladders game, I was going for a kind of arcade-ish look, so I swiped images of Nintendo text from Seanbaby. I processed them into bitmaps with--like--Paint and IrfanView, and Perled (or something) the resulting images into C arrays in my source code. This is known colloquially as the hard way.
(I think I might've actually done it manually, but I'm either remembering the state machine for CS301 Systems Engineering (how OSes load machine language programs etc) I built by hand with arrays (when everyone else skipped that step and used flex), or suppressing the memory.)