Furnace Tracker for SFX??
Indie devs will often use SFXR (or it's forks) to generate chiptune sound effects for their games. It's great for everything percussive, but if you want something more tonal, melodic, or softer, I would actually suggest Furnace Tracker. The default chip (Sega Genesis) has perfect capabilities for generating chords, tones, and much more.
There's also a ton of other chips are available if you want, there's an entire category comprised almost completely of Yamaha FM chips, as well as sample/wavetable chips like the SNES/Amiga, synth chips like the C64 SID, and others like the NES (we don't talk about Pong).
If you know how to make an instrument and you know how to make a chord, you can make any melodic sound effect you want. I'm using it to make 'uncover' sound effects for my Easter-themed automation game, and they sound fantastic.
I might even make a tutorial for making SFX with Furnace, but who knows.
