Before you begin, read this:
UTAU (with our world-famous Talking Pals™ and other great voicebanks like Teto, Bebo's arch nemesis)
Synthesizer V Studio Basic (Has a funny British lady and, like, five other characters- WAIT THEY PUT BEBO'S ARCH NEMESIS IN THIS?????????)
Microsoft Talk It (Piru voice origin, was changed to Kit from DecTalk since DecTalk has WAV export... well, for the version we have)
Uberduck (dead, rip.....) (Imagine giving homestar's voice to the default cat model in 3dmm, while stealing Homestar's voice in the process!)
Anvil Studio (no pitchbend features, but we can do that in UTAU...)
Online Sequencer (this is a website, and it makes quieter files. We do not use this, but it'd be good to recommend to people who prefer something web-based)