There's actually three different jailbreaks that were available on launch day. Really quite amazing. I believe i0n1c was first. chpwn/phoenixdev also released one, which appears to rely on having a developer account.
Judging from their twitter flows it seems MuscleNerd was first, followed by i0n1c and lastly chpwn and phoenixdev. I'm just glad I won't have to be without SBSettings for too long :)
There's actually three different jailbreaks that were available on launch day. Really quite amazing. I believe i0n1c was first. chpwn/phoenixdev also released one, which appears to rely on having a developer account.