How they compare
Both let you watch public shows for free and pay for private ones.
Xtease uses tokens for tips and private shows, with girls, guys, couples and trans performers from Colombia, Romania, Ukraine, Vietnam, the US and elsewhere. It doesn't say who operates it.
Camster, from the same group as Flirt4Free, has girls, guys and trans performers in HD, scheduled and voyeur shows, and 120 free credits for new members. It showed a few hundred models online when we checked.