Guyker has several modern Vibrato Solutions currently on the market for headless guitars, these include (but are not limited to)...

WT002	The WT002 is Guyker's clone of the Hipshot-style 2 point headless Tremolo. It seems to me, looking at this unit, it works like a 2-point Stratocaster tremolo unit designed for a headless guitar (man, if ZZ Top had this in 1983 for their two Fenders they cut the headstocks off of...it'd be rad). I have no experience with this trem system but from what I can tell by looking at it, it likely strings up from the ball ends, and the string itself is pulled taught through the headpiece, and then clamped down by one of the allen screws. Tuning is then done Steinberger style using the thumbwheels behind the string to be tuned, and it pulls back on a saddle assembly (again, like Steinberger), to tighten the string to pitch.
W1002	This was either and earlier version of the W1003 without the locking feature, or something entirely different. The tuner mechanism is not apparent behind the bridge at all, and I'm not quite sure how the strings attach. It works like the W1003 though, which is functionally similar to a Steinberger Trans-Trem minus the whole "transposing feature" (aka. STeinberger S-Trem I believe, or T-Trem?).
W1003	This is the unit I bought for my Ataricaster project. It comes in both this matte-chrome and a black version (I have the black one). It works like a steinberger Trans-Trem (except the whole transposing thing) in that the bridge saddles are free floating, and locked in place with a side set screw, strings ride over rollers on the saddles into the tailpiece which pivots on 2 ball bearings (Differences, on a Trans-Trem, they are offset, on a W1003, they are symmetrial). There are six individual "tuners" at the tailpiece where the string is installed through the headpiece in reverse, clamped like a Floyd Rose at the nut end, and then cut shorter at the plain end of the string and wrapped around a tiny capstan wheel INSIDE the tuner behind the bridge assembly.
W1004
W1016