Chinese company KBDFans produces a huge range of mechanical keyboards and accessories, and currently carries the largest stock of HHKB-compatible keycaps.
All of KBDFans' keycap sets are made from PBT.
Blank D&G Red and Grey
Blank D&G Orange and Grey
Blank 3 Keycap set
Blank WASD/Arrow set
Dyesub (Printed) Sets
KBDFans X BIIP Extended 2048
KBDFans X BIIP Extended 2048 Stealth
KBDFans PBT HiPro
This set is KBDFans' take on the popular 9009 colorway, originally based on a vintage Cherry keycap set, using a similar font to classic doubleshot Cherry/GMK keycaps.
The set is primarily white with grey modifiers, plus accent modifiers and spacebars in pink and green.
KBDFans also produced an add-on set for the HHKB JP series, among other addons not pictured here.
Russian Keycaps Red and Grey
EC Alphas (Pixel font)
This set was available in a range of colors with a distinctive pixelated font. Only the alpha cluster was included in this set (including the , . / keys).