Tons of clones out there. I had a list on my desktop, so here are a few makers doing various clones or modified versions.
Stomp Under Foot
Skreddy Pedals
Basic Audio
B.Y.O.C.
Big Tone Music Brewery
Wren & Cuff
Pete Cornish
Black Arts Toneworks
Blackout Effectors
Earthbound Audio
Earthquaker Devices
Ronsound
Costalab
TopTone
Tym Guitars
Electronic Orange
Barber
MJM
Euthymia
Skullytone FX
Jam Pedals
Catalinbread
Mojo Hand
Way Huge
Dwarfcraft Devices
Montgomery Appliances
VFE Pedals
Frederic Effects
BMF Effects
Baja Tech Custom
Pro Tone Pedals