I presume you mean no clone Amigas?
1. Commodore didn't licence the chipset.
Here's a partial list of companies that have a license to some part of the Amiga at least:
Cloanto
CU Amiga in 1993
PC Intern in 1999
Amiga Plus and PC Magazine in 2000
Epic Marketing
Runesoft GmbH
Village Tronic Marketing GmbH for "Amiga OS 3.1"
Hyperion Entertainment VOF
Escom AG
MS MacroSystem Computer GmbH --> MacroSystem Digital Video AG
Tianjin Family Multimedia Co.
Newstar Electronic Corporation
Rightiming Electronics Corporation
Regent Electronics Corp.
Lotus Pacific Inc.
Actual machines... I think there are more but here are a few I remember...
There was the Access:
Draco's as someone mentioned.
The Chinese Wonder TV A6000 and A6060
