From the listing below it is obvious that the Apple II was easy to clone and was a thriving industry back in the day. It is no wonder that Steve Jobs became so protective and obsessive of Apple products.
2001 IIe
3CI R.O.B.O.T
ACC 8000
Accona II
Agat 9
Agatha
Akihabara Japple
Albert
Aloha 50
Alpine 2
AM-64e
Ananas
Apco (4 different models)
Apcom
Apollo II
Apple Cortland IIgs
Arrow 1000
Arrow 2000
AVT Comp 2
Banana
Base 48
Base 64a
Basis 108
Basis 108 portable
Basis 208 / 216 (not an Apple II clone)
Bell and Howell II+
Blaupunkt II
Boss 1
Boston IV
Cab 65
Cal 400 (Basis 108 clone)
CHE-1
Cherry II
Circle 100
Circle 200
Circle IIe
Citron II
Clone II
Cordata WPC Bridge (PC and Apple II clone)
Cosmo SPS-109
Creative Labs Cubic99
CSC Euro 1000
CSC Euro Plus
CSC Euro Profi (a.k.a. IBC Euro Profi)
CSC Euro Super
CV 777
Cyborg Isaac 91a
Data-Mini... see Trident
Decider
Dick Smith Cat
Dimension 68000
Dipa 109 -(name based upon the Basis 108)
Dipa 209 -(name based upon the Basis 208)
DWK
Elite : This clone looks like an IBM PC
From the front, this Apple II+ clone looks like an IBM PC. Without knowing much about this clone, one can look at it, and assume that it was produced AFTER the IBM PC had achieved a high level of popularity (1982-83.) The company who produced the Elite probably wanted to make their computer sell better by using a case that looked like an IBM PC. Or, it's possible that computer cases like this one were simply cheaper and more easily available than empty Apple II clone cases.
Esselte 1000
Eurocon II
Eurocon II+
Fox 640
Fox 2001
Fox Pro IIe
Franklin Ace 100
Franklin Ace 1000
Franklin Ace 1000 Plus
Franklin Ace 1100
Franklin Ace 1200
Franklin Ace 2000
Franklin Ace 2100
Franklin Ace 2200
Franklin Ace 500
Franklin Ace CX
Franklin Ace PC 8000 (not a clone)
Franklin Ace Red Lightning
Gentek
Glemm II
Golden II
Hacker IIe
IMCE Junior
IMCE Miracle
Intertek System IV
ITT 2020
Ivel Ultra (Model 1)
Ivel Ultra (Model 2)
Ivel Ultra Z3 (IIe)
Jabbal
Joining Instruments (JM-3006)
Katson II
Lasar II
Laser 128
Laser 128 (newer model)
Laser 128ex
Laser 128ex2
Laser 3000
Lazer II
Lemon II
Lemon IIe
Lingo (Basis 108 clone)
Linotype Paul APL-100
Mackintosh (came before the Macintosh)
Malum II
Medfly (Basis 108 clone)
Mico-1 Prototype
Micro II
Micro SCI Havac
Microcom IIe
Micro Vonputer II
Micro Vonputer II+
Micro-Craft Dimension 68000
Mimic Spartan
Mitac (Little Intelligent Computer)
Multi-Mac MT-600
Multitech MPF-II
Multitech MPF-II CCG (Chinese)
Multitech MPF-III
-Multitech MPF-III (2)
Noxxon 101
Operand
Orange
Orange+
Orange 2
Orange Peel
Orion II
OS-21
OS-22
Panda 64
Peach II
Peach Executive IV
Peanut
Peelings II -(possibly the Orange Peel?)
Pearcom
Pi II
Pineapple
Pineapple 6400
Pinecom 6400 (rebadged Pineapple 6400)
Prawetz 8c
Prawetz 8m
Prawetz IMKO-1
Precision Echo Phase-II (Basis 108 clone)
Qcal
Ready Go
Recom II
Redstone 462a
Redstone TR-005e
Retzl
RX-8800
Seagull -(It might be a Velebit Galeb computer)
Sekon
Siemens PC 1000 (licensed, never produced)
Sidney II (manual only)
Siprel PK 6400
Space 83
Space 84
Space II
Suitcase II
Susy II -(by Chinaproducts, advertised in MC Microcomputer 1983-84 in Italy)
Syscom II
Tashki OM-8064
TC-80a
Tektronix II
Teo Tiger 2000
Tiger Learning Computer
TMS Vela
Trident
Triton
TST II
Vectorio 64
Velebit Orao (Eagle) (Is this an Apple II clone?)
Victoria
Weic
West PC 800
William Tell (supposedly shown in Creative Computing, but it remains unconfirmed)
Wombat
Zema Twin
Zeus-2001
Zuckerman (rebadged Franklin ACE 500)
Brazilian Apple II Clones:
Appletronics Thor 2010
CPA
Absolutus
Polaris
ENIAC II
Franklin Franklin
Houston AP
Magnex DMII
Maxitronica
Maxitronic I
-MX-2001
-MX-48
-MX-64
Microcraft
-Craft IIe
Milmar II plus (early model)
Milmar II plus (late model)
Milmar Laser IIc
Milmar Master
Milmar Senior
Milmar TN-1
Polymax
-Polly Plus
Suporte Venus II
Sycomig SIC I
Victor do Brasil
-Ellpa Jr.
The Vtech Laser 128 was an Apple2c clone sold by Sears in Canada. Vtech was only company that Apple was unable to take legal action against. The Laser ROM was sufficiently different from the Apple code that it could not be proven to be a direct copy.