Below are all known companies offering storage subsystems with SSDs only.

We don't include firms manufacturing hybrid units with SSDs and/or HDDs, only purposed-built flash arrays.

All of them are headquartered in USA but Fuitsu in Japan, Huawei in China, Innodisk in Taiwan, Boston Limited in UK, Syneto in Italy, and EUROstor in Germany. The first one historically was probably SeaChange International for a media server.

Some storage names are missing but they will be obliged to enter into this new technology able to answer to the speed needed by critical applications (database, HPC, big data analysis, etc.)

Aberdeen (USA)
Arkologic (USA)
American Megatrends (USA)
Astute Networks (USA)
Avalanche Technology (USA)
Boston Limited (UK)
CacheIO (USA)
Cisco/WhipTail Technologies (USA)
CloudByte (USA)
Dell (USA)
EchoStream Innovative Solutions (USA)
EMC/XtremIO (USA)
Enmotus (USA)
EUROstor (Germany)
Fujitsu (Japan)
GreenBytes (USA)
Hewlett-Packard (USA)
Hitachi Data Systems (USA)
HGST/WD (USA)
Huawei Tehnologies (China)
IBM/Texas Memory Systems (USA)
IceWEB (USA)
Infortrend Technology (Taiwan)
Innodisk (Taiwan)
iXsystems (USA)
JBOD Storage Solutions (USA)
JDV Solutions (USA)
Kaminario (USA)
Lucid Technology (USA)
NetApp (USA)
NexGen Storage (USA)
Nimbus Data Systems (USA)
Nutanix (USA)
One Stop Systems (USA)
Oracle (USA)
Pure Storage (USA)
Scalable Informatics (USA)
SeaChange International (USA)
Silicon Graphics International/Starboard Storage Systems (USA)
Skyera (USA)
Solid Access (USA)
SolidFire (USA)
StorageQuest (USA)
Syneto (Italy)
Tegile Systems (USA)
Tintri (USA)
Violin Memory/GridIron Systems (USA)
Virident Systems (USA)