Host Adapters

Adaptec
High performance I/O, connectivity, and network products are incorporated into the systems and products of major computer and peripheral manufacturers.
http://www.adaptec.com/

Ami Trix Development
SCSI-TV: a SCSI interface for the Amiga A570 and CDTV. Frequently Asked Questions
http://www.amitrix.com/scsi-tv-faq.html

Apcon
Manufactures products that add functionality to SCSI bus computer systems. Recently introduced High Availability solutions for Windows NT, UNIX, OS/2, and Netware environments which protect network servers from expensive downtime.
http://www.apcon.com

Atto Technology
Powerful, cross-platform storage solutions across the entire data continuum that encompass: host adapters including ATTO ExpressPCI with Advanced Data Streaming (ADS) technology, ATTO AccelWare and ExpressRAID software.
http://www.attotech.com/

Digital Interfaces Ltd
Fibre Channel bridges, SCSI tape interfaces and SAN connectivity and storage products.
http://www.digitalinterfacesltd.com

Initio
Manufactures input/output solutions for the microcomputer industry, including SCSI host adapters and software.
http://www.initio.com/

Pacific Data
SCSI host adapters and tape media.
http://www.pacificdata.com/