- GWI.net
- GXA Network Solutions
- GXS
- Gypsy (software)
- gzip
- H-136 Line Printer
- H-144 Open Reel Magnetic Tape Unit
- H-1562 Key Punch
- H-1564 Key Punch with Printing
- H-1592 Verifier
- H-333 Line Printer
- H-6254 Continuous-Form Page Printer
- H-6255 Continuous-Form Page Printer
- H-6257 Continuous-Form Page Printer
- H-6273 Continuous Paper Printer
- H-6274 Continuous Paper Printer
- H-6281 Cut-Sheet Page Printer
- H-6283 Cut-Sheet Page Printer
- H-6284 Cut-Sheet Page Printer
- H-6286 Cut Paper Printer
- H-6485-1 Magnetic Tape Cartridge Unit
- H-6486-1 Cartridge-Based Magnetic Tape Unit
- H-6488-1 Cartridge-Based Magnetic Tape Unit
- H-6495 Cartridge-Based Magnetic Tape Unit
- H-6585 Magnetic Disk Unit
- H-6586-K Magnetic Disk Unit
- H-6587 Magnetic Disk Unit
- H-6591
- H-6593 Disk Array Unit
- H-6595
- H-65A1 Disk Array Unit
- H-6951-1 Magnetic Tape Cartridge Library System
- H-6952-1Cartridge-Based Magnetic Tape Libraries
- H-6954-1Cartridge-Based Magnetic Tape Libraries
- H-8172 Continuous Paper Printer
- H-8174 Cut Paper Printer
- H-8195 Cut Paper Printer
- H-8232 Reader
- H-8238 Card Reader
- H-8239 Card Reader/Punch
- H-8277-11/12 Line Printer
- H-8285 Card Printer/Punch
- H-8287 Card Reader
- H-8298 Card Reader
- H-8299 Card Punch
- H-8445 Open Reel Magnetic Tape Unit
- H-8453 Open Reel Magnetic Tape Unit
- H-8455 Open Reel Magnetic Tape Unit
- H-8468-1 Open Reel Magnetic Tape Unit
- H-8487-A10 Open Reel Magnetic Tape Unit
- H-8488-1 Open Reel Magnetic Tape Unit
- H-8488-A10 Open Reel Magnetic Tape Unit
- H-8523 High-Capacity Memory System
- H-8564 Magnetic Disk Drive
- H-8566 Magnetic Drum Unit
- H-8567 Magnetic Drum Unit
- H-8575 Magnetic Drum Unit
- H-8576 Magnetic Disk Unit
- H-8577 Grouped Magnetic Disk Drive
- H-8589-1 Magnetic Disk Drive
- H-8589-11 Magnetic Disk Drive
- H-8595 Magnetic Disk Unit
- H-8598 Magnetic Disk Unit
- H. Berry Cash
- H2H Solutions, Inc.
- H55A
- H55M-S
- H55MX-S
- H55MXV
- H55MXV LE
- H61A
- H61AP
- H61AP-S
- H61M-S
- H61MX
- H61MX EL
- H61MXE
- H61MXE-K
- H61MXE-S
- H61MXE-V
- H61MXL
- H61MXL-K
- H61MXP
- H61MXV
- H61S
- H67A
- H67A-S
- H67M
- H67M-S
- H67M-V
- H67MP
- H67MP-S
- H67MP-V
- H67MXV
- H67S
- H77M
- H77M-S
- H77MXV
- H77MXV-D