- Hillsdale College Online Courses
- HikaShop
- HelpSystems
- Heated Sneaks
- Half Hitch
- Hyperspin
- Happy Numbers
- History Today
- Hyland
- Hyperkin
- Hireology
- Helpdesk
- Hesk
- Hatch Early Learning
- Hypothesis
- Heartland Payment Systems
- HyperPay
- HerPaperRoute
- Hyperlink InfoSystem
- Humaaans
- HitRECord
- HeyTaco!
- Hivedesk
- Hibox
- Hextom
- Herzing
- HL7
- Healthcarestudies.com
- Human Gives UK
- HospitalCareers
- Hcareers
- Hosco
- HostBooks
- Herald-Tribune
- Happeo
- HelpDocs
- Heights Platform
- Hard Rock Casino
- HotFreebees
- Headache Sound Electronics
- Hyperbits
- Hip & Healthy
- Halo Chic
- Honey Cocoon
- Heathcote Appliances
- How to Win College Scholarships
- HSF
- HHLoans
- Heartland Communications
- Hack Design
- HydroCAD
- Hello Flock
- HubStor
- Harriman-House.
- H.BLOOM
- HostHero
- Hacking Chinese
- HC Services
- Hundred.org
- HostUp
- House of Carts
- Hamilton Medical
- Hello Rache
- Hospitality Online
- Hotel Career
- Hireflix
- Heffner Management
- HeartlandMusic
- HarperDB
- Hazelcast
- Home Dynamix
- Hart Sport
- Hmizate.ma
- Human Empire Shop
- Hanhphu
- Happy Apps
- Horos Academy
- Howspace
- Hallmark Data Systems
- Hollywolf