317-622-8970Search all companies →Largest IT Companies in New Hampshire (2026)
Factur's directory lists 1,140 IT companies in New Hampshire. These are the 10 largest of them by annual revenue, led by Amadeus Hospitality Americas Inc ($6.2B), Appian ($579M) and Skillsoft ($545M).
Size mix: of the 1,140 with a known headcount, 94.5% have 1-50 employees, 3.9% 51-200, 1.1% 201-1000, 4 companies 1001-5000 and 1 company 5001+. 11 employ more than 500 people.
The 10 largest IT companies in New Hampshire by annual revenue
| # | Company | City | Employees | Annual revenue |
|---|---|---|---|---|
| 1 | Amadeus Hospitality Americas Inc | Portsmouth | 16,000 | $6.2B |
| 2 | Appian | Mc Lean | 2,033 | $579M |
| 3 | Skillsoft | Greenwood Village | 2,262 | $545M |
| 4 | Parallel Wireless | Nashua | 685 | $253M |
| 5 | Loftware Inc | Portsmouth | 615 | $178M |
| 6 | GlobalSign | Portsmouth | 600 | $146M |
| 7 | RightWorks LLC | Nashua | 650 | $137M |
| 8 | IP Address | Stratham | 578 | $113M |
| 9 | Atom | Nashua | 313 | $69M |
| 10 | Perpetua | Portsmouth | 300 | $63M |
How this list is ranked
Companies are ranked by annual revenue (USD) as recorded on each company's profile in the Factur directory, highest first; companies with the same revenue are ordered by employee count. Only companies with a positive revenue figure on file are ranked, so a large private company with no reported revenue can be missing. The list covers companies whose record places them in New Hampshire and whose Factur industry is IT. Figures are a snapshot of the directory, refreshed when the rankings are regenerated; open a profile for its current data.