Company lists · Data verified August 2026
Top 25 Environmental modeling software companies based in the United States
There are 73 environmental modeling software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 1,331 professional contacts across them, including 612 with verified work emails and 424 with mobile numbers. Denver is the largest hub.
This list covers environmental modeling software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.
The 25 largest environmental modeling software companies based in the United States
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 |  IES LTD | 199 |
| 2 | VMC Group | 55 |
| 3 |  Earthsoft | 104 |
| 4 |  Locus Technologies | 42 |
| 5 |  Riverside Technology, INC | 2 |
| 6 |  Stone Environmental | 56 |
| 7 | Njbsoft, LLC | 23 |
| 8 |  Aquaveo | 21 |
| 9 |  Pioneer Technologies Corporation | 20 |
| 10 | Gemini Engineering & Sciences, INC | 10 |
| 11 | Lakes Environmental Software | 9 |
| 12 |  Mapistry | 11 |
| 13 |  BIG Ladder Software | 14 |
| 14 | Ladybug Tools | 6 |
| 15 | Sampleserve | 3 |
| 16 | Geotech Computer Systems, INC | 1 |
| 17 |  Aphinitytech | 6 |
| 18 |  C Tech Development Corporation | 4 |
| 19 | Vieux & Associates, INC | 3 |
| 20 |  Isee Systems, INC | 4 |
| 21 |  Blue SKY Modeling, LLC | 3 |
| 22 | Zero Envy | 3 |
| 23 | Navfeas | 2 |
| 24 | Fastcast | 2 |
| 25 | Mixzon, INC | 1 |
Showing 25 of 73 environmental modeling software companies based in the United States
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Environmental modeling software companies based in the United States at a glance
As of Aug 28, 2026Companies by employee count
Environmental modeling software companies by metro
| Metro | Companies |
|---|---|
| Environmental modeling software companies in Denver | 2 |
| Environmental modeling software companies in Portland | 2 |
| Environmental modeling software companies in Fairfax | 2 |
| Environmental modeling software companies in Phoenix | 2 |
| Environmental modeling software companies in Austin | 2 |
| Environmental modeling software companies in Martinez | 1 |
| Environmental modeling software companies in La Habra | 1 |
| Environmental modeling software companies in Redwood City | 1 |
How this list was built
- Source
- The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
- Inclusion
- Companies whose own business descriptions match “environmental modeling software companies”, with match quality audited by blind human judging, and headquartered in the United States.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
- Refresh
- Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.
Frequently asked
How many environmental modeling software companies are there based in the United States?
There are 73 environmental modeling software companies headquartered in the United States as of August 2026 (RevenueBase).
What is the largest company on this list?
IES LTD, headquartered in Santa Clara, tops this list with the largest team on record.
Which city has the most environmental modeling software companies?
Denver leads with 2 headquartered companies, followed by Portland (2) and Fairfax (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 612 verified decision-maker contacts tracked across these 73 companies.
How current is this list?
The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.
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About this data
RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.
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