Company lists · Data verified August 2026

Top 25 Environmental software companies based in the United States

Name: Environmental software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 607 companies tracked

There are 607 environmental software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 21,327 professional contacts across them, including 7,885 with verified work emails and 8,060 with mobile numbers. Houston is the largest hub.

This list covers environmental 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.

607Companies

21,327Contacts tracked

7,885Verified emails

8,060Mobile numbers

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The 25 largest environmental software companies based in the United States

Ranked by team size

Top 25 of 607 environmental software companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Swca Environmental Consultants	Phoenix, AZ	1,001-5,000	1,618	1,159
2	Montrose Environmental Group	Little Rock, AR	1,001-5,000	1,516	846
3	Sphera	Chicago, IL	1,001-5,000	1,345	925
4	Alliance Technical Group	Pittsburgh, PA	1,001-5,000	946	549
5	Velocityehs	Tampa, FL	501-1,000	571	410
6	Enablon	Chicago, IL	501-1,000	438	275
7	ROUX	Houston, TX	201-500	435	311
8	IES LTD	Santa Clara, CA	201-500	378	199
9	Opus Inspection Technologies	Brookfield, WI	201-500	264	42
10	GSI Environmental INC	Fayetteville, NY	201-500	253	78
11	OTT Hydromet	Sterling, VA	201-500	240	163
12	Environmental Works, INC	Broomfield, CO	201-500	240	151
13	ARQ	Greenwood Village, CO	201-500	233	59
14	Plateau GRP	Huntsville, AL	51-200	191	3
15	VMC Group	Bloomingdale, NJ	51-200	185	55
16	Earthsoft	Pensacola, FL	51-200	167	104
17	Red-On-Line	New York	201-500	153	94
18	Quest Resource Management Group, A Qrhc Company Nasdaq Qrhc	The Colony, TX	51-200	149	96
19	ISB Global	Dover, DE	51-200	117	70
20	Woods Hole Group, INC	Bourne, MA	51-200	105	69
21	Perennial Environmental Services	Houston, TX	51-200	100	60
22	Field Environmental Instruments	Signal Hill, CA	51-200	96	46
23	Locus Technologies	Mountain View, CA	51-200	94	42
24	Geotech Environmental Equipment, INC	Fort Myers, FL	51-200	83	54
25	Encamp	Indianapolis, IN	51-200	81	43

Showing 25 of 607 environmental software companies based in the United States

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Environmental software companies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

HoustonLargest hub · 24 HQs

8,060Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

304

11-50

212

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Environmental software companies by metro

Metro	Companies
Environmental software companies in Houston	24
Environmental software companies in New York	12
Environmental software companies in Seattle	8
Environmental software companies in Boulder	7
Environmental software companies in Boston	7
Environmental software companies in Austin	7
Environmental software companies in Indianapolis	6
Environmental software companies in Sacramento	6

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 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 software companies are there based in the United States?

There are 607 environmental software companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Swca Environmental Consultants, headquartered in Phoenix, tops this list with the largest team on record.

Which city has the most environmental software companies?

Houston leads with 24 headquartered companies, followed by New York (12) and Seattle (8).

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 7,885 verified decision-maker contacts tracked across these 607 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.