Company lists · Data refreshed September 2026

Top 25 Environmental software developers based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 376 companies tracked

RevenueBase identified 376 environmental software developers headquartered in the United States as of September 2026 and tracks 11,705 professional contacts across them, including 4,476 with verified work emails. Houston is the largest hub.

This list covers environmental software developers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

376Companies

11,705Contacts tracked

4,476Verified emails

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The 25 largest environmental software developers based in the United States

Ranked by team size

Top 25 of 376 environmental software developers based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to environmental software developers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Sphera	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,349 contacts →
	Indirect evidence “Sphera creates a safer, more sustainable and productive world.” Source: RevenueBase Database · checked Sep 28, 2026
2	Adec Innovations	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,304 contacts →
	Partial evidence “ADEC Innovations seamlessly delivers fully integrated, cost-effective industry expertise, business process & data management, and software services.” Source: RevenueBase Database · checked Sep 28, 2026
3	ESS	Strong evidence	Tempe, AZ, United StatesHQ checked Sep 28, 2026	n/a	1,201 contacts →
	Strong evidence “ESS is the leading provider of Environmental, Health & Safety (EHS) and Crisis Management sustainability software.” Source: RevenueBase Database · checked Sep 28, 2026
4	Velocityehs	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	501-1,000	568 contacts →
	Partial evidence “VelocityEHS is the global leader in EHS & Sustainability software, pioneering human-centered AI to make workplaces safer, faster.” Source: RevenueBase Database · checked Sep 28, 2026
5	Integral Consulting INC	Indirect evidence	Boulder, CO, United StatesHQ checked Sep 28, 2026	201-500	299 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
6	GSI Environmental INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	201-500	259 contacts →
	Partial evidence “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Source: RevenueBase Database · checked Sep 28, 2026
7	Environmental Works, INC	Partial evidence	Springfield, MO, United StatesHQ checked Sep 28, 2026	201-500	238 contacts →
	Partial evidence “Environmental Works, Inc.(EWI) offers truly comprehensive environmental solutions for a variety of industries, businesses, and municipalities.” Source: RevenueBase Database · checked Sep 28, 2026
8	Metiri Group	Partial evidence	Clovis, CA, United StatesHQ checked Sep 28, 2026	n/a	233 contacts →
	Partial evidence “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Source: RevenueBase Database · checked Sep 28, 2026
9	OTT Hydromet	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 28, 2026	201-500	231 contacts →
	Indirect evidence “OTT HydroMet works to deliver customer outcomes by providing decision makers with vital insights they trust.” Source: RevenueBase Database · checked Sep 28, 2026
10	Opus Inspection Technologies	Indirect evidence	Brookfield, WI, United StatesHQ checked Sep 28, 2026	201-500	231 contacts →
	Indirect evidence “Opus Inspection Technologies is a leader in developing, implementing and managing innovative technology and system solutions that enable customers worldwide to address their…” Source: RevenueBase Database · checked Sep 28, 2026
11	Ysi, INC	Strong evidence	Yellow Springs, OH, United StatesHQ checked Sep 28, 2026	201-500	194 contacts →
	Strong evidence “YSI is the maker of environmental, laboratory, and municipal monitoring instruments, sensors, software, systems, and data collection platforms for water quality monitoring and…” Source: RevenueBase Database · checked Sep 28, 2026
12	Plateau GRP	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 28, 2026	51-200	192 contacts →
	Indirect evidence “Plateau Grp provides innovative and agile IT solutions to customer challenges.” Source: RevenueBase Database · checked Sep 28, 2026
13	Normandeau Associates, INC	Indirect evidence	Bedford, NH, United StatesHQ checked Sep 28, 2026	201-500	189 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
14	In-Situ Environmental	Indirect evidence	Fort Collins, CO, United StatesHQ checked Sep 28, 2026	201-500	170 contacts →
	Indirect evidence “In-Situ simplifies water monitoring for surface water, coastal, groundwater, aquaculture, drinking water and wastewater applications with reliable, low-maintenance instrumentation…” Source: RevenueBase Database · checked Sep 28, 2026
15	Earthsoft	Partial evidence	Pensacola, FL, United StatesHQ checked Sep 28, 2026	51-200	168 contacts →
	Partial evidence “EarthSoft is the recognized leader in providing environmental and geotechnical data management and decision support systems for industrial organizations, government agencies…” Source: RevenueBase Database · checked Sep 28, 2026
16	Meter Group	Partial evidence	Pullman, WA, United StatesHQ checked Sep 28, 2026	201-500	164 contacts →
	Partial evidence “METER Group designs and manufactures scientific instrumentation that delivers real-time, environmental data to the agricultural, urban, and research sectors.” Source: RevenueBase Database · checked Sep 28, 2026
17	TASC	Indirect evidence	Seabrook, TX, United StatesHQ checked Sep 28, 2026	201-500	161 contacts →
	Indirect evidence “Automation and Technology Group: Specializing in Analyzer System Integration.” Source: RevenueBase Database · checked Sep 28, 2026
18	Lamotte Company	Partial evidence	Chestertown, MD, United StatesHQ checked Sep 28, 2026	201-500	154 contacts →
	Partial evidence “Since 1919, we are a leading manufacturer of environmental testing equipment for water and soil.” Source: RevenueBase Database · checked Sep 28, 2026
19	Li-Cor	Partial evidence	Lincoln, NE, United StatesHQ checked Sep 28, 2026	201-500	136 contacts →
	Partial evidence “LI-COR is a leader in environmental measurement and monitoring solutions.” Source: RevenueBase Database · checked Sep 28, 2026
20	Metiri Group	Partial evidence	Geneva, IL, United StatesHQ checked Sep 28, 2026	201-500	112 contacts →
	Partial evidence “Established in 2019, Metiri Group has focused on using full-service environmental laboratories to deliver testing services to inform the decisions that improve the lives of people…” Source: RevenueBase Database · checked Sep 28, 2026
21	Locus Technologies	Strong evidence	Mountain View, CA, United StatesHQ checked Sep 28, 2026	51-200	95 contacts →
	Strong evidence “Locus Technologies is the only scientist-driven software company at the nexus of analytical and field data management, Environmental, Health, and Safety (EHS) compliance, and…” Source: RevenueBase Database · checked Sep 28, 2026
22	Aerodyne Research	Partial evidence	Billerica, MA, United StatesHQ checked Sep 28, 2026	51-200	92 contacts →
	Partial evidence “Aerodyne Research, Inc.(ARI) provides research and development (R&D) services and advanced sensor and software products to industrial, academic and government customers addressing…” Source: RevenueBase Database · checked Sep 28, 2026
23	Geotech Environmental Equipment, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	83 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
24	Encamp	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 28, 2026	51-200	81 contacts →
	Partial evidence “Encamp is an enterprise technology company on a mission to create a world in which what’s good for business can be good for the environment.” Source: RevenueBase Database · checked Sep 28, 2026
25	BEM Systems, INC	Partial evidence	Madison, NJ, United StatesHQ checked Sep 28, 2026	11-50	78 contacts →
	Partial evidence “Founded in 1990, BEM Systems, Inc.(BEM) is an environmental, engineering, and information management firm specializing in remedial investigations and environmental management.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: environmental software developers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names environmental software developers.
Partial evidence: Its own public description names part of environmental software developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental software developers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 376 environmental software developers based in the United States

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Environmental software developers based in the United States at a glance

As of Sep 28, 2026

38.2%Verified-email coverage

31.1Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

181

11-50

129

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 376 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among environmental software developers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “environmental software developers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names environmental software developers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among environmental software developers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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: Every listed company carries at least one verified work email, 4,476 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names environmental software developers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many environmental software developers are there based in the United States?

RevenueBase identified 376 environmental software developers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Sphera, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most environmental software developers?

Houston leads with 10 headquartered companies, followed by Seattle (8) and Boulder (6).

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 4,476 verified decision-maker contacts tracked across these 376 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.