Company lists · Data refreshed September 2026

Top 25 Emission monitoring software companies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 238 companies tracked

RevenueBase identified 238 emission monitoring software companies headquartered in the United States as of September 2026 and tracks 7,421 professional contacts across them, including 3,120 with verified work emails. Houston is the largest hub.

This list covers emission monitoring 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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 21, 2026 86% judged on-target in blind review

238Companies

7,421Contacts tracked

3,120Verified emails

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The 25 largest emission monitoring software companies based in the United States

Ranked by team size

Top 25 of 238 emission monitoring software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to emission monitoring software companies: 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 21, 2026	1,001-5,000	1,349 contacts →
	Indirect evidence “Sphera creates a safer, more sustainable and productive world.” Source: RevenueBase Database · checked Sep 21, 2026
2	ESS	Partial evidence	Tempe, AZ, United StatesHQ checked Sep 21, 2026	n/a	1,201 contacts →
	Partial evidence “ESS is the leading provider of Environmental, Health & Safety (EHS) and Crisis Management sustainability software.” Source: RevenueBase Database · checked Sep 21, 2026
3	Cimarron	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	501-1,000	306 contacts →
	Partial evidence “With decades of operating history and innovation across our trusted brands, Cimarron provides technology-driven emissions management solutions for the global energy system.” Source: RevenueBase Database · checked Sep 21, 2026
4	Picarro	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	201-500	297 contacts →
	Partial evidence “Reducing emissions, detecting leaks, mitigating risk, optimizing operations, ensuring compliance and advancing research are some of the challenges facing our clients.” Source: RevenueBase Database · checked Sep 21, 2026
5	OTT Hydromet	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 21, 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 21, 2026
6	Opus Inspection Technologies	Indirect evidence	Brookfield, WI, United StatesHQ checked Sep 21, 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 21, 2026
7	Plateau GRP	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 21, 2026	51-200	192 contacts →
	Indirect evidence “Plateau Grp provides innovative and agile IT solutions to customer challenges.” Source: RevenueBase Database · checked Sep 21, 2026
8	Earthsoft	Indirect evidence	Pensacola, FL, United StatesHQ checked Sep 21, 2026	51-200	168 contacts →
	Indirect 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 21, 2026
9	TASC	Indirect evidence	Seabrook, TX, United StatesHQ checked Sep 21, 2026	201-500	161 contacts →
	Indirect evidence “Automation and Technology Group: Specializing in Analyzer System Integration.” Source: RevenueBase Database · checked Sep 21, 2026
10	Touchstone IQ	Partial evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	51-200	139 contacts →
	Partial evidence “Touchstone IQ is a leading-edge building energy management software & services company.” Source: RevenueBase Database · checked Sep 21, 2026
11	Persefoni	Indirect evidence	Mesa, AZ, United StatesHQ checked Sep 21, 2026	201-500	137 contacts →
	Indirect evidence “Persefoni AI Inc.” Source: RevenueBase Database · checked Sep 21, 2026
12	Li-Cor	Partial evidence	Lincoln, NE, United StatesHQ checked Sep 21, 2026	201-500	136 contacts →
	Partial evidence “LI-COR is a leader in environmental measurement and monitoring solutions.” Source: RevenueBase Database · checked Sep 21, 2026
13	ESC Spectrum Corporation	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	51-200	114 contacts →
	Indirect evidence “Based in Austin, Texas, ESC Spectrum, an Alliance Technical Group company, is a leading provider of products and services for customers in a variety of industries, from Electric…” Source: RevenueBase Database · checked Sep 21, 2026
14	Locus Technologies	Partial evidence	Mountain View, CA, United StatesHQ checked Sep 21, 2026	51-200	95 contacts →
	Partial 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 21, 2026
15	Geotech Environmental Equipment, INC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	51-200	83 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
16	Encamp	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 21, 2026	51-200	81 contacts →
	Indirect 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 21, 2026
17	Insight M, A Zeitview Company	Partial evidence	Sunnyvale, CA, United StatesHQ checked Sep 21, 2026	51-200	80 contacts →
	Partial evidence “Founded in 2014, Insight M is a consultative methane emissions management company driven by our unwavering commitment to scientific rigor and overall customer success.” Source: RevenueBase Database · checked Sep 21, 2026
18	Riverside Technology, INC	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 21, 2026	201-500	72 contacts →
	Indirect evidence “Riverside has been acquired by Consolidated Safety Services Incorporated, please visit us at Riverside is an internationally recognized engineering, science, and information…” Source: RevenueBase Database · checked Sep 21, 2026
19	QED Environmental Systems Americas	Indirect evidence	Dexter, MI, United StatesHQ checked Sep 21, 2026	51-200	71 contacts →
	Indirect evidence “QED Environmental Systems is the world's leading provider of environmental technology solutions.” Source: RevenueBase Database · checked Sep 21, 2026
20	Nevadanano	Strong evidence	Sparks, NV, United StatesHQ checked Sep 21, 2026	51-200	61 contacts →
	Strong evidence “NevadaNano provides safety and climate solutions for many of the world’s largest corporations, with innovative multi-gas sensing products and IIoT automated emissions monitoring…” Source: RevenueBase Database · checked Sep 21, 2026
21	Gravity	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Indirect evidence “Gravity is the only enterprise carbon and energy management platform that helps companies automate reporting and deploy cost-saving energy projects.” Source: RevenueBase Database · checked Sep 21, 2026
22	Aclima, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Indirect evidence “Aclima is pioneering an entirely new way to diagnose the health of our air and track climate-changing pollution.” Source: RevenueBase Database · checked Sep 21, 2026
23	Sensors, INC	Indirect evidence	Saline, MI, United StatesHQ checked Sep 21, 2026	51-200	52 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
24	Ohio Lumex Co., INC	Indirect evidence	Solon, OH, United StatesHQ checked Sep 21, 2026	51-200	50 contacts →
	Indirect evidence “Founded in Ohio Lumex is an analytical technology company serving industrial, energy, environmental, and life sciences markets.” Source: RevenueBase Database · checked Sep 21, 2026
25	ENFOS	Indirect evidence	Warrenville, IL, United StatesHQ checked Sep 21, 2026	11-50	43 contacts →
	Indirect evidence “ENFOS is the enterprise system of record for Environmental Obligation Management.” Source: RevenueBase Database · checked Sep 21, 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: emission monitoring software companies. 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 emission monitoring software companies.
Partial evidence: Its own public description names part of emission monitoring software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name emission monitoring software companies. 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 238 emission monitoring software companies based in the United States

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Emission monitoring software companies based in the United States at a glance

As of Sep 21, 2026

42.0%Verified-email coverage

31.2Average contacts per company

11-50Median size (employees)

3.8%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

102

51-200

201-500

501-1,000

1,001-5,000

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 238 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 emission monitoring software companies, 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 “emission monitoring software companies”. 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 emission monitoring software companies), 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 emission monitoring software companies, 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, 3,120 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 21, 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 emission monitoring software companies, 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 emission monitoring software companies are there based in the United States?

RevenueBase identified 238 emission monitoring software companies 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 emission monitoring software companies?

Houston leads with 9 headquartered companies, followed by Austin (6) and Denver (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 3,120 verified decision-maker contacts tracked across these 238 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 21, 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.