Company lists · Data verified August 2026

Top 25 Carbon accounting software companies based in the United States

Name: Carbon accounting 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 297 companies tracked

There are 297 carbon accounting software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 7,772 professional contacts across them, including 3,371 with verified work emails and 2,546 with mobile numbers. New York is the largest hub.

This list covers carbon accounting 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.

297Companies

7,772Contacts tracked

3,371Verified emails

2,546Mobile numbers

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The 25 largest carbon accounting software companies based in the United States

Ranked by team size

Top 25 of 297 carbon accounting 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	Sphera	Chicago, IL	1,001-5,000	1,345	925
2	Watershed	San Francisco, CA	201-500	537	96
3	SEDEX	Chicago, IL	201-500	420	178
4	3degrees Group, INC	San Francisco, CA	201-500	325	216
5	Cimarron	Marlow, OK	501-1,000	316	165
6	Picarro	Santa Clara, CA	201-500	298	202
7	ESG Book	Boston, MA	201-500	212	141
8	Carbon Direct	New York City	51-200	171	117
9	Worldly	Concord, CA	51-200	144	74
10	Touchstone IQ	Denver, CO	51-200	136	39
11	RE Tech Advisors	Dallas, TX	51-200	123	104
12	Pulsora	San Mateo, CA	51-200	101	29
13	Locus Technologies	Mountain View, CA	51-200	94	42
14	Credibl	Fremont, CA	51-200	76	43
15	Ecoact Part Of Schneider Electric	New York, NY	201-500	70	19
16	Greenplaces	Raleigh, NC	51-200	58	36
17	Gravity	New York, NY	51-200	58	35
18	Sinai Carbon Management	San Francisco, CA	51-200	54	23
19	SPRIH	Philadelphia, PA	11-50	46	25
20	Spectreco	Atlanta, GA	11-50	45	18
21	Unravel Carbon	San Francisco, CA	11-50	43	17
22	Enertiv	New York, NY	51-200	41	25
23	Watchwire By Tango	New York, NY	11-50	39	19
24	Sagiliti	Excelsior, MN	51-200	37	3
25	Lynam Industries, INC	Fontana, CA	51-200	36	28

Showing 25 of 297 carbon accounting software companies based in the United States

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Carbon accounting software companies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 27 HQs

2,546Contacts with mobile numbers

16Emails re-verified in last 30 days

Companies by employee count

1-10

161

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Carbon accounting software companies by metro

Metro	Companies
Carbon accounting software companies in New York	27
Carbon accounting software companies in San Francisco	25
Carbon accounting software companies in Houston	12
Carbon accounting software companies in New York City	7
Carbon accounting software companies in Seattle	7
Carbon accounting software companies in Austin	7
Carbon accounting software companies in Chicago	7
Carbon accounting software companies in Portland	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 “carbon accounting 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; 16 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 carbon accounting software companies are there based in the United States?

There are 297 carbon accounting software companies headquartered in the United States as of August 2026 (RevenueBase).

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 carbon accounting software companies?

New York leads with 27 headquartered companies, followed by San Francisco (25) and Houston (12).

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 3,371 verified decision-maker contacts tracked across these 297 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.