Company lists · Data verified August 2026

Top 25 City carbon accounting software providers based in the United States

Name: City carbon accounting software providers 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 157 companies tracked

There are 157 city carbon accounting software providers headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 2,313 professional contacts across them, including 876 with verified work emails and 853 with mobile numbers. San Francisco is the largest hub.

This list covers city carbon accounting software providers 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.

157Companies

2,313Contacts tracked

876Verified emails

853Mobile numbers

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The 25 largest city carbon accounting software providers based in the United States

Ranked by team size

Top 25 of 157 city carbon accounting software providers 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	Watershed	San Francisco, CA	201-500	537	96
2	Carbon Direct	New York City	51-200	171	117
3	Touchstone IQ	Denver, CO	51-200	136	39
4	Pulsora	San Mateo, CA	51-200	101	29
5	Locus Technologies	Mountain View, CA	51-200	94	42
6	Dilax Intelcom	Chicago, IL	51-200	82	48
7	Gravity	New York, NY	51-200	58	35
8	Aclima, INC	San Francisco, CA	51-200	57	12
9	Sinai Carbon Management	San Francisco, CA	51-200	54	23
10	Optera	Boulder, CO	11-50	46	35
11	Watchwire By Tango	New York, NY	11-50	39	19
12	Bevolve	Houston, TX	11-50	30	8
13	ZASTI	Virginia, VA	11-50	27	10
14	Calico Energy	Seattle, WA	11-50	26	16
15	Adaptis	New York	11-50	26	4
16	Envana Software Solutions	Houston, TX	11-50	25	19
17	NZERO	Reno, NV	11-50	24	18
18	Cloverly	Atlanta, GA	11-50	24	18
19	Aligned Incentives, A Bureau Veritas Company	Middleton, MA	11-50	23	15
20	Accel1	Alpharetta, GA	51-200	20	5
21	Open Earth Foundation	Los Angeles	11-50	19	15
22	Cleartrace	Austin, TX	11-50	19	14
23	good.lab	San Mateo, CA	11-50	18	12
24	ISL Analytics	Las Vegas, NV	11-50	18	8
25	Ecocart	San Francisco, CA	51-200	18	7

Showing 25 of 157 city carbon accounting software providers based in the United States

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City carbon accounting software providers based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

San FranciscoLargest hub · 18 HQs

853Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

City carbon accounting software providers by metro

Metro	Companies
City carbon accounting software providers in San Francisco	18
City carbon accounting software providers in New York	16
City carbon accounting software providers in Houston	8
City carbon accounting software providers in Berkeley	5
City carbon accounting software providers in Boulder	5
City carbon accounting software providers in New York City	5
City carbon accounting software providers in Boston	4
City carbon accounting software providers in Austin	4

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 “city carbon accounting software providers”, 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; 2 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 city carbon accounting software providers are there based in the United States?

There are 157 city carbon accounting software providers headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Watershed, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most city carbon accounting software providers?

San Francisco leads with 18 headquartered companies, followed by New York (16) and Houston (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 876 verified decision-maker contacts tracked across these 157 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.