Company lists · Data refreshed September 2026

Top 25 Custom CRM software developers worldwide

RevenueBase identified 3,852 custom CRM software developers worldwide as of September 2026 and tracks 155,764 professional contacts across them, including 77,739 with verified work emails and 35,926 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers custom CRM software developers worldwide, 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 1, 2026. Country and city lists for custom CRM software developers follow the table.

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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review
3,852Companies
155,764Contacts tracked
77,739Verified emails
35,926Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest custom CRM software developers worldwide

Ranked by team size
Top 25 of 3,852 custom CRM software developers worldwide, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to custom CRM 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceLondon, GB10001+85,557 contacts →

Strong evidence

“We're the #1 AI CRM-where humans with agents drive customer success together with AI, data, and Customer 360 apps on one platform.”

Source: RevenueBase Database · checked Sep 1, 2026
2Indirect evidenceBelo Horizonte, BR10001+16,921 contacts →

Indirect evidence

“Queremos ser admirados por nossa capacidade de protagonizar a transformação nos relacionamentos, porque acreditamos que relacionamentos transformam pessoas, empresas e o mundo.”

Source: RevenueBase Database · checked Sep 1, 2026
3Strong evidenceAmsterdam, NL5,001-10,00010,997 contacts →

Strong evidence

“HubSpot is a leading agentic customer platform that provides software and support to help businesses grow better.”

Source: RevenueBase Database · checked Sep 1, 2026
4Partial evidenceBoston, MA, US1,001-5,0002,859 contacts →

Partial evidence

“Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.”

Source: RevenueBase Database · checked Sep 1, 2026
5Indirect evidenceSao Paulo, BR5,001-10,0001,154 contacts →

Indirect evidence

“A Uranet é uma referência no mercado em soluções de relacionamento com o cliente e em projetos que visam vendas de produtos e/ou serviços.”

Source: RevenueBase Database · checked Sep 1, 2026
6Partial evidenceCZ501-1,000972 contacts →

Partial evidence

“Founded in 2010, Pipedrive is an easy and effective sales CRM that drives small business growth.”

Source: RevenueBase Database · checked Sep 1, 2026
7Strong evidenceHamburg, DE501-1,000432 contacts →

Strong evidence

“The Swiss software company BSI Software designs, develops, and sells market-leading European CRM and CX software that is not only technologically exceptional but also…”

Source: RevenueBase Database · checked Sep 1, 2026
8Partial evidenceIrvine, CA, US201-500431 contacts →

Partial evidence

“Headquartered in New Delhi, India Cubastion is specialized and focused CRM consultancy serving clients across Automotive, Consumer Durable, Financial Services, Communication…”

Source: RevenueBase Database · checked Sep 1, 2026
9Partial evidenceParis, FR1,001-5,000397 contacts →

Partial evidence

“Avec un CA de 35 M € et 1200 collaborateurs, le groupe EURO CRM compte aujourd'hui parmi les acteurs majeurs du marché de la gestion de la relation client à distance.”

Source: RevenueBase Database · checked Sep 1, 2026
10Strong evidenceMilpitas, CA, US201-500376 contacts →

Strong evidence

“CRMIT Solutions is a leading CRM Solutions Provider specializing in AI-led digital transformation and decision transformation solutions, all powered by Customer360++(a proprietary…”

Source: RevenueBase Database · checked Sep 1, 2026
11Partial evidenceParis, FR201-500367 contacts →

Partial evidence

“Soft Computing est une société de conseil et de services spécialisée en Gestion de la Relation Client (CRM), Pilotage de la Performance (Business Intelligence) et e-Business.”

Source: RevenueBase Database · checked Sep 1, 2026
12Indirect evidenceSan Francisco, CA, US201-500325 contacts →

Indirect evidence

“Rolustech is a full-service SugarCRM and Salesforce Partner firm, with its headquarters in Pakistan and regional offices in the UK and USA.”

Source: RevenueBase Database · checked Sep 1, 2026
13Partial evidenceBR201-500316 contacts →

Partial evidence

“Pmweb has been a CRM leader for over 29 years, establishing itself as the foremost expert in Latin America.”

Source: RevenueBase Database · checked Sep 1, 2026
14Indirect evidencePalo Alto, CA, US501-1,000313 contacts →

Indirect evidence

“True to the industry we serve, we love to travel, work hard, help others, and make the most of every day.”

Source: RevenueBase Database · checked Sep 1, 2026
15Partial evidenceKrakow, PL201-500313 contacts →

Partial evidence

“At Avanquest, we develop software that makes digital simpler, smarter and more useful.”

Source: RevenueBase Database · checked Sep 1, 2026
16Partial evidenceAjmer, IndiaHQ checked Sep 1, 2026201-500289 contacts →

Partial evidence

“iBirds is a CRM consulting and solutions company specializing in cloud computing technologies and platforms.”

Source: RevenueBase Database · checked Sep 1, 2026
17Strong evidenceKarlsruhe, DE201-500279 contacts →

Strong evidence

“The leading provider of CRM solutions for small and medium-sized enterprises In recent years, CAS Software AG has become the German, market-leading innovator for customer…”

Source: RevenueBase Database · checked Sep 1, 2026
18Partial evidenceSurat, IndiaHQ checked Sep 1, 2026201-500252 contacts →

Partial evidence

“AI-First Innovation Meets Enterprise CRM Expertise.”

Source: RevenueBase Database · checked Sep 1, 2026
19Strong evidenceAlbany, NY, US201-500250 contacts →

Strong evidence

“At TRooTech, we engineer intelligent, future-ready business solutions that combine the power of AI, CRM, and custom software development.”

Source: RevenueBase Database · checked Sep 1, 2026
20Strong evidenceLancaster, PA, US51-200236 contacts →

Strong evidence

“Cargas is an employee-owned software company offering ERP and CRM software from Acumatica, Microsoft, Sage, Salesforce, and HubSpot, as well as custom-developed solutions.”

Source: RevenueBase Database · checked Sep 1, 2026
21Indirect evidenceBengaluru, IndiaHQ checked Sep 1, 202651-200231 contacts →

Indirect evidence

“We solve real measurable business problems.”

Source: RevenueBase Database · checked Sep 1, 2026
22Partial evidenceRajajinagar, IndiaHQ checked Sep 1, 202651-200231 contacts →

Partial evidence

“Vtiger is a leading Cloud CRM solution architected on an industry leading Open Source Core.”

Source: RevenueBase Database · checked Sep 1, 2026
23Strong evidenceAjmer, IndiaHQ checked Sep 1, 2026201-500223 contacts →

Strong evidence

CRM Landing Software is a Salesforce Summit Partner, Authorised Consulting Partner, and AppExchange Partner, built upon the pillars of innovation, continuous learning, extensive…”

Source: RevenueBase Database · checked Sep 1, 2026
24Indirect evidenceUA51-200215 contacts →

Indirect evidence

“Cloud Works is a product company – which means we have to solve challenging problems using the newest technologies, and never stop to improve our solution, our code, and our…”

Source: RevenueBase Database · checked Sep 1, 2026
25Indirect evidenceDehradun, IndiaHQ checked Sep 1, 2026201-500196 contacts →

Indirect evidence

“Cynoteck is a Microsoft Solution Partner and Salesforce Consulting Partner Company.”

Source: RevenueBase Database · checked Sep 1, 2026

Showing 25 of 3,852 custom CRM software developers worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 77,739 reachable decision-makers.

Free signup · no credit card

View the full list →

Custom CRM software developers worldwide at a glance

As of Sep 1, 2026
49.9%Verified-email coverage
23.1%Mobile-number coverage
40.4Average contacts per company
1-10Median size (employees)
2.5%Largest-city concentration · London
Sep 1, 2026Page data refreshed

Companies by employee count

1-10
2,172
11-50
1,277
51-200
290
201-500
67
501-1,000
14
1,001-5,000
12
5,001-10,000
4
10001+
4

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 custom CRM 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.
Coverage
27 countries, largest first: the United States, India, the United Kingdom, Brazil, Germany, France, Canada, Australia, the Netherlands, Italy and 17 more. Country and city lists for custom CRM software developers are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “custom CRM 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 custom CRM 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 custom CRM software developers, and records with no verified work email.
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, 77,739 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 between September 1, 2026 and September 14, 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.

Custom CRM software developers by location

33 lists · largest first

Every Custom CRM software developers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 custom CRM 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 custom CRM software developers are there worldwide?

RevenueBase identified 3,852 custom CRM software developers worldwide 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?

Salesforce, headquartered in London, tops this list with the largest team on record.

Which country has the most custom CRM software developers?

The United States leads with 954 companies, followed by India (599) and the United Kingdom (334). Every custom CRM software developers list by country and city is linked on this page.

Which city has the most custom CRM software developers?

London leads with 97 headquartered companies, followed by Sao Paulo (80) and Bangalore (47).

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 77,739 verified decision-maker contacts tracked across these 3,852 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 1, 2026 and September 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,852 custom CRM software developers worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.