Company lists · Data refreshed September 2026

Top 25 Cloud application development firms based in Kolkata, India

Name: Cloud application development firms based in Kolkata, India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 246 companies tracked

RevenueBase identified 246 cloud application development firms headquartered in Kolkata, India as of September 2026 and tracks 4,048 professional contacts across them, including 1,013 with verified work emails. Across India, Pune is the largest hub for this category (848 companies); Kolkata has 246.

This list covers cloud application development firms headquartered in Kolkata, India, 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 27, 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 27, 2026 86% judged on-target in blind review

246Companies

4,048Contacts tracked

1,013Verified emails

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The 25 largest cloud application development firms based in Kolkata, India

Ranked by team size

Top 25 of 246 cloud application development firms based in Kolkata, India, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to cloud application development firms: 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	Capital Numbers	Strong evidence	Kolkata, IndiaHQ checked Sep 27, 2026	501-1,000	641 contacts →
	Strong evidence “Capital Numbers – Transforming Businesses with AI, Cloud & Digital Engineering BSE-Listed \| 500+ Experts \| AI, Cloud, Data, System Integration & Custom Software Development We…” Source: RevenueBase Database · checked Sep 27, 2026
2	Cloudkaptan	Partial evidence	Kolkata, IndiaHQ checked Sep 27, 2026	51-200	339 contacts →
	Partial evidence “CloudKaptan is a global IT services, consulting, and business solutions provider, empowering organizations through AI, Data, and Cloud.” Source: RevenueBase Database · checked Sep 27, 2026
3	Brainium Information Technologies	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	201-500	310 contacts →
	Indirect evidence “Brainium Information Technologies is an AI-First technology partner helping businesses build, scale, and modernize digital products faster with intelligence built in.” Source: RevenueBase Database · checked Sep 27, 2026
4	Sentientgeeks	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	51-200	229 contacts →
	Indirect evidence “Are you looking for professional & experienced offshore developers for promoting your brands digitally?” Source: RevenueBase Database · checked Sep 27, 2026
5	Workmates Core2cloud	Partial evidence	Kolkata, IndiaHQ checked Sep 27, 2026	51-200	177 contacts →
	Partial evidence “Workmates is a leading cloud-managed services provider and IT solutions company, proudly holding the prestigious AWS Premier Tier Services Partner status.” Source: RevenueBase Database · checked Sep 27, 2026
6	Nimbus Systems PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	51-200	99 contacts →
	Indirect evidence “Nimbus Systems is a leading Offshore and Onsite Software Solutions & IT Service provider present in 10 countries, including India, UAE, Europe, and the US.” Source: RevenueBase Database · checked Sep 27, 2026
7	Webgen Technologies	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	51-200	86 contacts →
	Indirect evidence “Founded in mid-2011, Webgen Technologies is a technologically advanced, people-centric, ambitious & customer-focused company.” Source: RevenueBase Database · checked Sep 27, 2026
8	Esoft Technology Solutions	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	n/a	74 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
9	Maxbridge Solution LLP	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	66 contacts →
	Indirect evidence “First of all let us take the opportunity to introduce Maxbridge Solutions.” Source: RevenueBase Database · checked Sep 27, 2026
10	Achievex Solutions Private Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	51-200	59 contacts →
	Indirect evidence “AchieveX Solutions is a new-age company under the Startup India flagship that solely believes in entrenching innovation to your ideas and turning them into reality.” Source: RevenueBase Database · checked Sep 27, 2026
11	Objectsol Technologies PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	51-200	53 contacts →
	Indirect evidence “For over 15 years, ObjectSol Technologies has been a trusted partner, transforming businesses across BFSI, Healthcare, Retail, Transportation, ISP, Utilities, Fintech, Hospitality…” Source: RevenueBase Database · checked Sep 27, 2026
12	Growth Loops Technology	Partial evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	45 contacts →
	Partial evidence “Growth Loops Technology is a leading software development agency that provides end-to-end solutions to help businesses achieve their digital goals.” Source: RevenueBase Database · checked Sep 27, 2026
13	Webmaa	Partial evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	45 contacts →
	Partial evidence “Webmaa is your digital partner for innovative web, mobile, and cloud solutions.” Source: RevenueBase Database · checked Sep 27, 2026
14	Keyline Digitech PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	41 contacts →
	Indirect evidence “Keyline Digitech is a trusted IT solutions partner with over 20 years of experience, empowering businesses to thrive in the digital world.” Source: RevenueBase Database · checked Sep 27, 2026
15	Aquarious Technology Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	30 contacts →
	Indirect evidence “Aquarious Technology is a global IT services company helping forward-thinking enterprises, funded startups, and global brands transform operations through AI-powered software…” Source: RevenueBase Database · checked Sep 27, 2026
16	Mobotics Technologies Private Limited	Partial evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	27 contacts →
	Partial evidence “Mobotics Technologies Private Limited is a leading Software Development and IT services company with over a decade of experience in delivering cutting-edge solutions.” Source: RevenueBase Database · checked Sep 27, 2026
17	Moresco Software Services Pvt. LTD	Partial evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	25 contacts →
	Partial evidence “Moresco Software is a knowledge company currently providing information technology solutions to help organizations achieve their goals with services ranging from Cloud IT…” Source: RevenueBase Database · checked Sep 27, 2026
18	Openweb Solutions	Partial evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	23 contacts →
	Partial evidence “Openweb Solutions is a technology service provider, providing analytics, cloud, web and mobility services to organizations across the globe.” Source: RevenueBase Database · checked Sep 27, 2026
19	Webtechnomind IT Solutions Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	22 contacts →
	Indirect evidence “Webtechnomind IT Solutions is a Digital Service Agency based in Kolkata, India.” Source: RevenueBase Database · checked Sep 27, 2026
20	Techwens	Partial evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	22 contacts →
	Partial evidence “Techwens is the best Custom Enterprise Software Development Services in India.” Source: RevenueBase Database · checked Sep 27, 2026
21	Centreax Technologies	Strong evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	20 contacts →
	Strong evidence “Centreax Technologies a software development and consulting organization providing application development, security consulting and IT Managed services to a number of domestic and…” Source: RevenueBase Database · checked Sep 27, 2026
22	Kalkey	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	20 contacts →
	Indirect evidence “We are the top notch software training institute where we provide the live project to practice for industrial level job role courses.” Source: RevenueBase Database · checked Sep 27, 2026
23	Shanvia Tech Solutions PVT LTD	Strong evidence	Kolkata, IndiaHQ checked Sep 27, 2026	11-50	19 contacts →
	Strong evidence “We (M/S Shanvia Tech Solutions Pvt Ltd) house a team of experts (proficient in custom Web Application Development, Mobile Apps Development, AI Development, Software Development…” Source: RevenueBase Database · checked Sep 27, 2026
24	Wift CAP Solutions PVT LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	51-200	18 contacts →
	Indirect evidence “Wift Cap Solutions Pvt Ltd is a software services company based in Kolkata, India.” Source: RevenueBase Database · checked Sep 27, 2026
25	Unnatim	Indirect evidence	Kolkata, IndiaHQ checked Sep 27, 2026	501-1,000	17 contacts →
	Indirect evidence “Unnatim India Limited is a Software company in India.” Source: RevenueBase Database · checked Sep 27, 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: cloud application development firms. 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 cloud application development firms.
Partial evidence: Its own public description names part of cloud application development firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cloud application development firms. 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 246 cloud application development firms based in Kolkata, India

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Cloud application development firms based in Kolkata, India at a glance

As of Sep 27, 2026

25.0%Verified-email coverage

16.5Average contacts per company

11-50Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

124

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole India list rather than for Kolkata, so it is reported there. Company counts and contact totals on this page are exact for Kolkata, over 246 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 cloud application development firms, 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 Kolkata, India whose own description of what they do matches “cloud application development firms”. 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 cloud application development firms), 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 cloud application development firms, and records with no verified work email. Companies headquartered outside Kolkata 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, 1,013 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 27, 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.

Cloud application development firms by metro in India

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 cloud application development firms, 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 cloud application development firms are there based in Kolkata, India?

RevenueBase identified 246 cloud application development firms headquartered in Kolkata, India 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?

Capital Numbers, headquartered in Kolkata, tops this list with the largest team on record.

Which city in India has the most cloud application development firms?

Pune leads India with 848 headquartered companies, followed by Ahmedabad (800) and Hyderabad (719). Kolkata has 246.

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 1,013 verified decision-maker contacts tracked across these 246 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 27, 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.