Company lists · Data refreshed November 2026

Top 23 Custom application development services based in Kolkata, India

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 434 companies tracked

RevenueBase identified 434 company matches for custom application development services associated with Kolkata, India as of November 2026 and tracks 4,184 professional contacts across them, including 499 with verified work emails. Across India, Bangalore is the largest hub for this category (1,363 companies); Kolkata has 434.

This list covers company matches for custom application development services associated with Kolkata, India, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

434Companies

4,184Contacts tracked

499Verified emails

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The 23 largest custom application development services based in Kolkata, India

Ranked by team size

Top 23 of 434 company matches for custom application development services based in Kolkata, India, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Sentientgeeks	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	228 contacts →
	Exact match “Are you looking for professional & experienced offshore developers for promoting your brands digitally?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Nimbus Systems PVT LTD	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	92 contacts →
	Exact match “Nimbus Systems is a leading Offshore and Onsite Software Solutions & IT Service provider present in 10 countries, including India, UAE, Europe, and the US.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Itobuz Technologies	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	90 contacts →
	Exact match “Itobuz Technologies Pvt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Esoft Technology Solutions	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	n/a	81 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Tech Exactly	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	70 contacts →
	Exact match “Tech Exactly is an award-winning Indian digital product engineering company dedicated to empowering Financial Services, Medical Device Manufacturing, and Biotech organizations…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Fortmindz	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	65 contacts →
	Exact match “At Formindz we strive to offer you a broad experience with industry leading development practices and innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Maxbridge Solution LLP	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	64 contacts →
	Exact match “First of all let us take the opportunity to introduce Maxbridge Solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Infosolz Consultancy Services Pvt. LTD	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	63 contacts →
	Exact match “Infosolz Consultancy Services Pvt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Albatross Software Services Private Limited	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	201-500	61 contacts →
	Exact match “Founded in 1992, Albatross Software Services Pvt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Proclivity Digitech Private Limited	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	54 contacts →
	Exact match “Proclivity Digitech is a leading Software Development and IT organization based in Kolkata, India.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Codebuddy Pvt. LTD	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	52 contacts →
	Exact match “Codebuddy is an AI-native engineering studio and reliable technology partner, built around our customers’ needs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	ADA Software RE Engineering Services Pvt. LTD	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	37 contacts →
	Exact match “Over the years ADA Software has developed its expertise in the re-engineering and modernization of legacy application software and has delivered projects involving large and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	WEB Idea Solution LLP	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	37 contacts →
	Exact match “Web Idea Solution LLP is a software development and IT consulting company in India providing full-stack solutions for web design, web development, ecommerce, app development…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Fleapo	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	31 contacts →
	Exact match “Fleapo Corporation is a Young & Professional Information Technology Solutions Provider specializing in Mobile Apps Development, Customised Web Apps Development and Internet…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Mobotics Technologies Private Limited	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	28 contacts →
	Exact match “Mobotics Technologies Private Limited is a leading Software Development and IT services company with over a decade of experience in delivering cutting-edge solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	RNJ Consultancy Services	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	28 contacts →
	Exact match “RNJ Consultancy Services is a web, software development and consulting firm providing customized solutions to businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Webingo	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	26 contacts →
	Exact match “Webingo is a leading end-to-end IT solution company based in India.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Shanvia Tech Solutions PVT LTD	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	25 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Simayaa Technologies	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	51-200	23 contacts →
	Exact match “Simayaa Technologies is one of the leading providers of Software & IT Consulting services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Techwens	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	23 contacts →
	Exact match “Techwens is the best Custom Enterprise Software Development Services in India.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Openweb Solutions	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	22 contacts →
	Exact match “Openweb Solutions is a technology service provider, providing analytics, cloud, web and mobility services to organizations across the globe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	NEO Coderz Technologies	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	22 contacts →
	Exact match “Neo Coderz Technologies is a global service provider in IT services, digital and business solutions that partners with its clients to simplify, strengthen and transform their…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Xiphos Technology Solutions Pvt. LTD	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	11-50	21 contacts →
	Exact match “Xiphos Technology Solutions Private Limited is a global Technology Consulting, Software Development and Services organization, incorporated in 2011.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “custom application development services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 23 of 434 custom application development services based in Kolkata, India

See the full list, filter by size, metro and specialty, and access 499 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom application development services based in Kolkata, India at a glance

As of Nov 6, 2026

11.9%Verified-email coverage

9.6Average contacts per company

11-50Median size (employees)

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

155

11-50

216

51-200

201-500

501-1,000

1,001-5,000

10001+

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 434 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Kolkata, India whose business descriptions match “custom application development services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 499 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Custom application development services by metro in India

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “custom application development services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom application development services are there based in Kolkata, India?

RevenueBase identified 434 company matches for custom application development services associated with Kolkata, India as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Sentientgeeks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in India has the most custom application development services?

Bangalore leads India with 1,363 company records, followed by Ahmedabad (1,315) and Pune (1,305). Kolkata has 434.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 499 professional contacts with verified work emails tracked across these 434 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.