Company lists · Data refreshed September 2026

Top 25 Business software integration firms based in Bulgaria

Name: Business software integration firms based in Bulgaria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 210 companies tracked

RevenueBase identified 210 business software integration firms headquartered in Bulgaria as of September 2026 and tracks 2,698 professional contacts across them, including 936 with verified work emails and 29 with mobile numbers. Sofia is the largest hub.

This list covers business software integration firms headquartered in Bulgaria, 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 28, 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 28, 2026 86% judged on-target in blind review

210Companies

2,698Contacts tracked

936Verified emails

29Mobile numbers

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The 25 largest business software integration firms based in Bulgaria

Ranked by team size

Top 25 of 210 business software integration firms based in Bulgaria, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to business software integration 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	Accenture Bulgaria	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	1,001-5,000	448 contacts →
	Indirect evidence “Combining unmatched experience and specialized skills across more than 40 industries, we offer Strategy and Consulting, Technology and Operations Services and Accenture Song - all…” Source: RevenueBase Database · checked Sep 28, 2026
2	Isystems Group	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	201-500	163 contacts →
	Partial evidence “Isystems Group is an international consulting company delivering business software solutions to local and multi-country organizations.” Source: RevenueBase Database · checked Sep 28, 2026
3	BASE	Partial evidence	Plovdiv, BulgariaHQ checked Sep 28, 2026	n/a	141 contacts →
	Partial evidence “Development of custom software solutions, outsourcing, consulting.” Source: RevenueBase Database · checked Sep 28, 2026
4	Bright	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	126 contacts →
	Indirect evidence “BRIGHT (2006–2026) was a leader in IT consulting, helping companies accelerate their digitalization and automation initiatives by delivering solutions designed to meet their…” Source: RevenueBase Database · checked Sep 28, 2026
5	Cnsys PLC	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	121 contacts →
	Indirect evidence “Founded in 1998 in Sofia as an start-up expert company, nowadays CNSYS PLC is one of Bulgaria’s top five system integrators in terms of revenue, IT experience and successful…” Source: RevenueBase Database · checked Sep 28, 2026
6	Comsoft	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	69 contacts →
	Indirect evidence “COMSOFT Ltd is committed to integrity, loyalty and service quality as key issues in its business.” Source: RevenueBase Database · checked Sep 28, 2026
7	Haemimont AD	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	64 contacts →
	Partial evidence “Haemimont specializes in the design and development of turnkey enterprise-level custom software applications targeted at company-specific needs.” Source: RevenueBase Database · checked Sep 28, 2026
8	Balkan Services	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	61 contacts →
	Indirect evidence “Balkan Services is an IT consulting company that helps businesses implement leading solutions like NetSuite, Qlik, Lucanet, and Softone to work smarter, faster, and more…” Source: RevenueBase Database · checked Sep 28, 2026
9	David Holding Company	Partial evidence	Kazanlak, BulgariaHQ checked Sep 28, 2026	51-200	54 contacts →
	Partial evidence “DAVID Holding is leading provider of software solutions and services for transforming the business process efficiency trough electronics collaboration tools.” Source: RevenueBase Database · checked Sep 28, 2026
10	Rila Solutions	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	49 contacts →
	Indirect evidence “Rila Solutions is a leading IT company with proven international experience and a Bulgarian market leader in the field of professional IT consulting and development services.” Source: RevenueBase Database · checked Sep 28, 2026
11	SM Consulta LTD	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	49 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
12	BL Consulting LTD	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	n/a	43 contacts →
	Indirect evidence “BL Consulting Ltd is a high-tech consulting company.” Source: RevenueBase Database · checked Sep 28, 2026
13	Orak Engineering	Partial evidence	Plovdiv, BulgariaHQ checked Sep 28, 2026	51-200	42 contacts →
	Partial evidence “ORAK Engineering is a software consulting company established in 1996 in Plovdiv.” Source: RevenueBase Database · checked Sep 28, 2026
14	Concord EU	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	201-500	37 contacts →
	Indirect evidence “Concord helps big companies untangle their business and technology messes.” Source: RevenueBase Database · checked Sep 28, 2026
15	Jboxers	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	35 contacts →
	Partial evidence “jBoxers provides software development and consulting services in the areas of enterprise applications, business intelligence solutions, distributed systems, mobile applications…” Source: RevenueBase Database · checked Sep 28, 2026
16	Navtech Group	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “NavTech Group is a leading expert in business software solutions for Retail, Hotels & Hospitality, Manufacturing and Services.” Source: RevenueBase Database · checked Sep 28, 2026
17	BGS	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “We are a Business to Business (B2B) IT Services provider.” Source: RevenueBase Database · checked Sep 28, 2026
18	Telebidpro	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “TelebidPro is an EU-based software product company focused on the development of world-class innovative software solutions.” Source: RevenueBase Database · checked Sep 28, 2026
19	TSD Software	Partial evidence	Troyan, BulgariaHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “TSD Software, part of TSD Group, specializes in delivering end-to-end software development services.” Source: RevenueBase Database · checked Sep 28, 2026
20	Donatix	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “Donatix provides full-cycle software development and consulting, delivering tailored digital solutions that drive businesses towards growth and success.” Source: RevenueBase Database · checked Sep 28, 2026
21	Iboris	Partial evidence	Varna, BulgariaHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “iBoris is a software development company with offices in Belgium and Bulgaria.” Source: RevenueBase Database · checked Sep 28, 2026
22	Industria Technology	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “At INDUSTRIA, we specialise in empowering businesses to succeed in today’s dynamic digital landscape.” Source: RevenueBase Database · checked Sep 28, 2026
23	Sirma Insurtech	Indirect evidence	Sofia, BulgariaHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect evidence “Еstablished in 2002 as IT consulting firm TBI Info, nowdays Sirma InsurTech is an IT consulting firm – a recognized expert in the development and implementation of business…” Source: RevenueBase Database · checked Sep 28, 2026
24	Conquex	Partial evidence	Sofia, BulgariaHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Founded in 2005, Conquex is a leading Bulgarian company, specializing in IT and software consulting for medium and large enterprises.” Source: RevenueBase Database · checked Sep 28, 2026
25	Selmatic LTD I Selmatic ERP I Business Software Solutions	Partial evidence	Plovdiv, BulgariaHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “SelMatic is a Bulgarian software and consulting company, part of Total Specific Solutions ("TSS") group, with extensive expertise in developing, implementing, and maintaining…” Source: RevenueBase Database · checked Sep 28, 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: business software integration 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 business software integration firms.
Partial evidence: Its own public description names part of business software integration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business software integration 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 210 business software integration firms based in Bulgaria

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Business software integration firms based in Bulgaria at a glance

As of Sep 28, 2026

34.7%Verified-email coverage

1.1%Mobile-number coverage

12.8Average contacts per company

1-10Median size (employees)

55.7%Largest-city concentration · Sofia

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

107

11-50

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 31.0d

4160–30

42131–60

2561–90

090–180

6180+

Company record updated

Median 93.0d

00–30

53431–60

60061–90

1,33090–180

86180+

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 business software integration 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 Bulgaria whose own description of what they do matches “business software integration 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 business software integration 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 business software integration firms, and records with no verified work email. Companies headquartered outside Bulgaria 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, 936 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 28, 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.

Business software integration firms by metro

Business software integration firms in Sofia117

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 business software integration 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 business software integration firms are there based in Bulgaria?

RevenueBase identified 210 business software integration firms headquartered in Bulgaria 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?

Accenture Bulgaria, headquartered in Sofia, tops this list with the largest team on record.

Which city has the most business software integration firms?

Sofia leads with 117 headquartered companies, followed by Plovdiv (18) and Sofia City (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 936 verified decision-maker contacts tracked across these 210 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 28, 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.