Company lists · Data verified August 2026

Top 25 Custom software development firms based in Bulgaria

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 303 companies tracked

There are 303 custom software development firms headquartered in Bulgaria (RevenueBase, August 2026). RevenueBase tracks 4,230 professional contacts across them, including 1,460 with verified work emails and 73 with mobile numbers. Sofia is the largest hub.

This list covers custom software development firms headquartered in Bulgaria, 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.

303Companies

4,230Contacts tracked

1,460Verified emails

73Mobile numbers

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The 25 largest custom software development firms based in Bulgaria

Ranked by team size

Top 25 of 303 custom software development firms based in Bulgaria, 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	dev.pro	Plovdiv	501-1,000	1,007	461
2	Nemetschek Bulgaria	Varna	201-500	325	247
3	Dreamix	Sofia	201-500	255	168
4	Freshcode	Sofia	51-200	147	54
5	NEW Line Technologies	Plovdiv	51-200	87	10
6	Plan A	n/a	11-50	50	32
7	Hacksoft	Sofia	51-200	47	28
8	OSI	Sofia	51-200	46	38
9	Denshi	Sofia	11-50	42	25
10	Orak Engineering	Sofia	51-200	40	1
11	Tumba Solutions	Sofia	11-50	39	8
12	Sirius Software	Sofia	11-50	31	17
13	Brain Stars Technology	Varna	11-50	29	18
14	Devision	Sofia	51-200	29	10
15	Icygen	Sofia	51-200	25	8
16	Donatix	Sofia	11-50	24	11
17	Amexis	Sofia	11-50	19	16
18	Kodin Soft	Sofia	11-50	18	13
19	Elders LTD	Plovdiv	11-50	18	11
20	DSI	Sofia	11-50	17	3
21	Veraio Tech	Sofia	11-50	15	1
22	Lexis Solutions	Sofia City	11-50	14	7
23	Silvae Technologies	Ruse	11-50	13	1
24	Intway	Varna	11-50	12	11
25	Innovasys LTD	Sofia	11-50	12	3

Showing 25 of 303 custom software development firms based in Bulgaria

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Custom software development firms based in Bulgaria at a glance

As of Aug 28, 2026

1-10Median size (employees)

SofiaLargest hub · 138 HQs

73Contacts with mobile numbers

7Emails re-verified in last 30 days

Companies by employee count

1-10

161

11-50

113

51-200

201-500

501-1,000

Custom software development firms by metro

Metro	Companies
Custom software development firms in Sofia	138
Custom software development firms in Plovdiv	27
Custom software development firms in Varna	26
Custom software development firms in Sofia City	26
Custom software development firms in Burgas	13
Custom software development firms in Veliko Tarnovo	7
Custom software development firms in Ruse	5

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 “custom software development firms”, with match quality audited by blind human judging, and headquartered in Bulgaria.
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; 7 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 custom software development firms are there based in Bulgaria?

There are 303 custom software development firms headquartered in Bulgaria as of August 2026 (RevenueBase).

What is the largest company on this list?

dev.pro, headquartered in Plovdiv, tops this list with the largest team on record.

Which city has the most custom software development firms?

Sofia leads with 138 headquartered companies, followed by Plovdiv (27) and Varna (26).

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 1,460 verified decision-maker contacts tracked across these 303 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.