Company lists · Data refreshed September 2026

Top 19 Telecommunication software companies based in Türkiye

RevenueBase identified 36 telecommunication software companies headquartered in Türkiye as of September 2026 and tracks 766 professional contacts across them, including 338 with verified work emails. Istanbul is the largest hub.

This list covers telecommunication software companies headquartered in Türkiye, 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 14, 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 14, 2026 86% judged on-target in blind review
36Companies
766Contacts tracked
338Verified emails
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The 19 largest telecommunication software companies based in Türkiye

Ranked by team size
Top 19 of 36 telecommunication software companies based in Türkiye, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunication software companies: 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
1Indirect evidenceEsenler, TürkiyeHQ checked Sep 14, 2026201-500402 contacts →

Indirect evidence

“i2i Systems is an international information technology company that specializes in developing innovative ideas and solutions.”

Source: RevenueBase Database · checked Sep 14, 2026
2Partial evidenceSarıyer, TürkiyeHQ checked Sep 14, 202611-5063 contacts →

Partial evidence

“Defne, is a leading global provider of telecom solutions, software products and services for communications networks.”

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceIzmir, TürkiyeHQ checked Sep 14, 2026201-50035 contacts →

Indirect evidence

“EVB, yurtiçi ve yurtdışında bulunan partnerlerine bilişim, enerji ve iletişim sektörlerinde hizmet vermektedir.”

Source: RevenueBase Database · checked Sep 14, 2026
4Strong evidenceİstanbul, TürkiyeHQ checked Sep 14, 202611-5028 contacts →

Strong evidence

“NGSS is a software company specialized in network telecommunications, especially on the OSS/BSS side, offers specialized products and services for Telecom service providers and…”

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceAnkara, TürkiyeHQ checked Sep 14, 202611-5027 contacts →

Indirect evidence

“NISH Business Solutions is a technology startup focusing on billing, charging and decision support systems projects in telecomunications industry.”

Source: RevenueBase Database · checked Sep 14, 2026
6Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 202611-5025 contacts →

Indirect evidence

“Invio, internet teknolojileri ve mobil uygulamalar alanında faaliyet gösteren bir teknoloji şirketidir.”

Source: RevenueBase Database · checked Sep 14, 2026
7Partial evidenceİstanbul, TürkiyeHQ checked Sep 14, 202611-5025 contacts →

Partial evidence

“Procom Technology is founded in Istanbul, Turkey by professionals with their long-standing IT and telecommunication sector experience.”

Source: RevenueBase Database · checked Sep 14, 2026
8Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 202611-5020 contacts →

Indirect evidence

“Sonitel, Turkey's 360° Customer Experience Platform Sonitel is a Turkey-based customer experience platform that unifies contact center, IP and cloud PBX, omnichannel…”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceİstanbul, TürkiyeHQ checked Sep 14, 202651-20019 contacts →

Indirect evidence

“DNEXT is a revolutionary digital customer engagement platform transforming businesses into next level digital operators.”

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceIstanbul, TürkiyeHQ checked Sep 14, 202611-5017 contacts →

Partial evidence

“Techone is a software solutions company that has customer satisfaction as a primary focus, has worked in all levels of the telco and software industry for many years, and aims to…”

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceİstanbul, TürkiyeHQ checked Sep 14, 202611-5011 contacts →

Indirect evidence

“RETFOX is a technology company focused on digital transformation solutions.”

Source: RevenueBase Database · checked Sep 14, 2026
12Partial evidenceIstanbul, TürkiyeHQ checked Sep 14, 202611-509 contacts →

Partial evidence

“ACTS is a telecommunication service provider that focus on international voice carrier services.”

Source: RevenueBase Database · checked Sep 14, 2026
13Partial evidenceAtașehir, TürkiyeHQ checked Sep 14, 20261-108 contacts →

Partial evidence

“Merlin Yazılım has been delivering high-value telecom, contact center, and enterprise communication software solutions since 2011.”

Source: RevenueBase Database · checked Sep 14, 2026
14Partial evidenceİstanbul, TürkiyeHQ checked Sep 14, 20261-107 contacts →

Partial evidence

“Ses Data İletişim Hizmetleri has been operating in the telecommunications industry since 2012.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 202611-506 contacts →

Indirect evidence

“TrioWorx İş Çözümleri, başta Telekom ve Finans sektörlerinde olmak üzere birçok yazılım alanında değerli tecrübeler kazanmış bir ekip tarafından kurulmuştur.”

Source: RevenueBase Database · checked Sep 14, 2026
16Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 202611-504 contacts →

Indirect evidence

“ProTim kadrosu uzun yillar Ericsson Turkiye' nin kadrosunda yer almis, telekomünikasyon sektöründe ileri derecede bilgi, tecrübeye sahip genç ve dinamik bir olusumdur.”

Source: RevenueBase Database · checked Sep 14, 2026
17Indirect evidenceDenizli, TürkiyeHQ checked Sep 14, 202611-504 contacts →

Indirect evidence

“2004 yılında kurulan Tekobel Teknoloji, 10 yılı aşkın sektör deneyimi olan iyi eğitimli mühendisler tarafından yönetilmektedir.”

Source: RevenueBase Database · checked Sep 14, 2026
18Indirect evidenceIstanbul, TürkiyeHQ checked Sep 14, 202611-503 contacts →

Indirect evidence

“PhonoClick is an Istanbul-based technology company specializing in research and development of network-based customer interaction solutions for a wide range of businesses…”

Source: RevenueBase Database · checked Sep 14, 2026
19Strong evidenceIstanbul, TürkiyeHQ checked Sep 14, 20261-102 contacts →

Strong evidence

“Softroyal is a company established to develop software for telecommunication industry.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 19 of 36 telecommunication software companies based in Türkiye

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Telecommunication software companies based in Türkiye at a glance

As of Sep 14, 2026
44.1%Verified-email coverage
21.3Average contacts per company
11-50Median size (employees)
55.6%Largest-city concentration · Istanbul
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
11
11-50
19
51-200
4
201-500
2

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 36 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 telecommunication software companies, 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 Türkiye whose own description of what they do matches “telecommunication software companies”. 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 telecommunication software companies), 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 telecommunication software companies, and records with no verified work email. Companies headquartered outside Türkiye 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, 338 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 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.

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 telecommunication software companies, 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 telecommunication software companies are there based in Türkiye?

RevenueBase identified 36 telecommunication software companies headquartered in Türkiye 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?

I2i Systems, headquartered in Esenler, tops this list with the largest team on record.

Which city has the most telecommunication software companies?

Istanbul leads with 20 headquartered companies, followed by Ankara (1) and Atasehir (1).

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 338 verified decision-maker contacts tracked across these 36 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 14, 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.