Company lists · Data refreshed September 2026

Top 25 Telecom software developers based in the United States

Name: Telecom software developers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 235 companies tracked

RevenueBase identified 235 telecom software developers headquartered in the United States as of September 2026 and tracks 50,896 professional contacts across them, including 20,284 with verified work emails. Austin is the largest hub.

This list covers telecom software developers headquartered in the United States, 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 29, 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 29, 2026 86% judged on-target in blind review

235Companies

50,896Contacts tracked

20,284Verified emails

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The 25 largest telecom software developers based in the United States

Ranked by team size

Top 25 of 235 telecom software developers based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to telecom software developers: 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	Amdocs	Indirect evidence	Chesterfield, MO, United StatesHQ checked Sep 29, 2026	10001+	39,863 contacts →
	Indirect evidence “Who are we?” Source: RevenueBase Database · checked Sep 29, 2026
2	CSG	Indirect evidence	Englewood, CO, United StatesHQ checked Sep 29, 2026	5,001-10,000	5,874 contacts →
	Indirect evidence “CSG is a leader in innovative customer engagement, revenue management and payments solutions that make ordinary customer experiences extraordinary.” Source: RevenueBase Database · checked Sep 29, 2026
3	PCT International, INC	Partial evidence	Tempe, AZ, United StatesHQ checked Sep 29, 2026	201-500	344 contacts →
	Partial evidence “Innovation for the Last Mile® PCT International, Inc is at the forefront of an evolving industry with superior telecom solutions.” Source: RevenueBase Database · checked Sep 29, 2026
4	Turning Point Global Solutions	Partial evidence	Rockville, MD, United StatesHQ checked Sep 29, 2026	201-500	192 contacts →
	Partial evidence “Turning Point Global Solutions is a CMMI DEV 3.0 Maturity Level 5 certified Software Engineering Services company that specializes in Software Development, Systems Integration…” Source: RevenueBase Database · checked Sep 29, 2026
5	Macc MID America Computer Corporation	Partial evidence	Blair, NE, United StatesHQ checked Sep 29, 2026	51-200	189 contacts →
	Partial evidence “Mid America Computer Corporation (MACC) offers BSS/OSS solutions designed for today's telecommunications providers.” Source: RevenueBase Database · checked Sep 29, 2026
6	Alepo Technologies INC	Partial evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	201-500	166 contacts →
	Partial evidence “Alepo makes next-generation Gen AI transformation opportunities for telcos a reality, delivering advanced software solutions and services that enable communications service…” Source: RevenueBase Database · checked Sep 29, 2026
7	Promptlink Communications, INC	Partial evidence	Oceanside, CA, United StatesHQ checked Sep 29, 2026	51-200	124 contacts →
	Partial evidence “Promptlink Communications is an innovative company with a focus on the development and deployment of software tools for broadband service providers.” Source: RevenueBase Database · checked Sep 29, 2026
8	Innovative Systems	Partial evidence	Mitchell, SD, United StatesHQ checked Sep 29, 2026	201-500	117 contacts →
	Partial evidence “Innovative Systems is a mission-critical enterprise software solution that enables independent service providers to seamlessly manage their business, deliver modern network…” Source: RevenueBase Database · checked Sep 29, 2026
9	Glow Services Corp	Partial evidence	Miami, NY, United StatesHQ checked Sep 29, 2026	51-200	100 contacts →
	Partial evidence “Glow is a global technology company serving the telecom vertical, providing leading SaaS, managed service, & embedded finance revenue generating solutions, as well strategic…” Source: RevenueBase Database · checked Sep 29, 2026
10	Telgoo5	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	99 contacts →
	Indirect evidence “An end-to-end cloud based SaaS platform that powers Cable and Internet Service Providers (MSP’s), Mobile Operators (MNO’s), Mobile Virtual Network Operators (MVNO), Enablers…” Source: RevenueBase Database · checked Sep 29, 2026
11	Iquall Networks	Strong evidence	Miami, FL, United StatesHQ checked Sep 29, 2026	51-200	86 contacts →
	Strong evidence “Iquall Networks is a telecom-oriented software company specializing in Network Automation.Since 2008.” Source: RevenueBase Database · checked Sep 29, 2026
12	Skyvera	Partial evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	51-200	86 contacts →
	Partial evidence “Who We Are Formerly known as Zephyrtel, Skyvera is now a subsidiary of TelcoDR that operates and transforms the telco software companies that TelcoDR acquires.” Source: RevenueBase Database · checked Sep 29, 2026
13	Telesys Software, INC	Strong evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	51-200	67 contacts →
	Strong evidence “teleSys Software is the premier provider of advanced Telecommunications solutions for the next generation LTE Signaling Networks, providing open systems hardware and software.” Source: RevenueBase Database · checked Sep 29, 2026
14	Congero Technology Group	Indirect evidence	Reston, VA, United StatesHQ checked Sep 29, 2026	51-200	64 contacts →
	Indirect evidence “Congero Technology Group was founded on one truth: technology and innovation have the power to drive revenue.” Source: RevenueBase Database · checked Sep 29, 2026
15	Vensi, INC	Indirect evidence	Buffalo Grove, IL, United StatesHQ checked Sep 29, 2026	51-200	61 contacts →
	Indirect evidence “Established in 2006, Vensi, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
16	Swampfox Technologies	Partial evidence	Columbia, SC, United StatesHQ checked Sep 29, 2026	51-200	58 contacts →
	Partial evidence “Swampfox Technologies is a modern software, solutions and services company focused on empowering amazing customer journeys for the enterprise Contact Center.” Source: RevenueBase Database · checked Sep 29, 2026
17	ZLINQ	Strong evidence	Denver, CO, United StatesHQ checked Sep 29, 2026	51-200	54 contacts →
	Strong evidence “zLinq is a telecom management software and services company that helps enterprises to manage, optimize, and buy Voice & Data Connectivity, Unified Communications and Contact…” Source: RevenueBase Database · checked Sep 29, 2026
18	Tecom Group	Strong evidence	Melbourne, FL, United StatesHQ checked Sep 29, 2026	51-200	52 contacts →
	Strong evidence “Tecom Group is a leading software developer in broadcasting and telecommunications.” Source: RevenueBase Database · checked Sep 29, 2026
19	Commsoft	Indirect evidence	Troy, NY, United StatesHQ checked Sep 29, 2026	51-200	46 contacts →
	Indirect evidence “In an IT world in which quality, experience and knowhow can be hard to find, CommSoft stands out amongst the crowd.” Source: RevenueBase Database · checked Sep 29, 2026
20	Nordicom Technologies	Indirect evidence	Novi, MI, United StatesHQ checked Sep 29, 2026	51-200	44 contacts →
	Indirect evidence “Nordicom Technologies helps enable and deploy communications and technology solutions that change the way our customers work and help them drive tangible business outcomes.” Source: RevenueBase Database · checked Sep 29, 2026
21	Kansys	Partial evidence	Olathe, KS, United StatesHQ checked Sep 29, 2026	51-200	36 contacts →
	Partial evidence “Kansys is a provider of billing software and services that help communications and enterprise businesses monetize complex business at scale.” Source: RevenueBase Database · checked Sep 29, 2026
22	I2u Systems, INC	Partial evidence	Missouri City, TX, United StatesHQ checked Sep 29, 2026	51-200	35 contacts →
	Partial evidence “I2U Systems is a specialist supplier of software and services to digital and communications service providers, using cutting-edge technology to create intuitive, flexible and…” Source: RevenueBase Database · checked Sep 29, 2026
23	Keycore International	Strong evidence	Miami, FL, United StatesHQ checked Sep 29, 2026	11-50	30 contacts →
	Strong evidence “KeyCore International is a software factory, offering telecommunications and information technology solutions.” Source: RevenueBase Database · checked Sep 29, 2026
24	G Business Systems, LLC	Partial evidence	Shamong, NJ, United StatesHQ checked Sep 29, 2026	1-10	30 contacts →
	Partial evidence “G Business Systems specializes in custom software solutions to meet the specific needs of clients ranging from small businesses to multi-national corporations.” Source: RevenueBase Database · checked Sep 29, 2026
25	Integratouch	Indirect evidence	East Rochester, NY, United StatesHQ checked Sep 29, 2026	51-200	29 contacts →
	Indirect evidence “IntegraTouch, LLC, founded in 2002, is a rapid-growth, profitable, solutions technology company.” Source: RevenueBase Database · checked Sep 29, 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: telecom software developers. 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 telecom software developers.
Partial evidence: Its own public description names part of telecom software developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom software developers. 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 235 telecom software developers based in the United States

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Telecom software developers based in the United States at a glance

As of Sep 29, 2026

39.9%Verified-email coverage

216.6Average contacts per company

11-50Median size (employees)

3.0%Largest-city concentration · Austin

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 235 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 telecom software developers, 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 the United States whose own description of what they do matches “telecom software developers”. 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 telecom software developers), 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 telecom software developers, and records with no verified work email. Companies headquartered outside United States 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, 20,284 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 29, 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 telecom software developers, 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 telecom software developers are there based in the United States?

RevenueBase identified 235 telecom software developers headquartered in the United States 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?

Amdocs, headquartered in Chesterfield, tops this list with the largest team on record.

Which city has the most telecom software developers?

Austin leads with 7 headquartered companies, followed by Dallas (7) and New York (7).

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 20,284 verified decision-maker contacts tracked across these 235 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 29, 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.