Company lists · Data refreshed September 2026

Top 25 Contact center optimization software companies based in the United States

RevenueBase identified 868 contact center optimization software companies headquartered in the United States as of September 2026 and tracks 74,751 professional contacts across them, including 16,257 with verified work emails. Atlanta is the largest hub.

This list covers contact center optimization software companies 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 27, 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 27, 2026 86% judged on-target in blind review
868Companies
74,751Contacts tracked
16,257Verified emails
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The 25 largest contact center optimization software companies based in the United States

Ranked by team size
Top 25 of 868 contact center optimization software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to contact center optimization 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 evidenceSan Mateo, CA, United StatesHQ checked Sep 27, 20261,001-5,0007,034 contacts →

Indirect evidence

“Freshworks Inc.(NASDAQ: FRSH) is the AI-powered, unified service operations platform that is fast to deploy, intuitive to use, and enables every employee to be more productive.”

Source: RevenueBase Database · checked Sep 27, 2026
2Strong evidenceBelmont, CA, United StatesHQ checked Sep 27, 20265,001-10,0006,431 contacts →

Strong evidence

“RingCentral, Inc.(NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement…”

Source: RevenueBase Database · checked Sep 27, 2026
3Indirect evidenceNorcross, GA, United StatesHQ checked Sep 27, 202610001+4,785 contacts →

Indirect evidence

“At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.”

Source: RevenueBase Database · checked Sep 27, 2026
4Strong evidenceSan Diego, CA, United StatesHQ checked Sep 27, 20261,001-5,0004,561 contacts →

Strong evidence

“CCSI specializes in high‑performance, cost‑efficient contact center solutions supported by a world‑class bilingual workforce and state‑of‑the‑art infrastructure in Mexico.”

Source: RevenueBase Database · checked Sep 27, 2026
5Strong evidenceDallas, TX, United StatesHQ checked Sep 27, 20265,001-10,0004,342 contacts →

Strong evidence

“With a fresh name and decades of contact center expertise, we’re dedicated to collaborative partnerships, understanding your unique needs, and tailoring solutions for an enhanced…”

Source: RevenueBase Database · checked Sep 27, 2026
6Strong evidenceMelville, NY, United StatesHQ checked Sep 27, 20265,001-10,0003,852 contacts →

Strong evidence

“Verint helps you deliver AI outcomes now to solve your most pressing CX automation challenges in the contact center and beyond.”

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 20261,001-5,0003,122 contacts →

Partial evidence

“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.”

Source: RevenueBase Database · checked Sep 27, 2026
8Strong evidenceAkron, OH, United StatesHQ checked Sep 27, 20261,001-5,0001,764 contacts →

Strong evidence

“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceWaco, TX, United StatesHQ checked Sep 27, 20265,001-10,0001,710 contacts →

Partial evidence

“Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceMahwah, NJ, United StatesHQ checked Sep 27, 20261,001-5,0001,536 contacts →

Indirect evidence

“DialAmerica is now Aucera.”

Source: RevenueBase Database · checked Sep 27, 2026
11Strong evidenceWashington, DC, United StatesHQ checked Sep 27, 20261,001-5,0001,334 contacts →

Strong evidence

“Afiniti is an AI-native company and the global leader in Outcome Orchestration, where we bring simplicity, transparency, and measurable results to complex contact centers.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceDoral, FL, United StatesHQ checked Sep 27, 20261,001-5,000902 contacts →

Partial evidence

“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceHorsham, PA, United StatesHQ checked Sep 27, 2026501-1,000883 contacts →

Indirect evidence

“If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceBoulder, CO, United StatesHQ checked Sep 27, 20261,001-5,000878 contacts →

Indirect evidence

“Decades of expertise distilled into innovative workforce tools.”

Source: RevenueBase Database · checked Sep 27, 2026
15Strong evidenceChicago, IL, United StatesHQ checked Sep 27, 202651-200567 contacts →

Strong evidence

“Call Center Studio is an AI-powered, cloud-based contact center software that redefines how businesses engage with their customers.”

Source: RevenueBase Database · checked Sep 27, 2026
16Strong evidenceHouston, TX, United StatesHQ checked Sep 27, 2026501-1,000561 contacts →

Strong evidence

“We build fully managed call centers: Software build outs Hiring Training Integrations”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceSalisbury, NC, United StatesHQ checked Sep 27, 2026501-1,000542 contacts →

Indirect evidence

“We are customer service experts.”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceColumbus, OH, United StatesHQ checked Sep 27, 20261,001-5,000515 contacts →

Partial evidence

“ContactUs Communications is a U.S.”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceBristol, CT, United StatesHQ checked Sep 27, 20261,001-5,000513 contacts →

Partial evidence

“American Customer Care specializes in providing individualized contact with your customers.”

Source: RevenueBase Database · checked Sep 27, 2026
20Strong evidenceMargate, FL, United StatesHQ checked Sep 27, 20261,001-5,000487 contacts →

Strong evidence

“Global Response is The Brand Contact Center.”

Source: RevenueBase Database · checked Sep 27, 2026
21Strong evidenceAtlanta, GA, United StatesHQ checked Sep 27, 20261,001-5,000478 contacts →

Strong evidence

“Alvaria CX, the global leader in contact center solutions, emerged from the 2021 merger of Noble Systems and Aspect, bringing over 50 years of CX innovation.”

Source: RevenueBase Database · checked Sep 27, 2026
22Strong evidenceSanta Ana, CA, United StatesHQ checked Sep 27, 2026501-1,000431 contacts →

Strong evidence

“About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceTulsa, United StatesHQ checked Sep 27, 2026n/a377 contacts →

Indirect evidence

“iPacesetters”

Source: RevenueBase Database · checked Sep 27, 2026
24Strong evidenceBloomington, MN, United StatesHQ checked Sep 27, 20261,001-5,000354 contacts →

Strong evidence

“For over 35 years, The Connection has made a name for ourselves becoming one of the top industry partners to Fortune 500 companies looking to outsource their contact center…”

Source: RevenueBase Database · checked Sep 27, 2026
25Strong evidenceSioux Falls, SD, United StatesHQ checked Sep 27, 20261,001-5,000329 contacts →

Strong evidence

“Five Star Call Centers is a onshore and nearshore contact center outsourcer where we deliver outrageously amazing customer experiences for our clients and their customers.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 868 contact center optimization software companies based in the United States

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Contact center optimization software companies based in the United States at a glance

As of Sep 27, 2026
21.7%Verified-email coverage
86.1Average contacts per company
11-50Median size (employees)
3.1%Largest-city concentration · Atlanta
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
252
11-50
249
51-200
204
201-500
67
501-1,000
45
1,001-5,000
37
5,001-10,000
9
10001+
5

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 868 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 contact center optimization 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 the United States whose own description of what they do matches “contact center optimization 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 contact center optimization 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 contact center optimization software companies, 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, 16,257 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 27, 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.

Contact center optimization software companies by metro

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 contact center optimization 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 contact center optimization software companies are there based in the United States?

RevenueBase identified 868 contact center optimization software companies 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?

Freshworks, headquartered in San Mateo, tops this list with the largest team on record.

Which city has the most contact center optimization software companies?

Atlanta leads with 27 headquartered companies, followed by New York (24) and Miami (23).

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 16,257 verified decision-maker contacts tracked across these 868 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 27, 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.