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Lookalikes · Data refreshed November 2026

14 1call Direct lookalikes

Compiled by the RevenueBase Data Team Data refreshed Nov 4, 2026 92 matching companies

Looking for 1call Direct lookalikes, 1call Direct competitors or 1call Direct alternatives? The RevenueBase company graph holds 92 companies that do what 1call Direct does, matched at 85%+ measured description similarity (RevenueBase, November 2026). The 14 largest are ranked below by team size; across all 92 matches RevenueBase tracks 1,252 professional contacts, including 101 with verified work emails.

Similarity is measured on what companies actually do, from their business descriptions rather than industry codes, and is shown per row as a percentage. This page keeps only companies at 85%+ measured similarity to 1call Direct and ranks them by company size. Data current as of November 4, 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 Similarity shown on every row Refreshed Nov 4, 2026 Match quality audited by blind human judging

Reference company

1call Direct

“Established in 1988 in London as Hotlines Telemarketing Ltd, the Glasgow branch (which was established in June rebranded as 1Call Direct in October 2003.”

51-200Employees
25Contacts tracked
1Verified emails
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The 14 largest 1call Direct competitors and alternatives

Ranked by team size
Top 14 of 92 companies matching 1call Direct at 85%+ description similarity, ranked by team size. Similarity is each company's measured match to 1call Direct (100% = identical). Data refreshed Nov 4, 2026.
#CompanyHQEmployeesSimilarityVerified emails
1Trualliant Business Process Outsourcing INCIloilo City Iloilo, PH1,001-5,00085%68 contacts →
2The Heller Group, INCGuatemala City, GT51-20090%1 contacts →
3SalesgammaNorth York, CA11-5086%4 contacts →
4SLM ConnectManchester, GB201-50085%1 contacts →
5Marketing King Online PVT LTDNew Delhi, IN11-5085%1 contacts →
6Itacall GroupBassano Del Grappa, IT51-20086%5 contacts →
7Elevate OCOrange, US11-5085%4 contacts →
8Sympatel MacedoniaBitola Bitola, MK51-20085%2 contacts →
9株式会社emoooveJing, JP11-5085%2 contacts →
10Lead-Driven LLCDallas, US1-1088%1 contacts →
11Sales Elevator Communications GmbhLuneburg, DE11-5085%4 contacts →
12Access Assurance GroupChapel Hill, US1-1085%3 contacts →
13Maxteam Deutschland GmbhHennef, DE51-20086%2 contacts →
14Pitchpipe GmbhLeipzig, DE11-5086%1 contacts →

Showing the 14 largest of 92 similar companies

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How similarity works

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.
Matching
Companies are matched on what they actually do, as described in their own business descriptions, never on shared industry codes. The list keeps only matches at 85%+ measured similarity to 1call Direct, and match quality is audited by blind human judging. Read the full methodology.
Ranking
Team size, largest first, among the matched companies: companies are ordered by the number of professionals RevenueBase tracks at each one. Each row also shows its measured similarity to 1call Direct as a percentage.
Verification
Contact records re-verify on a rolling cadence rather than being scraped once and left to decay; each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 4, 2026. Lists refresh periodically as the graph is re-checked.

Frequently asked

What are 1call Direct lookalikes?

1call Direct lookalikes are companies that closely resemble what 1call Direct does and sells, based on each company's own business description. The table above ranks the closest matches by company size, with each company's similarity to 1call Direct shown as a percentage.

What companies are similar to 1call Direct?

The largest companies similar to 1call Direct are Trualliant Business Process Outsourcing INC, The Heller Group, INC, Salesgamma and SLM Connect. The table above shows the 14 largest of the 92 matched companies, with each row's similarity shown as a percentage.

How is similarity measured?

Similarity scores how closely a company's business, as described in its own words, matches 1call Direct's, shown as a percentage (100% = an identical description). The list keeps companies at 85% or above and ranks them by team size.

How do I get contacts at these companies?

A free RevenueBase account lets you run this exact search and work the top matches, verified emails and direct dials included. Upgrading unlocks the 101 verified emails and direct dials tracked across all 92 matched companies.

Who are 1call Direct's biggest competitors?

The largest 1call Direct competitors by measured business-description similarity are Trualliant Business Process Outsourcing INC, The Heller Group, INC, Salesgamma and SLM Connect. Every company here does what 1call Direct does at 85%+ similarity, ranked by team size.

What are the best 1call Direct alternatives?

The closest 1call Direct alternatives are the companies whose own business descriptions match 1call Direct's most closely, shown above with each one's similarity as a percentage and ranked by team size.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 4, 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.

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