Company lists · Data refreshed September 2026

Top 25 Enterprise IT infrastructure companies based in Johannesburg, South Africa

Name: Enterprise IT infrastructure companies based in Johannesburg, South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 12, 2026 124 companies tracked

RevenueBase identified 124 company matches for enterprise IT infrastructure companies associated with Johannesburg, South Africa as of September 2026 and tracks 4,946 professional contacts across them, including 1,375 with verified work emails and 139 with mobile numbers. Across South Africa, Johannesburg is the largest hub for this category.

This list covers company matches for enterprise IT infrastructure companies associated with Johannesburg, South Africa, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 12, 2026 How this list was built

124Companies

4,946Contacts tracked

1,375Verified emails

139Mobile numbers

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The 25 largest enterprise IT infrastructure companies based in Johannesburg, South Africa

Ranked by team size

Top 25 of 124 company matches for enterprise IT infrastructure companies based in Johannesburg, South Africa, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Altron Digital Business	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	1,001-5,000	2,877 contacts →
	Exact match “Operate, optimise, and transform with the IT services company that offers the enterprise-grade solutions needed to grow your business.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
2	Reflex	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	51-200	207 contacts →
	Exact match “At Reflex, we combine expertise with a client-centric approach to deliver technology solutions that are both powerful and easy to use.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
3	Three6five	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	201-500	140 contacts →
	Exact match “At three6five, IT is what we do best.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
4	Aves Cyber Security	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	51-200	62 contacts →
	Exact match “AVeS Cyber Security forms part of the AVeS Cyber International group of companies.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
5	Accelerit Technologies	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	51-200	47 contacts →
	Exact match “Accelerit Technologies PTY LTD is an IT Services provider with a broad range of technology services offerings.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
6	RT Systems PTY LTD	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	44 contacts →
	Exact match “Established in to cater for the growing need of many businesses for the continuous monitoring of their IT support infrastructure.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
7	Phungela	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	51-200	44 contacts →
	Exact match “Phungela is an ISO certified, award-winning Enterprise Technology and Digital Transformation firm based in South Africa.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
8	Innovation HUB Group	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	35 contacts →
	Exact match “Innovation Hub Group is a strategic IT services and consulting partner helping businesses operate more securely, efficiently, and intelligently.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
9	Techaccess	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	31 contacts →
	Exact match “TechAccess is a services and solutions orientated company in the IT sector with a strong focus on the data centre industry.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
10	Vaxowave	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	24 contacts →
	Exact match “We are a digital technology company specialising in multi-cloud solutions, technology transformations and consulting services.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
11	Wires & Wireless	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	24 contacts →
	Exact match “Since 2001, Wires & Wireless has specialised in the design, delivery and long-term support of critical IT infrastructure environments across South Africa.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
12	B2e Technologies	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	23 contacts →
	Exact match “Beginning 2 End Technologies (PTY) Ltd (B2E Technologies) is a leading technical and skills company that applies turn key IT solutions to its customers.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
13	Infoprotect SA	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	22 contacts →
	Exact match “Infoprotect is a trusted ICT Solution Provider specializing in Managed IT Services, from End-Points to Cloud Infrastructure, Cybersecurity to Compliance Management, and everything…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
14	Smart Business Systems PTY LTD	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	20 contacts →
	Exact match “Smart Business Systems (SBS) is a full-service IT and technology partner helping organisations modernise, connect, and operate smarter.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
15	Coresol	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	51-200	18 contacts →
	Exact match “Modern organisations run on complex infrastructure.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
16	Vision Network Solutions	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	17 contacts →
	Exact match “Established in VNS is a leading provider of IT solutions, products and services to businesses and individuals in South Africa.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
17	Myriad	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	201-500	16 contacts →
	Exact match “Myriad is an operator-led digital infrastructure group that works alongside the businesses it backs, sharing fibre, wireless, software, and managed services to help them grow…” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
18	Greensoft Solutions PTY LTD	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	16 contacts →
	Exact match “GSS is a proudly South African empowerment company in the information and communications (ICT) sector of the South African economy.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
19	Link UP ICT & Cyber Security	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	15 contacts →
	Exact match “Established in 2007, Link Up ICT provides managed IT services with superior technology solutions.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
20	Sybaweb	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	14 contacts →
	Exact match “SybaWeb’s IT Infrastructure Management Solution aligns your company’s information technology with its core business requirements.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
21	Daisy Energy	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	14 contacts →
	Exact match “Daisy Energy is a dynamic team of professionals that is dedicated to bringing custom innovation, expertise and infrastructure to Industry within Southern Africa.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
22	Intellitech Systems PTY LTD	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	13 contacts →
	Exact match “We are a passionate and driven IT Infrastructure company with specialist skills in Cloud, Networking, Datacenter, Security and Managed Support Services.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
23	Agera Group	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	51-200	11 contacts →
	Exact match “Agera Group is a turnkey ICT infrastructure solutions provider built on the expertise of highly experienced professionals with a strong track record in the IT industry.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
24	Chronologic	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	11 contacts →
	Exact match “At Chronologic, we help ambitious businesses turn technology into a strategic advantage.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase
25	Swiss Systems SA	Exact match	Johannesburg, South AfricaHQ recorded Sep 12, 2026	11-50	9 contacts →
	Exact match “Most South African MSPs resell other people's software.” Recorded in the RevenueBase company graph · Sep 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “enterprise IT infrastructure companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 124 enterprise IT infrastructure companies based in Johannesburg, South Africa

See the full list, filter by size, metro and specialty, and access 1,375 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Enterprise IT infrastructure companies based in Johannesburg, South Africa at a glance

As of Sep 12, 2026

27.8%Verified-email coverage

2.8%Mobile-number coverage

39.9Average contacts per company

11-50Median size (employees)

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

1,1350–30

22931–60

861–90

190–180

2180+

Company record updated

Median 80.0d

00–30

1,14431–60

3,10361–90

54790–180

152180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Johannesburg, South Africa whose business descriptions match “enterprise IT infrastructure companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,375 professional contacts with verified work emails across the full matched dataset. 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 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Enterprise IT infrastructure companies by metro in South Africa

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “enterprise IT infrastructure companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many enterprise IT infrastructure companies are there based in Johannesburg, South Africa?

RevenueBase identified 124 company matches for enterprise IT infrastructure companies associated with Johannesburg, South Africa as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Altron Digital Business tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in South Africa has the most enterprise IT infrastructure companies?

Johannesburg leads South Africa with 134 company records, followed by Cape Town (72) and Pretoria (33).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,375 professional contacts with verified work emails tracked across these 124 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 12, 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 SmartSearch, 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.