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 enterprise IT infrastructure companies headquartered in 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. Johannesburg is the largest hub.

This list covers enterprise IT infrastructure companies headquartered in Johannesburg, South Africa, 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 12, 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 12, 2026 86% judged on-target in blind review

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 enterprise IT infrastructure companies based in Johannesburg, South Africa, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise IT infrastructure 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Altron Digital Business	Strong evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	1,001-5,000	2,877 contacts →
	Strong evidence “Operate, optimise, and transform with the IT services company that offers the enterprise-grade solutions needed to grow your business.” Source: RevenueBase Database · checked Sep 12, 2026
2	Reflex	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	51-200	207 contacts →
	Indirect evidence “At Reflex, we combine expertise with a client-centric approach to deliver technology solutions that are both powerful and easy to use.” Source: RevenueBase Database · checked Sep 12, 2026
3	Three6five	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	201-500	140 contacts →
	Partial evidence “At three6five, IT is what we do best.” Source: RevenueBase Database · checked Sep 12, 2026
4	Aves Cyber Security	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	51-200	62 contacts →
	Indirect evidence “AVeS Cyber Security forms part of the AVeS Cyber International group of companies.” Source: RevenueBase Database · checked Sep 12, 2026
5	Accelerit Technologies	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	51-200	47 contacts →
	Partial evidence “Accelerit Technologies PTY LTD is an IT Services provider with a broad range of technology services offerings.” Source: RevenueBase Database · checked Sep 12, 2026
6	RT Systems PTY LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	44 contacts →
	Strong evidence “Established in to cater for the growing need of many businesses for the continuous monitoring of their IT support infrastructure.” Source: RevenueBase Database · checked Sep 12, 2026
7	Phungela	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	51-200	44 contacts →
	Partial evidence “Phungela is an ISO certified, award-winning Enterprise Technology and Digital Transformation firm based in South Africa.” Source: RevenueBase Database · checked Sep 12, 2026
8	Innovation HUB Group	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	35 contacts →
	Partial evidence “Innovation Hub Group is a strategic IT services and consulting partner helping businesses operate more securely, efficiently, and intelligently.” Source: RevenueBase Database · checked Sep 12, 2026
9	Techaccess	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	31 contacts →
	Partial evidence “TechAccess is a services and solutions orientated company in the IT sector with a strong focus on the data centre industry.” Source: RevenueBase Database · checked Sep 12, 2026
10	Vaxowave	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	24 contacts →
	Indirect evidence “We are a digital technology company specialising in multi-cloud solutions, technology transformations and consulting services.” Source: RevenueBase Database · checked Sep 12, 2026
11	Wires & Wireless	Strong evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	24 contacts →
	Strong evidence “Since 2001, Wires & Wireless has specialised in the design, delivery and long-term support of critical IT infrastructure environments across South Africa.” Source: RevenueBase Database · checked Sep 12, 2026
12	B2e Technologies	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	23 contacts →
	Partial evidence “Beginning 2 End Technologies (PTY) Ltd (B2E Technologies) is a leading technical and skills company that applies turn key IT solutions to its customers.” Source: RevenueBase Database · checked Sep 12, 2026
13	Infoprotect SA	Strong evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	22 contacts →
	Strong evidence “Infoprotect is a trusted ICT Solution Provider specializing in Managed IT Services, from End-Points to Cloud Infrastructure, Cybersecurity to Compliance Management, and everything…” Source: RevenueBase Database · checked Sep 12, 2026
14	Smart Business Systems PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	20 contacts →
	Partial evidence “Smart Business Systems (SBS) is a full-service IT and technology partner helping organisations modernise, connect, and operate smarter.” Source: RevenueBase Database · checked Sep 12, 2026
15	Coresol	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	51-200	18 contacts →
	Partial evidence “Modern organisations run on complex infrastructure.” Source: RevenueBase Database · checked Sep 12, 2026
16	Vision Network Solutions	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	17 contacts →
	Partial evidence “Established in VNS is a leading provider of IT solutions, products and services to businesses and individuals in South Africa.” Source: RevenueBase Database · checked Sep 12, 2026
17	Myriad	Strong evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	201-500	16 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 12, 2026
18	Greensoft Solutions PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	16 contacts →
	Indirect evidence “GSS is a proudly South African empowerment company in the information and communications (ICT) sector of the South African economy.” Source: RevenueBase Database · checked Sep 12, 2026
19	Link UP ICT & Cyber Security	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	15 contacts →
	Partial evidence “Established in 2007, Link Up ICT provides managed IT services with superior technology solutions.” Source: RevenueBase Database · checked Sep 12, 2026
20	Sybaweb	Strong evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	14 contacts →
	Strong evidence “SybaWeb’s IT Infrastructure Management Solution aligns your company’s information technology with its core business requirements.” Source: RevenueBase Database · checked Sep 12, 2026
21	Daisy Energy	Partial evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	14 contacts →
	Partial evidence “Daisy Energy is a dynamic team of professionals that is dedicated to bringing custom innovation, expertise and infrastructure to Industry within Southern Africa.” Source: RevenueBase Database · checked Sep 12, 2026
22	Intellitech Systems PTY LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	13 contacts →
	Strong evidence “We are a passionate and driven IT Infrastructure company with specialist skills in Cloud, Networking, Datacenter, Security and Managed Support Services.” Source: RevenueBase Database · checked Sep 12, 2026
23	Agera Group	Strong evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	51-200	11 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 12, 2026
24	Chronologic	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	11 contacts →
	Indirect evidence “At Chronologic, we help ambitious businesses turn technology into a strategic advantage.” Source: RevenueBase Database · checked Sep 12, 2026
25	Swiss Systems SA	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 12, 2026	11-50	9 contacts →
	Indirect evidence “Most South African MSPs resell other people's software.” Source: RevenueBase Database · checked Sep 12, 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: enterprise IT infrastructure companies. 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 enterprise IT infrastructure companies.
Partial evidence: Its own public description names part of enterprise IT infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise IT infrastructure companies. 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 124 enterprise IT infrastructure companies based in Johannesburg, South Africa

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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)

108.1%Largest-city concentration · Johannesburg

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among enterprise IT infrastructure 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 Johannesburg, South Africa whose own description of what they do matches “enterprise IT infrastructure 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 enterprise IT infrastructure 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 enterprise IT infrastructure companies, and records with no verified work email. Companies headquartered outside Johannesburg 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, 1,375 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 12, 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.

Enterprise IT infrastructure companies by metro in South Africa

Enterprise IT infrastructure companies in Johannesburg134
Enterprise IT infrastructure companies in Cape Town72
Enterprise IT infrastructure companies in Pretoria33

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

RevenueBase identified 124 enterprise IT infrastructure companies headquartered in Johannesburg, South Africa 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?

Altron Digital Business, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most enterprise IT infrastructure companies?

Johannesburg leads with 134 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 1,375 verified decision-maker contacts tracked across these 124 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 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 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.