Company lists · Data refreshed September 2026

Top 25 Computer system integrators based in Johannesburg, South Africa

Name: Computer system integrators based in Johannesburg, South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 77 companies tracked

RevenueBase identified 77 computer system integrators headquartered in Johannesburg, South Africa as of September 2026 and tracks 655 professional contacts across them, including 192 with verified work emails. Johannesburg is the largest hub.

This list covers computer system integrators 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 19, 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 19, 2026 86% judged on-target in blind review

77Companies

655Contacts tracked

192Verified emails

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The 25 largest computer system integrators based in Johannesburg, South Africa

Ranked by team size

Top 25 of 77 computer system integrators based in Johannesburg, South Africa, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to computer system integrators: 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	Three6five	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	201-500	140 contacts →
	Indirect evidence “At three6five, IT is what we do best.” Source: RevenueBase Database · checked Sep 19, 2026
2	ISF SFP PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	85 contacts →
	Indirect evidence “Unlocking Safety & Security, Seamlessly Integrated: Welcome to ISF SFP, where we redefine the landscape of safety and security through seamless integration and cutting-edge…” Source: RevenueBase Database · checked Sep 19, 2026
3	Prosirius PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	51 contacts →
	Partial evidence “Prosirius (Pty) Ltd is an interactive technologies systems integration company, specializing in the design, supply, implementation and management of advanced interactive and…” Source: RevenueBase Database · checked Sep 19, 2026
4	Itec Communications	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	201-500	33 contacts →
	Indirect evidence “Office automation company” Source: RevenueBase Database · checked Sep 19, 2026
5	IT Evolution PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “IT Evolution is an IT support company based in Randburg, Johannesburg.” Source: RevenueBase Database · checked Sep 19, 2026
6	Smart Business Systems PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 19, 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 19, 2026
7	Vision Network Solutions	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect 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 19, 2026
8	Rocket Science Media Solutions	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “At Rocket Science, we are cutting-edge players in the IT sector, who believe in constantly challenging the status quo.” Source: RevenueBase Database · checked Sep 19, 2026
9	Brace Innovations	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	9 contacts →
	Indirect evidence “Brace Innovations (PTY) Ltd, is a division within the holding company Brace Holdings.” Source: RevenueBase Database · checked Sep 19, 2026
10	Cybervine IT Solutions	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Cybervine provides highly innovative, thoroughly researched, customised IT Architectural designs and solutions.” Source: RevenueBase Database · checked Sep 19, 2026
11	Network Platforms PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “At Network Platforms, computer infrastructure IS our core business, so we live this philosophy – we assess our clients’ needs, requirements and goals minutely and develop computer…” Source: RevenueBase Database · checked Sep 19, 2026
12	Streamline Technology	Strong evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	7 contacts →
	Strong evidence “Streamline Technology, established in 1994, is a company of technology consultants, software engineers, network integrators and system builders who specialise in delivering…” Source: RevenueBase Database · checked Sep 19, 2026
13	IT Savanna	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Technology is either holding your business back or moving it forward.” Source: RevenueBase Database · checked Sep 19, 2026
14	Personal Systems	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “We specialize in providing outsourced IT services, networking solutions, PC and software sales, and comprehensive support for small to medium businesses.” Source: RevenueBase Database · checked Sep 19, 2026
15	FAT Finger Tech	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Fat Finger Tech is a strategic digital growth and technology partner helping businesses build stronger brands, high-performing websites and secure digital foundations.” Source: RevenueBase Database · checked Sep 19, 2026
16	Thian Computer Solutions	Partial evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	4 contacts →
	Partial evidence “Thian Computer Solutions is a comprehensive technology solutions provider dedicated to empowering businesses with innovative and reliable IT services.” Source: RevenueBase Database · checked Sep 19, 2026
17	Agile Master System Integrators PTY LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	3 contacts →
	Strong evidence “AgileMSI is a Master Systems Integrator with operating entities in South Africa and the United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
18	Needd Technology Solutions	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Forward-looking innovative solution provider focused on the plan, build & support of technology infrastructure and services.” Source: RevenueBase Database · checked Sep 19, 2026
19	IT Palace SA	Partial evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “IT Palace SA are specialist in IT hardware and Software services, IT Business Solutions, Computers, Laptops, Servers, Networking, Data Centre Management, Cloud, Data Storage and…” Source: RevenueBase Database · checked Sep 19, 2026
20	Clayton Communications	Partial evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	3 contacts →
	Partial evidence “Clayton Communications has a comprehensive, end-to-end solution that covers all phases of the integration of AV and security systems, from planning and design, through working…” Source: RevenueBase Database · checked Sep 19, 2026
21	Dots Connect Technology	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Dots Connect Technology is a Business Solutions and IT Infrastructure Solutions provider, with an in-depth understanding of IT.” Source: RevenueBase Database · checked Sep 19, 2026
22	Ensite Technology Services PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “Ensite Technology Services provides practical, smart, sustainable and cost-effective technology solutions and services to SMEs and large enterprises.” Source: RevenueBase Database · checked Sep 19, 2026
23	Amava Technologies	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “Who we are?” Source: RevenueBase Database · checked Sep 19, 2026
24	Lantech Systems	Partial evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	1 contacts →
	Partial evidence “Lantech Systems (Pty) Ltd is a BEE Level 1 accredited, ICT Consulting, Services and Integration company.” Source: RevenueBase Database · checked Sep 19, 2026
25	Zingwe Global	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Zingwe Global was founded in 2014, 2021 saw its operations starting.” Source: RevenueBase Database · checked Sep 19, 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: computer system integrators. 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 computer system integrators.
Partial evidence: Its own public description names part of computer system integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name computer system integrators. 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 77 computer system integrators based in Johannesburg, South Africa

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Computer system integrators based in Johannesburg, South Africa at a glance

As of Sep 19, 2026

29.3%Verified-email coverage

8.5Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Johannesburg

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole South Africa list rather than for Johannesburg, so it is reported there. Company counts and contact totals on this page are exact for Johannesburg, over 77 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 computer system integrators, 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 “computer system integrators”. 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 computer system integrators), 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 computer system integrators, 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, 192 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 19, 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.

Computer system integrators by metro in South Africa

Computer system integrators in Johannesburg77
Computer system integrators in Cape Town36
Computer system integrators in Pretoria35

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 computer system integrators, 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 computer system integrators are there based in Johannesburg, South Africa?

RevenueBase identified 77 computer system integrators 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?

Three6five, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most computer system integrators?

Johannesburg leads with 77 headquartered companies, followed by Cape Town (36) and Pretoria (35).

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 192 verified decision-maker contacts tracked across these 77 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 19, 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.