Company lists · Data refreshed September 2026

Top 8 Open source software companies based in Brazil

RevenueBase identified 39 open source software companies headquartered in Brazil as of September 2026 and tracks 213 professional contacts across them, including 14 with verified work emails and 4 with mobile numbers. Sao Paulo is the largest hub.

This list covers open source software companies headquartered in Brazil, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
39Companies
213Contacts tracked
14Verified emails
4Mobile numbers
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The 8 largest open source software companies based in Brazil

Ranked by team size
Top 8 of 39 open source software companies based in Brazil, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names open source software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1Rio De Janeiro, BrazilHQ checked Sep 5, 20261-1026

“Como empresa líder em consultoria, serviços e soluções baseadas na plataforma Linux, oferecemos um vasto conjunto de programas integrados, gratuitos e de alta qualidade técnica…”

Source: company website · checked Sep 5, 2026
2
Jambu TecnologiaIndirect evidence
Belém, BrazilHQ checked Sep 5, 20261-1016

“Jambu Tecnologia is a project company.”

Source: company website · checked Sep 5, 2026
3
InternetworkPartial evidence
Brusque, BrazilHQ checked Sep 5, 20261-104

“A Willrich Assessoria em Software Livre tem por objetivo prestar os melhores serviços em infra-estrutura, prezando essencialmente a busca de baixos custos, qualidade e integração…”

Source: company website · checked Sep 5, 2026
4
Workinside TecnologiaStrong evidence
Cotia, BrazilHQ checked Sep 5, 202611-504

“Disponibilizamos a todos nossos clientes e parceiros um conjunto de soluções Open Source altamente personalizáveis.”

Source: company website · checked Sep 5, 2026
5Rio De Janeiro, BrazilHQ checked Sep 5, 20261-102

“Somos uma empresa especializada em utilizar softwares livres, integrados aos proprietários.”

Source: company website · checked Sep 5, 2026
6
ExablackStrong evidence
Rio De Janeiro, BrazilHQ checked Sep 5, 202611-502

“A Exablack é o resultado do desejo de criar uma empresa genuinamente Brasileira e 100% Open Source no mercado nacional, fazendo com que profissionais de nosso país possam…”

Source: company website · checked Sep 5, 2026
7Santo André, BrazilHQ checked Sep 5, 20261-101

“Consultoria e serviços em TI, especializada em soluções de código aberto para infraestrutura, negócios, produto e marketing.”

Source: company website · checked Sep 5, 2026
8Sao Paulo, BrazilHQ checked Sep 5, 20261-101

“Soluções Open Source multiplataforma em TI.”

Source: company website · checked Sep 5, 2026

Showing 8 of 39 open source software companies based in Brazil

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 14 reachable decision-makers.

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Open source software companies based in Brazil at a glance

As of Sep 5, 2026
1-10Median size (employees)
Sao PauloLargest hub · 6 HQs
4Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
26
11-50
10
51-200
2
1,001-5,000
1

Verified emails by last verification

0–30
14
31–60
0
61–90
0
90–180
0
180+
0

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 open source software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Brazil whose own description of what they do matches “open source software companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among open source software companies, and records with no verified work email. Companies headquartered outside Brazil 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 an evidence 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, 14 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 5, 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.

Frequently asked

How many open source software companies are there based in Brazil?

RevenueBase identified 39 open source software companies headquartered in Brazil 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?

Linux Solutions Informática, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which city has the most open source software companies?

Sao Paulo leads with 6 headquartered companies, followed by Rio De Janeiro (4) and Belem (2).

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 14 verified decision-maker contacts tracked across these 39 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 5, 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.