Open source focus

Open Source Alternatives to Regulus Cyber

16 open source Drones options similar to Regulus Cyber, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

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Socket64
Software Supply Chain SecuritySan Francisco, United States$60.0M
Socket is a software supply chain security company that proactively blocks malicious open-source packages and extensions in AI-driven software development.
Open source
Backslash Security56
CybersecurityTel Aviv, Israel$27.0M
Agentic endpoint security for AI coding, providing visibility, governance, and real-time protection.
Open source
Puck52
Endpoint SecurityUnited States
Open-source, AI-driven endpoint investigation tool for security teams.
Open source · Self-hostable
Defcon47
HardwareMcLean, United States$44.0M
The Defcon badges feature a unique open-source chip that doubles as a security key.
Open source
OWASP38
CybersecurityRaleigh, USA
A global non-profit foundation dedicated to improving software security through open community collaboration.
Open source · Self-hostable
0sec11
Cybersecurity
An applied cybersecurity research lab using AI agents to autonomously discover, exploit, and verify software vulnerabilities.
Open source · Self-hostable
Falco10
Cybersecurity
Open-source, cloud-native runtime security tool for detecting anomalous application behavior across hosts, containers, and Kubernetes.
Open source · Self-hostable
Umbrasec9
Cybersecurity
Independent defensive security research focused on detection engineering, threat analysis, and open-source tooling for defenders.
Open source
Openthreatgrid8
Cybersecurity
Open honeynet telemetry, responsible threat intelligence sharing, and reproducible security research workflows for defenders and researchers.
Open source
Ubuntu70
Operating SystemsLondon, United Kingdom$63.0M
A popular open-source Linux distribution.
Open source · Self-hostable
Canonical61
Open SourceLondon, United Kingdom$348K
Canonical develops and supports Ubuntu, a leading open-source operating system for cloud, servers, and edge devices.
Open source · Self-hostable
InfluxData58
DatabaseSan Francisco, United States$200.1M
Creator of InfluxDB, an open-source time series database for managing and analyzing high-volume, high-speed data.
Open source · Self-hostable
Arduino46
Open SourceSomerville, United States$54.0M
Open-source hardware and software company providing microcontrollers and kits for digital devices.
Open source · Self-hostable
BeagleBone Black17
Embedded SystemsDallas, United States
A low-cost, community-supported development platform for hobbyists and developers.
Open source
Eclipse Foundation10
Open SourceBrussels, Belgium
A non-profit organization stewarding open source software projects, communities, and collaborative industry ecosystems.
Open source · Self-hostable
Devicechain7
IoT
A complete, cloud-native IoT platform to connect, manage, and command device fleets at scale.
Open source

Company	Sector	License	HQ	Funding	Score
SocketSocket is a software supply chain security company that proactively blocks malicious open-source packages and extensions in AI-driven software development.	Software Supply Chain Security	Open source	San Francisco, United States	$60.0M	64
Backslash SecurityAgentic endpoint security for AI coding, providing visibility, governance, and real-time protection.	Cybersecurity	Open source	Tel Aviv, Israel	$27.0M	56
PuckOpen-source, AI-driven endpoint investigation tool for security teams.	Endpoint Security	Open source · Self-hostable	United States	—	52
DefconThe Defcon badges feature a unique open-source chip that doubles as a security key.	Hardware	Open source	McLean, United States	$44.0M	47
OWASPA global non-profit foundation dedicated to improving software security through open community collaboration.	Cybersecurity	Open source · Self-hostable	Raleigh, USA	—	38
0secAn applied cybersecurity research lab using AI agents to autonomously discover, exploit, and verify software vulnerabilities.	Cybersecurity	Open source · Self-hostable	—	—	11
FalcoOpen-source, cloud-native runtime security tool for detecting anomalous application behavior across hosts, containers, and Kubernetes.	Cybersecurity	Open source · Self-hostable	—	—	10
UmbrasecIndependent defensive security research focused on detection engineering, threat analysis, and open-source tooling for defenders.	Cybersecurity	Open source	—	—	9
OpenthreatgridOpen honeynet telemetry, responsible threat intelligence sharing, and reproducible security research workflows for defenders and researchers.	Cybersecurity	Open source	—	—	8
UbuntuA popular open-source Linux distribution.	Operating Systems	Open source · Self-hostable	London, United Kingdom	$63.0M	70
CanonicalCanonical develops and supports Ubuntu, a leading open-source operating system for cloud, servers, and edge devices.	Open Source	Open source · Self-hostable	London, United Kingdom	$348K	61
InfluxDataCreator of InfluxDB, an open-source time series database for managing and analyzing high-volume, high-speed data.	Database	Open source · Self-hostable	San Francisco, United States	$200.1M	58
ArduinoOpen-source hardware and software company providing microcontrollers and kits for digital devices.	Open Source	Open source · Self-hostable	Somerville, United States	$54.0M	46
BeagleBone BlackA low-cost, community-supported development platform for hobbyists and developers.	Embedded Systems	Open source	Dallas, United States	—	17
Eclipse FoundationA non-profit organization stewarding open source software projects, communities, and collaborative industry ecosystems.	Open Source	Open source · Self-hostable	Brussels, Belgium	—	10
DevicechainA complete, cloud-native IoT platform to connect, manage, and command device fleets at scale.	IoT	Open source	—	—	7