Open source focus

Open Source Alternatives to Exein

21 open source Cybersecurity options similar to Exein, 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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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
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
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
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
Fleet Device Management55
CybersecuritySan Francisco, USA$32.0M
Autonomous endpoint management platform to counter AI-accelerated exploits.
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
OWASP38
CybersecurityRaleigh, USA
A global non-profit foundation dedicated to improving software security through open community collaboration.
Open source · Self-hostable
BeagleBone Black17
Embedded SystemsDallas, United States
A low-cost, community-supported development platform for hobbyists and developers.
Open source
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
Devicechain7
IoT
A complete, cloud-native IoT platform to connect, manage, and command device fleets at scale.
Open source
Ubuntu70
Operating SystemsLondon, United Kingdom$63.0M
A popular open-source Linux distribution.
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
Mirantis58
Cloud InfrastructureCampbell, United States$255.0M
Mirantis provides cloud-native infrastructure and AI platforms for enterprises to manage and operate complex environments.
Open source · Self-hostable
pgEdge, Inc.55
DatabaseSan Francisco, United States$24.0M
pgEdge offers distributed PostgreSQL that is optimised for the network edge in order to reduce data latency.
Open source · Self-hostable
United Manufacturing Hub Systems54
ManufacturingCologne, Germany$5.4M
An open-source data platform for manufacturers to access and structure machine data.
Open source · Self-hostable
CL
Clawdmeter15
Artificial IntelligenceReykjavik, Iceland
Tiny desktop dashboard for Claude Code usage stats.
Open source · Self-hostable
SQLite11
DatabasesCharlotte, United States
A self-contained, file-based SQL database engine widely used in embedded systems.
Open source · Self-hostable
Eclipse Foundation10
Open SourceBrussels, Belgium
A non-profit organization stewarding open source software projects, communities, and collaborative industry ecosystems.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
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
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
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
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
Fleet Device ManagementAutonomous endpoint management platform to counter AI-accelerated exploits.	Cybersecurity	Open source · Self-hostable	San Francisco, USA	$32.0M	55
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
OWASPA global non-profit foundation dedicated to improving software security through open community collaboration.	Cybersecurity	Open source · Self-hostable	Raleigh, USA	—	38
BeagleBone BlackA low-cost, community-supported development platform for hobbyists and developers.	Embedded Systems	Open source	Dallas, United States	—	17
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
DevicechainA complete, cloud-native IoT platform to connect, manage, and command device fleets at scale.	IoT	Open source	—	—	7
UbuntuA popular open-source Linux distribution.	Operating Systems	Open source · Self-hostable	London, United Kingdom	$63.0M	70
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
MirantisMirantis provides cloud-native infrastructure and AI platforms for enterprises to manage and operate complex environments.	Cloud Infrastructure	Open source · Self-hostable	Campbell, United States	$255.0M	58
pgEdge, Inc.pgEdge offers distributed PostgreSQL that is optimised for the network edge in order to reduce data latency.	Database	Open source · Self-hostable	San Francisco, United States	$24.0M	55
United Manufacturing Hub SystemsAn open-source data platform for manufacturers to access and structure machine data.	Manufacturing	Open source · Self-hostable	Cologne, Germany	$5.4M	54
CLClawdmeterTiny desktop dashboard for Claude Code usage stats.	Artificial Intelligence	Open source · Self-hostable	Reykjavik, Iceland	—	15
SQLiteA self-contained, file-based SQL database engine widely used in embedded systems.	Databases	Open source · Self-hostable	Charlotte, United States	—	11
Eclipse FoundationA non-profit organization stewarding open source software projects, communities, and collaborative industry ecosystems.	Open Source	Open source · Self-hostable	Brussels, Belgium	—	10