Open source focus

Open Source Alternatives to Communitycyber

19 open source Cybersecurity options similar to Communitycyber, 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
Probo58
SMB SoftwareTel Aviv, Israel$2.5M
Open-source compliance solution for startups to achieve SOC 2, ISO 27001, and HIPAA.
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
OWASP38
CybersecurityRaleigh, USA
A global non-profit foundation dedicated to improving software security through open community collaboration.
Open source · Self-hostable
Umbrasec9
Cybersecurity
Independent defensive security research focused on detection engineering, threat analysis, and open-source tooling for defenders.
Open source
FINLAI designs8
Digitalization PartnershipsLinz, Austria
Develops digitalization partnerships, local IT security software (NoRisk), and AI agents for sole proprietors and SMEs.
Open source
Openthreatgrid8
Cybersecurity
Open honeynet telemetry, responsible threat intelligence sharing, and reproducible security research workflows for defenders and researchers.
Open source
Hugging Face76
AINew York, United States$395.2M
Hugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.
Open source · Self-hostable
Backstage57
Developer ToolsStockholm, Sweden$63.0M
An open-source developer portal for building and managing software.
Open source · Self-hostable
Heroic Labs47
GamingLisbon, Portugal
Social infrastructure for games, makers of Nakama game server.
Open source · Self-hostable
Flectra27
Open SourceAhmedabad, India
Open-source ERP and CRM software to streamline business operations and enhance productivity.
Open source · Self-hostable
ERPNext20
Enterprise SoftwareBangalore, India
Open-source ERP system for small and medium-sized businesses.
Open source · Self-hostable
Realnas19
Open Source
Open-source Network Attached Storage (NAS) operating system based on FreeBSD, managing ZFS, SMB, NFS, users, snapshots, and boot environments.
Open source · Self-hostable
Dolibarr18
Open Source
Open-source ERP and CRM web suite for businesses of all sizes.
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
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
ProboOpen-source compliance solution for startups to achieve SOC 2, ISO 27001, and HIPAA.	SMB Software	Open source · Self-hostable	Tel Aviv, Israel	$2.5M	58
Fleet Device ManagementAutonomous endpoint management platform to counter AI-accelerated exploits.	Cybersecurity	Open source · Self-hostable	San Francisco, USA	$32.0M	55
OWASPA global non-profit foundation dedicated to improving software security through open community collaboration.	Cybersecurity	Open source · Self-hostable	Raleigh, USA	—	38
UmbrasecIndependent defensive security research focused on detection engineering, threat analysis, and open-source tooling for defenders.	Cybersecurity	Open source	—	—	9
FINLAI designsDevelops digitalization partnerships, local IT security software (NoRisk), and AI agents for sole proprietors and SMEs.	Digitalization Partnerships	Open source	Linz, Austria	—	8
OpenthreatgridOpen honeynet telemetry, responsible threat intelligence sharing, and reproducible security research workflows for defenders and researchers.	Cybersecurity	Open source	—	—	8
Hugging FaceHugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.	AI	Open source · Self-hostable	New York, United States	$395.2M	76
BackstageAn open-source developer portal for building and managing software.	Developer Tools	Open source · Self-hostable	Stockholm, Sweden	$63.0M	57
Heroic LabsSocial infrastructure for games, makers of Nakama game server.	Gaming	Open source · Self-hostable	Lisbon, Portugal	—	47
FlectraOpen-source ERP and CRM software to streamline business operations and enhance productivity.	Open Source	Open source · Self-hostable	Ahmedabad, India	—	27
ERPNextOpen-source ERP system for small and medium-sized businesses.	Enterprise Software	Open source · Self-hostable	Bangalore, India	—	20
RealnasOpen-source Network Attached Storage (NAS) operating system based on FreeBSD, managing ZFS, SMB, NFS, users, snapshots, and boot environments.	Open Source	Open source · Self-hostable	—	—	19
DolibarrOpen-source ERP and CRM web suite for businesses of all sizes.	Open Source	Open source · Self-hostable	—	—	18
DevicechainA complete, cloud-native IoT platform to connect, manage, and command device fleets at scale.	IoT	Open source	—	—	7