European & open-source Security & privacy
49 European and open-source security & privacy tools — alternatives to the usual US software, built and hosted in Europe.
Updated 8 Sep 2026 · refreshed weekly
42Crunch
API security platform with discovery, conformance scanning and runtime protection, headquartered in Dublin.
Actalis
Italian certificate authority within the Aruba Group, offering SSL/TLS, S/MIME, qualified digital signatures and timestamping…
Aikido Security
A continuous and autonomous security platform designed to help developers identify and eliminate security threats in the software…
aurologic
German infrastructure provider near Frankfurt offering DDoS mitigation, dedicated servers and cloud hosting from its own…
Bitdefender
Romanian cybersecurity company offering consumer antivirus, endpoint protection and XDR used in 170+ countries.
Borlabs Cookie
This WordPress plugin helps websites comply with GDPR and ePrivacy regulations by allowing visitors to choose which cookies they…
BunkerWeb
French open-source WAF and reverse proxy (AGPL-3.0) from Bunkerity, adding DDoS rate limiting, anti-bot challenges and automatic…
Buypass
Norwegian certificate authority offering ACME-compatible free DV certificates alongside commercial OV/EV certs, plus electronic…
Certum
Polish certificate authority issuing SSL/TLS and code-signing certificates, S/MIME and qualified electronic signatures.
cidaas
German cloud identity and access management platform with SSO, MFA, passwordless login, consent management and GDPR built into…
Clavister
This company provides adaptive, high-performance cybersecurity solutions, including firewalls, to protect mission-critical…
Cookiebot
This consent management platform (CMP) helps businesses achieve data privacy compliance by automatically managing visitor consent…
Cryptomator
Open-source client-side encryption that secures files before they sync to any cloud storage provider.
Darktrace
This AI cybersecurity platform uses artificial intelligence to detect and autonomously respond to in-progress cyber-attacks…
DevGuard
This open-source developer security platform helps manage vulnerabilities, secure the software supply chain, and accelerate the…
Diamwall
A global Content Delivery Network (CDN) that provides cybersecurity solutions, specifically offering DDoS mitigation to secure…
DTS Cockpit
DTS Cockpit is a security operations platform that provides centralized 24/7 visibility and control of an IT landscape, offering…
Endian
It provides IT and OT security solutions, including firewalls and unified threat management, for business and industrial…
ESET
Antivirus and endpoint-security software for consumers and businesses.
F-Secure
Finnish cybersecurity firm (1988) offering consumer internet security and enterprise EDR via its WithSecure arm, known for a…
FacePhi
It provides digital identity verification and fraud prevention technology, with its core development originating from its…
fidentity AG
This company provides solutions for online identification and digital signatures, focusing on meeting high standards for digital…
Friendly Captcha
This service provides privacy-first bot protection, offering a globally available CAPTCHA solution designed for strict privacy…
G DATA
German-made antivirus and endpoint protection with Germany-only data hosting, ISO 27001 certified.
G DATA CyberDefense
This company provides cybersecurity solutions, including antivirus software, to protect customers from various forms of…
GitGuardian
Paris-based platform for detecting and governing leaked secrets across the software development lifecycle.
PySyft
A Python library for secure and private deep learning, enabling data scientists to perform computations on sensitive data without…
Hanko
An open-source authentication and user management platform for web and mobile applications, offering various authentication…
InControl Hub
This platform helps organizations manage risk and compliance by turning existing processes into auditable control frameworks for…
Intmaker OÜ
A personal website and blog by Taras, a solopreneur, marketer, architect, and mentor, where he shares his projects and insights…
LePhish
It provides automated phishing simulations and employee training to help companies test and improve their cybersecurity defenses…
Link11
German cybersecurity firm from Frankfurt specialising in AI-based DDoS protection for websites, APIs and networks with near-zero…
Mailvelope
This browser extension integrates PGP encryption into webmail services, allowing users to encrypt, decrypt, and manage keys…
Myra Security
Munich-based, BSI-certified DDoS protection, WAF and bot management for web apps and APIs.
Obrela
It provides real-time, risk-aligned cybersecurity services, offering managed detection and response, security analytics, and…
OpenKeychain
A free and open-source Android app that provides strong, user-based encryption compatible with OpenPGP, storing and managing…
Orbiq
A cybersecurity research instrument that maps a company's entire domain footprint, including domains it owns and those its…
PanoptesOne
This platform provides cyber risk intelligence and posture management, offering continuous security assessments and vulnerability…
Quad9
A public and free DNS service that provides enhanced security and privacy by blocking malicious domains and offering a more…
Resistant AI
This tool provides AI-powered fraud detection, specializing in identifying fake, tampered, and AI-generated documents to prevent…
Rublon
A multi-factor authentication (MFA) solution designed to secure remote access and protect user accounts. The tool offers high…
SikkerKey
Danish secrets vault and machine-authentication platform: stores and manages secrets for every app, machine and service, gating…
Tails
A security-focused Debian-based Linux distribution, it runs on a computer to preserve privacy and avoid censorship, operating as…
Tievolu GbR
Tievolu GbR provides DDoS protection and IP transit services, acting as an internet carrier for businesses. It offers network…
Usercentrics
This platform helps businesses manage user consent and maintain data privacy compliance, meeting legal requirements and…
Veriff
This software provides identity verification by analyzing documents and biometrics, and screening databases across over 230…
Voxility
Bucharest network infrastructure provider offering DDoS mitigation, anycast CDN, IP transit and dedicated servers from an EU…
XignSys GmbH
A cybersecurity company that provides solutions for secure digital identities, multi-factor authentication, and mobile security…
Yubico
It provides hardware security keys for strong two-factor authentication, making secure login easy and affordable for individuals…