🔒 Security & Auth

12 open source security & auth projects reviewed and verified.

Bitwarden✓ Verified★ 16K
Password manager with zero-knowledge encryption. Free for personal use. Self-hostable.
Security & AuthGPL-3.0Self-Hosted
Alt: 1Password, LastPassC#
Keycloak✓ Verified★ 24K
Identity and access management. SSO, social login, user federation, and fine-grained authorization.
Security & AuthApache-2.0Self-Hosted
Alt: Auth0, OktaJava
Wireshark✓ Verified★ 7K
Network protocol analyzer. Capture and inspect network traffic in real time.
NetworkingGPL-2.0
Alt: tcpdump, FiddlerC
Nmap✓ Verified★ 10K
Network discovery and security auditing tool. Port scanning, OS detection, and vulnerability discovery.
NetworkingNPSL
Alt: Masscan, Angry IP ScannerC / Lua
Metasploit Framework✓ Verified★ 34K
Penetration testing framework. World's most used pen testing tool for security professionals.
Security & AuthBSD-3-Clause
Alt: Burp Suite, Cobalt StrikeRuby
OpenVPN✓ Verified★ 11K
Open source VPN solution. Secure point-to-point and site-to-site connections.
NetworkingGPL-2.0Self-Hosted
Alt: NordVPN, ExpressVPNC
WireGuard✓ Verified★ 30K
Fast, modern VPN tunnel. Minimal codebase, state-of-the-art cryptography, high performance.
NetworkingGPL-2.0
Alt: OpenVPN, IPsecC
Snort✓ Verified★ 5K
Network intrusion detection and prevention system. Real-time traffic analysis and packet logging.
NetworkingGPL-2.0
Alt: Suricata, ZeekC
Suricata✓ Verified★ 5K
High-performance network IDS, IPS, and security monitoring engine. Multi-threaded threat detection.
NetworkingGPL-2.0
Alt: Snort, ZeekC / Rust
OWASP ZAP✓ Verified★ 13K
Web application security scanner. Find vulnerabilities in your web apps during development and testing.
Security & AuthApache-2.0
Alt: Burp Suite, AcunetixJava
Fail2Ban✓ Verified★ 12K
Intrusion prevention software. Ban IPs that show malicious signs based on log file analysis.
Security & AuthGPL-2.0Self-Hosted
Alt: CrowdSec, DenyHostsPython
HashiCorp Vault✓ Verified★ 31K
Secrets management and data protection. Secure, store, and control access to tokens, passwords, and keys.
Security & AuthBSL-1.1Self-Hosted
Alt: AWS Secrets Manager, CyberArkGo