No direct Lookout replacements listed yet
Open-source security tools. To compare with Lookout.
60 open-source security tools
uBlock Origin
Security
uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.
GPL-3.0★ 68k
acme.sh
Security
A pure Unix shell script ACME client for SSL / TLS certificate automation
GPL-3.0vs DigiCert★ 48k
Trivy
Security
Find vulnerabilities, misconfigurations, secrets, SBOM in containers, Kubernetes, code rep
Apache-2.0vs Snyk★ 38k
Certbot
Security
Certbot is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTP
OSSvs DigiCert★ 33k
Gitleaks
Security
Find secrets with Gitleaks 🔑
MITvs GitGuardian★ 30k
Infisical
Security
Infisical is the open-source platform for secrets, certificates, and privileged access man
OSSvs Doppler★ 30k
TruffleHog
Security
Find, verify, and analyze leaked credentials
AGPL-3.0vs GitGuardian★ 28k
Cilium
Networking & VPN
eBPF-based Networking, Security, and Observability
Apache-2.0vs Illumio★ 26k
osquery
Security
SQL powered operating system instrumentation, monitoring, and analytics.
OSSvs Tanium★ 24k
SafeLine
Security
CyberServal open-source WAF is a self-hosted WAF with 20.9K GitHub stars. Block SQL inject
GPL-3.0vs Cloudflare★ 23k
fail2ban
Security
Daemon to ban hosts that cause multiple authentication errors
OSS★ 19k
Semgrep
Security
Lightweight static analysis for many languages. Find bug variants with patterns that look
LGPL-2.1vs Snyk★ 17k
Wazuh
Security
Wazuh - The Open Source Security Platform. Unified XDR and SIEM protection for endpoints a
OSSvs Splunk★ 17k
Cryptomator
Security
Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud st
GPL-3.0vs Tresorit★ 16k
CrowdSec
Security
Open-source IDS/IPS, WAF and bot detection for Linux, Windows, Docker and Kubernetes, with
MITvs Cloudflare★ 15k
cert-manager
Infrastructure & Containers
Automatically provision and manage TLS certificates in Kubernetes
Apache-2.0vs Keyfactor★ 14k
Grype
Security
A vulnerability scanner for container images and filesystems
Apache-2.0vs Snyk★ 13k
Kubescape
Security
Kubescape is an open-source Kubernetes security platform for your IDE, CI/CD pipelines, an
Apache-2.0vs Wiz★ 12k
VeraCrypt
Security
Disk encryption with strong security based on TrueCrypt
OSS★ 12k
BunkerWeb
Security
🛡️ Open-source and cloud-native Web Application Firewall (WAF)
AGPL-3.0vs Cloudflare★ 11k
SonarQube
Developer Tools
Continuous Inspection
LGPL-3.0vs Codacy★ 11k
Lego
Security
Let's Encrypt/ACME client and library written in Go
MITvs DigiCert★ 9.9k
ModSecurity
Security
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Ap
Apache-2.0vs Cloudflare★ 9.8k
Syft
Security
CLI tool and library for generating a Software Bill of Materials from container images and
Apache-2.0★ 9.6k
Certimate
Security
ssl tls https ssl-certificate ssl-certificates ssl-cert https-certificate https-certificat
MITvs Sectigo★ 9.3k
Falco
Security
Cloud Native Runtime Security
Apache-2.0vs Wiz★ 9.4k
Firezone
Networking & VPN
Blazing-fast remote access
Apache-2.0vs Tailscale★ 9.1k
step-ca
Security
🛡️ A private certificate authority (X.509 & SSH) & ACME server for secure automated certi
Apache-2.0vs Entrust★ 8.9k
PrivateBin
Productivity
General information on the PrivateBin project.
OSS★ 8.6k
Microsandbox
AI Infrastructure
Easy, fast microVMs for untrusted workloads
Apache-2.0★ 8.5k
OpenBao
Security
OpenBao is a software solution to manage, store, and distribute sensitive data including s
MPL-2.0vs AWS Secrets Manager★ 8.3k
Graylog
Monitoring & Observability
Free and open log management
OSSvs Splunk★ 8.2k
NetAlertX
Networking & VPN
NetAlertX: Visualize Your Networks, Get Real-Time Alerts, and Seamlessly Integrate with Yo
GPL-3.0vs Auvik★ 7.2k
OnionShare
File Storage & Sharing
Securely and anonymously share files, host websites, and chat with friends using the Tor n
OSSvs WeTransfer★ 7.1kBlocky
Networking & VPN
Fast and lightweight DNS proxy as ad-blocker for local network with many features
Apache-2.0vs Cisco Umbrella★ 7k
Fleet
Security
Open device management
OSSvs Jamf★ 6.9k
Suricata
Security
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network
GPL-2.0vs Palo Alto Networks★ 6.7k
MISP
Security
MISP (core software) - Open Source Threat Intelligence and Sharing Platform
AGPL-3.0vs Recorded Future★ 6.6k
Certd
Security
开源SSL证书管理工具；全自动证书申请、更新、续期；通配符证书，泛域名证书申请；证书自动化部署到阿里云、腾讯云、主机、群晖、宝塔；https证书，pfx证书，der证书，TLS证书
AGPL-3.0vs Sectigo★ 5k
DefectDojo
Security
Open-Source Unified Vulnerability Management, DevSecOps & ASPM
BSD-3-Clausevs Tenable★ 5k
OSSEC
Security
OSSEC is an Open Source Host-based Intrusion Detection System that performs log analysis,
GPL-2.0vs CrowdStrike★ 5.1k
Pomerium
Security
Pomerium is an identity and context-aware access proxy.
Apache-2.0vs Cloudflare Zero Trust★ 5k
OpenVAS
Security
This repository contains the scanner component for Greenbone Community Edition.
GPL-2.0vs Tenable★ 4.8k
Security Onion
Security
Security Onion is a free and open platform for threat hunting, enterprise security monitor
OSSvs Splunk★ 4.9k
Zrok
Networking & VPN
Secure internet sharing made simple.
Apache-2.0vs ngrok★ 4.7k
OPNsense
Security
OPNsense GUI, API and systems backend
BSD-2-Clausevs Fortinet★ 4.7k
CISO Assistant
Security
CISO Assistant is a one-stop-shop GRC platform for Risk Management, AppSec, Compliance & A
OSSvs Vanta★ 4.5k
OpenZiti
Networking & VPN
The parent project for OpenZiti. Here you will find the executables for a fully zero-trust
Apache-2.0vs Twingate★ 4.4k
Dependency-Track
Security
Dependency-Track is an intelligent Component Analysis platform that allows organizations t
Apache-2.0vs Snyk★ 4.3k
2FAuth
Auth & Identity
A Web app to manage your Two-Factor Authentication (2FA) accounts and generate their secur
AGPL-3.0vs Microsoft Authenticator★ 4.2k
IVRE
Security
Network recon framework. Build your own, self-hosted and fully-controlled alternatives to
GPL-3.0vs Shodan★ 4.2k
Octelium
Networking & VPN
A next-gen FOSS self-hosted unified zero trust secure access platform that can operate as
AGPL-3.0vs Tailscale★ 4.1k
Privacy Badger
Security
Privacy Badger is a browser extension that automatically learns to block hidden trackers
OSS★ 3.9k
Tracecat
Security
Open-source security automation platform for teams and AI agents
AGPL-3.0vs Tines★ 3.8k
AllinSSL
Security
AllinSSL 是一个集证书申请、管理、部署和监控于一体的SSL证书全生命周期管理工具。AllinSSL is an all-in-one SSL certificate lif
AGPL-3.0★ 3.6k
OWASP CRS
Security
OWASP CRS (Official Repository)
Apache-2.0★ 3.3kPassword Pusher
Security
🔐 Securely share sensitive information with automatic expiration & deletion after a set
Apache-2.0★ 3.2k
Onetime Secret
Security
Keep passwords and other sensitive information out of your chat logs and inboxes.
MIT★ 3k
ClamAV
Security
ClamAV - Documentation is here: https://docs.clamav.net
GPL-2.0vs Avast★ 7.3k
Caddy Security
Auth & Identity
🔐 Authentication, Authorization, and Accounting (AAA) App and Plugin for Caddy v2. 💎 Imp
Apache-2.0★ 2.2k