Open-source alternatives to Nessus

Fast vulnerability scanner — Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulnerabilities on the internet. It helps you find vulnerabilities in your applications, APIs, networks, DNS, and cloud configurations.

↔ alternative to Nessus

Comprehensive web asset and vulnerability scanner — python3写的综合扫描工具，主要用来存活验证，敏感文件探测(目录扫描/js泄露接口/html注释泄露)，WAF/CDN识别，端口扫描，指纹/服务识别，操作系统识别，POC扫描，SQL注入，绕过CDN，查询旁站等功能，主要用来甲方自测或乙方授权测试，请勿用来搞破坏。

↔ alternative to Burp Suite、Acunetix、Nessus

Intranet penetration and vulnerability scanner — Ladon for Kali 全平台开源内网渗透扫描器,Windows/Linux/Mac/路由器内网渗透，使用它可轻松一键批量探测C段、B段、A段存活主机、高危漏洞检测MS17010、SmbGhost，远程执行SSH/Winrm，密码爆破SMB/SSH/FTP/Mysql/Mssql/Oracle/Winrm/HttpBasic/Redis，端口扫描服务识别PortScan指纹识别/HttpBanner/HttpTitle/TcpBanner/Weblogic/Oxid多网卡主机，端口扫描服务识别PortScan。

↔ alternative to Nessus

Lightweight website vulnerability scanner — 开源、轻量、快速、跨平台 的网站漏洞扫描工具，帮助您快速检测网站安全隐患。功能 端口扫描(port scan) 指纹识别(fingerprint) 漏洞检测(nday check) 智能爆破 (admin brute) 敏感文件扫描(file fuzz)

↔ alternative to Nessus、Burp Suite、Acunetix

All-in-one recon and vulnerability scanner — EZ是一款集信息收集、端口扫描、服务暴破、URL爬虫、指纹识别、被动扫描为一体的跨平台漏洞扫描器。

↔ alternative to Nessus

AI vulnerability scanner — Vigolium - High-fidelity vulnerability scanner fusing agentic AI with native speed, modularity, and precision

↔ alternative to Nessus

Network audit and vulnerability scanning toolkit — wide range mass audit toolkit

↔ alternative to Nessus