The top alternatives to Nessus are Tenable Nessus, Qualys and Tenable Cloud Security, ranked by Staquest on relevance, shared use cases, and pricing. Tenable Nessus is the strongest free option.
Staquest ranks Tenable Nessus as the top alternative to Nessus — Industry-standard vulnerability assessment and configuration auditing.. The full ranked list above compares 10 options.
Tenable Nessus offers a free tier and is the highest-ranked free alternative to Nessus in Staquest's analysis.
Staquest identifies 10 tools similar to Nessus using graph relationships, embedding similarity, and shared categories. The closest are Tenable Nessus, Qualys, Tenable Cloud Security.
Metasploit is an open-source alternative to Nessus listed in this ranking.
Alternatives are ranked by verified relationships, semantic similarity, and category overlap.
