OpenVAS
Open Vulnerability Assessment System (or OpenVAS for short) is a full-featured, cross-functional, open-source web security scanner that started its existence when Nessus ceased to be an open-source software and was changed into a commercial security solution. Once named GNessUs and set in motion as a spin-off of Nessus, it still uses plenty of plugins written in Nessus Attack Scripting Language (NASL). Ultimately, in 2006, OpenVAS would come to be the enterprise-level tool we know today. Nowadays, OpenVAS comes in two forms: as an open-source module and as a component of commercial software, both of which are maintained by Germany-based Greenbone Networks. OpenVAS’s official site is so simplistic it’ll redirect you to Greenbone’s site and their GitHub pages right off the bat, so you can find out something about OpenVAS and its history. However, to be fair, their GitHub page offers plenty of information – perhaps even more than you’ll care to read. Plus, there’s a blog and it appe...