Apps similar to WebStrike include Acunetix. It's paid, but Website Security Scanner is free. Other options are Invicti (Netsparker). In total there are three Vulnerability Scanners like WebStrike for Windows and the web.
Audit your website security and web applications for SQL injection, Cross site scripting and other web vulnerabilities with Acunetix Web Security Scanner. Download Free Edition!
Free online vulnerability scanner. It has been working since 2016 and has two modes: quick and normal. The service is quite easy to use and does not require registration. You need to enter your website URL and email to receive a security report.
Netsparker is the only False-positive-free web application security scanner. Simply point it at your website and it will automatically discover the flaws that could leave you dangerously exposed.
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