Scrutinizer is described as 'continuous inspection platform helping you to create better software' and is an website in the Development category. There are more than 10 alternatives to Scrutinizer, not only websites but also apps for a variety of platforms, including Self-Hosted solutions, Windows, Linux and SaaS. The best alternative is Codacy. It's not free, so if you're looking for a free alternative, you could try Blink grep or Source-Navigator NG. Other great sites and apps similar to Scrutinizer are Source Insight (Paid), CodeFactor.io (Freemium), Code Climate (Freemium) and Feram (Freemium).
Codacy automates code reviews and monitors code quality on every commit and pull request reporting back the impact of every commit or pull request, issues concerning code style, best practices, security, and many others.
Code Climate consolidates the results from a suite of static analysis tools into a single, real-time report, giving your team the information it needs to identify hotspots, evaluate new approaches, and improve code quality.
Feram is a service which finds bugs in your merge requests and automatically generates patches for those bugs. Afterwards you can step through the patches and decide which ones you want to apply. Finally, the selected patches are committed to your merge request.