#1Tools for examining source code without execution to find security flaws.
Kitploit recommended

The iOS Security Testing Framework

Easy setup of static analysis tools for Android and Java projects.

AWS Serverless Security

Open-source, cross-platform, multi-purpose security auditing tool

Web-based Source Code Vulnerability Scanner

The Secure Coding Framework

Link sources to sinks in C# applications.

Do You Know What's In Your Python Packages? A Tool for Visualizing Python Package Registry Security Audit Data