SonarQube C++ Community plugin (cxx plugin): This plugin adds C++ support to SonarQube with the focus on integration of existing C++ tools.

SonarQube plugin for Flutter / Dart

Detects smells and computes metrics of Java code

walkmod: an open source tool to fix coding style issues

Code Smells plugin for SonarQube and companion Java library

TDCleaner: A Tool for Detecting Obsolete TODO Comments in Software Repos

Technical-Debt-Behavior-Detection is a code quality assessment tool for code written in Java. It detects numerous design and implementation smells. It also computes many commonly used object-oriented metrics. Features Detects 17 design smells, 10 implementation smells,computes CC, LOC, LCOM,FANI/O

The java-tech-debt project is an annotation and reporting tool designed to identify and manage technical debts in code.

Tool for Prioritizing Architecture-Sensitive Smells based on a Technical Debt Index

Technical Debt Management is a ToolBox developed in the context of a European Union project H2020 (SDK4ED - https://sdk4ed.eu) from University of Macedonia (UoM). It provides analysis in all aspects of technical debt (TD principal, TD interest, TD breaking point, TD interest probability).