RenderDoc is a stand-alone graphics debugging tool
Delve is a debugger for the Go programming language
Robotics visualization and debugging
Record and Replay Framework
Continuous Profiling Platform. Debug performance issues
Linux system exploration and troubleshooting tool
Exploit Development and Reverse Engineering with GDB Made Easy
Debug bar for PHP
Package to integrate PHP Debug Bar with Laravel
Ease debugging PHP code for cool developers
A static analysis tool for finding errors in PHP applications
A header-only C++ library for accessing files in ELF binary format
Bug-fix-only libev port of shadowsocks
A simple Bash IDE / Debugger
C/C++ function instrumentation (AOP, exception/stack tracing, GC)
A new, open source, extensible, platform-agnostic tool
Capturing screenshots, screen video, logcat, extract string ids
An interpreter for the Lua language, written entirely in C#
C / C++ everything-memory debugger
Troubleshoot stack overruns
Easy to use GUI for GDB