Browser-based frontend to gdb (gnu debugger)
Bug-fix-only libev port of shadowsocks
A COBOL debugger for GnuCOBOL/OpenCOBOL written in GnuCOBOL
Source-to-source debuggable derivatives in pure Python
iOS Hierarchy viewer - View and Coredata debugging made easy
A power tool to debug core dump, memory corruption, optimized code.
Debugging tools for application-to-application communication.