Ghidra is an Open Source multi-platform software reverse engineering (SRE) framework created and maintained by the National Security Agency Research Directorate.
DLL Export Finder automatically locates all DLLs containing export functions or APIs, allowing you to apply file filters and save export information to a file.
Google Optimization Tools (OR-Tools) is an Open Source software suite for optimization, tuned for tackling the world's toughest problems in vehicle routing, flows, integer and linear programming, and constraint programming.
VisualFiles Script Editor is a free programmer's editor specifically for VisualFiles scripts supporting VFS and TXT files, including syntax highlighting and more.
Attack Surface Analyzer is developed by the Microsoft Security Engineering Center (MSEC). It is the same tool used by Microsoft's internal product groups to catalog changes made to the operating system attack surface by installing new software.
jGRASP is a lightweight freeware development environment for improving the comprehensibility of software via the automatic generation of software visualizations.
Lazarus is a multi-platform, feature-rich programming environment for the FreePascal Compiler that supports the creation of self-standing graphical and console applications. Available for 32 Bit as well.