MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.

PE Explorer lets you open, view and edit a variety of different 32-bit Windows executble binaries such as .exe and .dll files.

ResEdit is a discontinued developer tool application for the Apple Mac, used to create and edit resources directly in the Macs resource fork architecture.

Vertabelo is an online tool for database design.

Enterprise Architect is a visual modeling and design tool based on the OMG UML.

wxHexEditor is an open source cross-platform hex editor written in C++ and wxWidgets. It can work as low-level disk editor too.

Binary Ninja is a reverse engineering platform.