Markdown WYSIWYG Editor. GFM Standard + Chart & UML Extensible
A free, open source, multi-platform SQLite database manager
Open source PDF editor
Third-party TI-84 Plus CE / TI-83 Premium CE emulator
A pleasant note-taking platform in native C++
Flexible level editor
Open source plain text editor designed for writing novels
C++ Qt ORM (Object Relational Mapping) and ODM library
E-XD++ UML Control for C/C++, C# and .NET, it can be used within Delph
Audio Tag Editor
An integrated writing environment for creating LaTeX documents
Shotcut is a free, open source, cross-platform video editor.
View and edit DICOM tags (Windows & Mac & Linux)
an Open Source BPMN 2.0 / DMN 1.1 Modeler
GUI to work with abc notation
Cross-platform text and code editor
Graphical editor software for many Boss and Roland effect & synth unit
An Audio/MIDI multi-track sequencer
Real Time Electronic Circuit Simulator.
Python Development Environment with all batteries included