Pentaho Data Integration ( ETL ) a.k.a Kettle
Viewer and exporter for Unreal Engine 1-4 assets
Toolkit for working with and mapping geospatial data
CSV Lint plug-in for Notepad++ for syntax highlighting
A small MIDI visualizer tool, using OpenGL
A web app for encryption, encoding, compression and data analysis
Open source finite element software for multiphysical problems
GPL software which renders realistic skies in real time
Viking is a free/open source program to manage GPS data
Complete solution for HDR photography
Generate diagrams from textual description
Simple yet flexible JavaScript charting for designers & developers
OpenGrADS provides extensions and interfaces for GrADS.
KeyCastr, an open-source keystroke visualizer
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
Apache Superset is a data visualization and data exploration platform
Cross-platform app for displaying and navigating events on a timeline.
Orange: Interactive data analysis
An implementation of the Grammar of Graphics in R
The simplest, fastest way to share business intelligence and analytics
RStudio is an integrated development environment (IDE) for R