Kepler.gl is a powerful open source geospatial analysis tool for data
MDG for Sparx' Enterprise Architect to Create TRAK arch. descriptions
Data quality analysis, profiling, cleansing, duplicate detection +more
Electronic design and programming tools suite like Eagle, MpLab
GladTeX -- embed LaTeX-quality images in HTML
Runge is an Interactive Solver for Systems of Differential Equations
Semantically enriched WSDL 2.0 descriptors for BioMoby services
UML 2 Statemachine for C++ is a development framework with DSL support
PetriNetExec a library for embedding Petri Nets into Java applications