Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Solibri Model Viewer - Views Solibri Model Checker and IFC models on both Windows and Mac.
TeXworks - The TeXworks project is an effort to build a simple TeX front-end program (working environment)...
Tekla Structures BIM Software - Open approach to Building Information Modeling
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.
FZKViewer - FZKViewer visualises the sematic data models IFC, CityGML und gbXML