Julia frameworks to create desktop GUIs and web apps
I'd also add Pluto notebooks[1], which when deployed[2] powers interactive sites like MIT's Intro to Computational Thinking[3].I also get a ton of mileage creating Pluto notebooks and sharing the results for others to run or view a static webpage of the results.1: https://github.com/fonsp/Pluto.jl2: https://github.com/JuliaPluto/PlutoSliderServer.jl3: https://computationalthinking.mit.edu/Spring21/