Biblioshiny is a shiny app providing a web-interface for bibliometrix. Bibliometrix gives all the instrument sto pursue a complete bibliometric analysis, following the Science Mapping Workflow.
A project at the University of Colorado Boulder, PhET sims are based on extensive education research and engage students through an intuitive, game-like environment where students learn through exploration and discovery.
Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
Taguette is a free and open-source tool for qualitative research. You can import your research materials, highlight and tag quotes, and export the results!