roadmap.sh is a website that provides curated resources and guidance for learning various programming and technology-related skills. the website offers roadmaps that outline the skills and knowledge required to become proficient in various areas, such as front-end development, back-end development, devops, data science, and more.

devdocs is an open source web app that combines documentation for lots of developer tools into a single searchable interface.

prezi is a presentation program for exploring and sharing ideas about a virtual document based on cloud computing. the application is distinguished by its zoomable graphical interface, which allows users to have a closer or further view of the area presentation, in a 2.5d space.