RAW Graphs - The missing link between spreadsheets and data visualization. This open source data visualization framework aims at making the visual representation of complex data easy for everyone. RAWGraphs has the advantage to be very straight-forward to use and pretty flexible (and it runs locally, so without risk for sensitive data): copy-paste data from strucured documents and choose the type of visualizations among several different options. You can later export and/or embed your visualization.
DataBasic.io is a suite of 4 easy-to-use web tools for beginners that introduce concepts of working with data.
> wordcounter and samediff enable you to look what's in text files, and wtfcsv and connect the dots help visualize csv files. The team also proposes activities to know how to build hypotheses and conduct analyses using these tools.
Data Illustrator aims to make non-interactive visualization/infographics. It relies on principles of illustration tools like Adobe Experience Design / Illustrator. The website presents tutorials to help getting started with the basic concepts and tools to create visualizations.