Open Source REBOL Education Software for Linux

Create and print instant guitar chord diagram charts for songs. Taken from the tutorial at http://re-bol.com

Instantly create customized chord, scale, and arpeggio diagrams of any complexity. Just point and click to add fingerings and labels. Print layouts in seconds. When the program starts, enter the number of frets you want in your diagram. Click any fret on any string to add a dot (finger position). Click any added dot to remove it (change it back to an empty position). Right-Click any fret on any string to add a character of your choice (add finger numbers, root note labels, interval labels, etc.). Click the title text to give the chord/scale/arpeggio a name. Right-Click the title to save the diagram to a .png image. Press the "p" key on your keyboard to create an HTML or Image layout of any selected diagrams you've created. It's fast, Fast, FAST. Create totally customized collections of chord fingerings in seconds for songs, or for specific topics. Perfect for teachers who don't want to waste lesson time drawing grids. VIDEO: http://www.youtube.com/watch?v=VZXlfisNZvM

This tutorial demonstrates how easy it is to accomplish real world programming goals with Rebol. The text aims to teach average users to program computers to do useful things, without the long and difficult learning curve imposed by other languages.

With Slidery, entire presentations are written as essays, using simple markup characters to indicate which elements are displayed in the presentation. Develop slide content naturally, instead of focusing on the mechanics of laying out page displays. Each full presentation is created within a single text file, and that text file can be used for both printed handouts and as the slide presentation source. Enable your audience to understand and process the information being presented, instead of furiously scribbling notes. Slidery can include images and even entire executable programs in a presentation. This allows you to create features which are difficult or impossible in other presentation systems. Slidery runs instantly, without installation, on Windows, Mac, Linux, and Android, as well as on many legacy platforms. The entire system is about 1/2 meg, so you can be sure your presentation will run easily, anywhere there is a computer. VIDEO: http://youtu.be/R9LpFsnMc2w

A scientific calculator written in Rebol