HTMLArea 4 is a browser based WYSIWYG editor that easily replaces the TEXTAREA in your web pages. It is written in JavaScript, and suitable for use in any modern web browser, and any page on your web site. Current version is 4.0-2016-08-29
Create hyperlinks just by dragging, find contacts instantly, ...
GNU Hyperbole (pronounced Ga-new Hi-per-bo-lee), or just Hyperbole, is an amazing programmable hypertextual information management system implemented as a GNU Emacs package. This is the first public release in 2016. Hyperbole has been greatly expanded and modernized for use with the latest Emacs 25 releases; it supports GNU Emacs 24.4 or above. It contains an extensive set of improvements that can greatly boost your day-to-day productivity with Emacs and your ability to manage information...
Boarded is a virtual on-screen keyboard for the X11 window system. It's intended to be used on mobile devices without a hardware keyboard. It allows you to design your own keyboard layouts, specifying key positioning/grouping and setting own colors.
A module for python/pygame used for typesetting text to the screen.
It provides specialized functions for scrolling text, pages of text, selectable text, and an on screen text editor.
...Keyano has the ability to turn your PC into a Musical Keyboard, or select Alphabet mode and it becomes fun and educational for the Kids. Type "A B C" and it says them out loud while it shows letters on screen
TeXPerfect plans to be a cross-platform, extensible, user-friendly yet expert-tunable visual TeX implementation. The most important feature will be a split screen (inspired by WordPerfect(R) Reveal Codes) showing the underlying TeX code.