Free Apps with 'WYSIWYG Support' feature for Windows
A digital notebook application that gives people one place to gather notes and information. .
An open source note taking and to-do application with synchronisation capabilities.
a markdown editor, markdown reader.
A desktop personal wiki with inline preview as-you-type and lots of plugins.
Standard Notes is a simple and private notes app. It allows you to write and sync your notes across all your devices, including your iPhone, iPad, Mac, and web browser.
IntelliJ IDEA is a free / commercial Java IDE by JetBrains. Its design is centered on programmer productivity.
Dia is a GTK+ based diagram creation program for Linux, Unix, Mac OS X and Windows released under the GPL license.
MuseScore is a free music notation and composition software available for Linux, Windows and Mac. .
Mark Text is a Markdown editor for Mac, Windows and Linux. It is a concise text editor, dedicated to improving your editing efficiency.
Sigil is a multi-platform ebook editor. It is designed to edit books in ePub format.Sigil is a multi-platform EPUB ebook editor with the following features
Nuclino is the easiest way to organize and share knowledge in teams. Create real-time collaborative documents and connect them instantly like a wiki.
An HTML editor based on Mozilla rendering engine. Supports some CSS3 features and since recently has a built-in SVG editor.
Google Web Designer is a a program from Google for creating interactive HTML5 ads and other HTML5 content for any device.
MyTetra is open source and cross platform personal manager for information accumulation. It is powerful program for data memorization and structuring notes.