MyNotex is a free software for Gnu/Linux useful to take and to manage textual notes, also a large number of them. Notes are gathered under different subjects and are made by a title, a date, a tags (keywords) list and a free-length text. This may be formatted: it is possible to change the font name, size and color of a selected text and of its background, and also to set bold, italic, underline and strike-through; the text may have pictures within it. The software can manage paragraph alignment, bullets and numbered lists with automatic indentation. A single file of MyNotex contains various subjects and notes.