Notes

Notejot is a free and open source, simple program for creating short notes and writing ideas

Simple Diary is a free and open source, simple and lightweight program for keeping a diary

QOwnNotes – free and open source, multi-platform note-taking program with Markdown support and Nextcloud/ownCloud integration

Notable – free multi-platform program for creating notes based on Markdown markup

oStorybook is a free and open source tool for writing fiction: novels, novellas, short stories, and screenplays

NoteCase Pro – free and open source, cross-platform software for organizing notes

Tusk – free cross-platform unofficial open source Evernote desktop client

CherryTree – free and open source software for creating hierarchical notes

Indicator Stickynotes – free and open source software for creating notes on the desktop

OutWiker – free and open source, multi-platform software keeping notes in a tree