An extensible, customizable, free/libre text editor — and more.

Joplin

by laurent22

Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks

ChaBox

by huanguan1978

A 100% offline, open-source file encryption and secure diary app powered by ChaCha20-Poly1305. Built with zero ads, zero tracking, and no network dependencies, it serves as a secure mobile companion for protecting your private data.

Markor

by gsantner

A text editor and note-taking app for Android devices, offering features like Markdown support and file organization.

Quillpad

by quillpad

Take beautiful markdown notes and stay organized with task lists. Fork of Quillnote