Open Source Android To-Do Lists Apps

Joplin is a free and open source note-taking and to-do application that can handle a large number of notes in Markdown format, organize them into notebooks and synchronize them with various cloud services. All notes can also be copied, tagged, searched and modified directly from the app or through your own text editor. Notes that are exported from Evernote can be imported into Joplin, be it formatted content, resources, complete metadata or plain Markdown files. When notes are synchronized with cloud services, notebooks, tags and other metadata can easily be moved, inspected or backed up as plain text files. Supported cloud services include Nextcloud, OneDrive, Dropbox and WebDAV. Joplin is available for Windows, Linux, macOS, iOS and Android, with three types: desktop, mobile and terminal. All of them have similar user interfaces and can be synchronized with each other.

Omni-Notes is a powerful open-source note-taking application for Android designed to be both smart and simple. It has a clean and simple Material Design interface and is packed with plenty of smart features. These include image, audio and generic file attachment, a To-do list, Google Now integration, numerous widgets and so much more. Omni-Notes takes note-taking to a whole new level, making it more convenient and integrated. It's an ideal note-taking application particularly for old Android phones without such apps, giving users an updated look and experience when taking down notes.

Lifeograph is a diary program to take personal notes on life. It has all essential functionality expected in a diary program and strives to have a clean and streamlined user interface.

Apps notes for Windows, iOS and Android, with direct local sync. The server is a Windows application so you need to run it for sync. If you want to leave the old date when editing a note then on mobile phones you need to click on the date and on the PC hold down the "Shift" key when you click on the done button. How to install and other things - https://github.com/r57zone/EasyNotes

A basic PDA function written for Android-based phones, this To Do app lets you categorize and prioritize checklists, assign due dates and alarms, set highly configurable recurring tasks, and add detailed notes to items.

A simple, open source 'To-Do' application for Android, with an emphasis on minimalism. Available free on GooglePlay, for Android 4.0.1 and up.

An Android client for the Todoist online task management service.

JTrac toolkit: WebServices , Eclipse Plug -in and for Android phones

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A free and open-source, fully customizable task manager for Android. Full-featured version on about June 2019. For contributing, see file TODO inside the repository root. TaskMan is licensed under GNU GPL version 3 or later; see LICENSE file inside the repository root. Android is a trademark of Google LLC in the United States and/or in other countries.