Orgzly - Outliner for notes, tasks and to-dos
UV Outliner - UV Outliner is a small and powerful single-pane outliner.
Volume Control Panel Pro - Volume Control Panel Pro is an efficient mobile app that enables its users to control the volume of the system conveniently.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Notes Taking - Notes Taking app contains features to enable you to take your note-taking experience to a whole new level by getting complete control of your digital notes.
Planka - Planka is an open source project management software similar to Trello.