Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
SocialPilot - SocialPilot is an app designed to help businesses and professionals with social media marketing.
OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
Standard Notes - A safe place for your notes, thoughts, and life's work
Fomo - Fomo turns your site into the online equivalent of a busy store