Ghostnote is described as 'adds contextual notes to almost anything on your mac. Add notes & todos to folders, applications, open documents, even websites. Think about it as post-it-notes for your OS' and is an app in the Office & Productivity category. There are more than 100 alternatives to Ghostnote for a variety of platforms, including Windows, Mac, Online / Web-based, Android and iPhone. The best alternative is Joplin, which is both free and Open Source. Other great apps like Ghostnote are Standard Notes (Freemium, Open Source), Google Keep (Free), Microsoft OneNote (Freemium) and Evernote (Freemium).
Bookmark Sidebar is an extension for Chrome, which adds a toggleable sidebar with all your bookmarks on the left or right side of your screen. You can sort, edit, delete or rearrange your bookmarks easily from within the sidebar.
Quip is a modern word processor that enables you to create beautiful documents on any device, including the iPad, iPhone, and the desktop. It combines documents and messages into a single chat-like “thread” of updates — making collaboration easy.
RightNote will help you get a grip on information overload. It is designed to be easy to use for the new-comer, but also provide advanced features once your notes start to accumulate. RightNote can store text notes, source code, spreadsheets and webpages.
Start writing your thoughts and memories and have them synced and backed up in the cloud. glimpses use Dropbox syncing capabilities to sync all your entries. It stores your data at Dropbox service. Just authorize with Dropbox and you're ready to go.
Tracks is a web-based application to help you implement David Allen’s Getting Things Done™ methodology. It was built using Ruby on Rails, and comes with a built-in webserver (WEBrick), so that you can run it on your own computer if you like.