Markdown New Tab - Write notes in Markdown directly in the 'New Tab' page

Workona - A better way to work in the browser.

NotesHub - Fully cross-platform, markdown based note-taking app

OneTab - Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.

NotePlan - Make plans inside an individual markdown note for every day in your calendar. Use it as a journal for your daily tasks and plan todos in advance. For Mac, iPhone and iPad.

Session Buddy - Manage Your Browser Sessions