Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Workona - A better way to work in the browser.
Flowbar - Organize your tabs into groups and access them anywhere.
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.
Open Bulk URL - A better version of Bulk URL opener
Session Buddy - Manage Your Browser Sessions