What are some alternatives?
When comparing Toby and OneTab, you can also consider the following products
Workona - A better way to work in the browser.
Session Buddy - Manage Your Browser Sessions
Tabs Outliner - Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Tabbie - The missing tab manager for Chrome
Tree Style Tab - Tree Style Tab is an all-in-one Firefox extension that provides ability in order to operate tabs as a tree.