Chrome Extensions

Note:Extensions can slow down your browser, so make sure you stick to what you think will be most useful
Waste No TimeBlocking time-wasting sites while you are working  
Stay Focused StayFocused increases your productivity by limiting the amount of time that you can spend on time-wasting websites.
Personal BlocklistBlocks domains/hosts from appearing in your Google search results.
F.B. (Fluff Blasting) PurityF.B. Purity cleans up and customizes Facebook, letting you filter out the junk you don't want to see (works awesome!)

You can also add Chrome Apps that are then available at chrome://apps/
Kindle Cloud Reader  - links with your Kindle account 
Todoist -  To Do List and Task Manager 
Wunderlist - To Do List and Task Manager - links with account to be used across devices