Joindesk - Open source project management tool
GetSiteControl - Website popup builder & email marketing suite for ecommerce
Google Analytics by SumoMe - The easiest way to see your Google Analytics
Yeps! - All-in-one bar for your website
Nifty - Manage projects, work, and communications in one place.
OptinMonster - OptinMonster helps to convert abandoning website visitors into subscribers and customers.