Brickbox - Customer acquisition tools for indie makers
SendView - The best way to track your competitors' email marketing.
Tiny Acquisitions - Tiny acquisitions is the only marketplace for internet business that are priced under $5,000.
Owletter - Keep an Eye on Your Competitors' Newsletters
Smartlook - Qualitative analytics for websites and mobile apps Start understanding the 'whys' of your users' behaviors with clear, visual insights. With session recordings and event tracking, you get the complete picture.
Competitors App - Competitors App helps marketers monitor their competitors' marketing moves in one place, with very little time investment.