Inbound Rocket - Converts visitors into leads, subscribers & customers
Novocall - Novocall converts web visitors into sales calls in seconds.
ConversionChecklist.org - A 41 point checklist to make your website convert better
Conversion Lab - Get high conversion rates on landing pages
Sheety - Turn any Google sheet into an API instantly, for free. Power websites, apps, or whatever you like, all from a spreadsheet. Changes to your spreadsheet update your API in realtime. Neat
Callpage - Turn website visitors into sales calls. Use CallPage and provide immediate free phone callback to your leads in 28 seconds.