Novocall - Novocall converts web visitors into sales calls in seconds.
OptinMonster - OptinMonster helps to convert abandoning website visitors into subscribers and customers.
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.
Cavako - Convert more site visitors into leads and sales
Convertify - Convert your website to an iOS and Android app