Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
Responsive Website Test - Test any website on desktop, mobile, and tablet
TextMe - TextMe is a free calls and messaging application at both local and international levels.
Responsive Viewer - View multiple screen dimensions in one view
Talkatone - Android App on. Google Play. Stop paying for cell minutes, texts & landlines; Turn your iPad or iPod touch into a phone; Call/Text even in areas with bad cell coverage; Call/Text when travelling without paying for expensive international minutes.
LT Browser by Lambdatest - LT Browser is a free dev friendly browser for developers and testers. You can see mobile view of website on different screen sizes and resolution on 50+ pre installed view ports. You can build, test and debug your website faster then ever.