You can invite someone to Signal using the "Invite Friends" menu in the app, which will send a text message or email.

You can add new contacts to WhatsApp manually from the Chats tab or you can scan someone's QR code within the app.

Zoho’s homegrown instant messaging and calling app, Arattai, is rapidly gaining popularity on both the App Store and Google Play in India. Designed as a communication platform developed in Chennai, ...