Top Alternatives to Ring

Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.

Pidgin is a free and open-source chat client which supports AIM, Google Talk, ICQ, XMPP protocols.

Hangouts is an instant messaging software developed by Google.

Telegram is a free cloud-based instant messaging platform.

WhatsApp Messenger is an instant messaging platform owned by Facebook.

Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.

Discord is a freeware proprietary VoIP application designed for gaming communities.

Signal is the most scalable encryption tool.

Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.

Empathy is an instant messaging (IM) and voice over IP (VoIP) client which supports text, voice, video, file transfers, and inter-application communication over various IM protocols.

TeamSpeak is software for quality voice communication via the Internet.

IM+ supports simultaneously major IM services, including Google Talk, Twitter DMs, Yahoo!, AIM/iChat, ICQ, Jabber (and Slack through Jabber), etc.

Linphone is a free voice over IP (VoIP) service and SIP client.

LINE is a new communication app which allows you to make free voice calls and send free messages whenever and wherever you are.

RetroShare is open source software for encrypted filesharing, serverless email, instant messaging, online chat, and BBS, based on a friend-to-friend network built on GNU Privacy Guard (GPG).

FaceTime is a proprietary videotelephony product developed by Apple Inc. FaceTime Audio is an audio-only version.

ChatSecure is a messaging application for iOS which allows OTR and OMEMO encryption for the XMPP protocol.

Off-the-Record Messaging (OTR) is a cryptographic protocol that provides encryption for instant messaging conversations.

Bitmessage is a decentralized, encrypted, peer-to-peer, trustless communications protocol that can be used by one person to send encrypted messages to another person, or to multiple subscribers.

CSipSimple is a Voice over Internet Protocol (VoIP) application for Google Android operating system using the Session Initiation Protocol (SIP).

Zoiper is an easy to use sip video softphone, with excellent voice quality and easy to setup.

Otr.to is a browser based chat client.

Blink is the best real-time communications client using the SIP protocol.

Jitsi Meet is an open-source (Apache) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, scalable video conferences.

Bit Chat is a secure, peer-to-peer, open source instant messenger with end-to-end encryption.

Disa is your new messaging hub. Conversations from different services can seamlessly be joined together, or disbanded within seconds.

Silence.im is an encrypted text messaging service.

Dialog Messenger is a handy and feature-rich enterprise multi-device messenger available for server or cloud.

Wickr is an instant messenger application.

Ricochet uses the Tor network to reach your contacts without relying on messaging servers.

Pidgin-Encryption transparently encrypts your instant messages with RSA encryption.

YakYak is a desktop chat client for Google Hangouts.