Redact is described as 'The world's first totally secure instant messenger application' and is a instant messenger in the social & communications category. There are more than 100 alternatives to Redact for a variety of platforms, including Android, iPhone, Windows, Mac and Web-based apps. The best Redact alternative is Signal, which is both free and Open Source. Other great apps like Redact are Telegram, Discord, Tox and WhatsApp.
Offers free global video and voice calling, group chat with up to 50 participants, in-app messaging that bypasses SMS plans, music clip sharing via Spotify, photo editing, gaming and gifts, animated messages, mini-games during calls, and centralized media gallery.
textPlus is the best way to send unlimited text messages from your android, iPhone, iPod, kindle, and windows devices with your textPlus phone number free and calling for just pennies.
Line2 is a VoIP phone service that lets you call & text from a separate phone number via WiFi or 3G/4G/LTE. At a small premium, Text & call ANYONE in the US/Canada, forwarding & more. Pick any phone number.
Zoiper IAX & SIP multilanguage and multiplatform (Windows, Linux and Mac OS X) softphone is a VoIP soft client, meant to work with any IP-based communications systems and infrastructure.
Tribe is the easiest way to message. Just press and hold to record a message. Release to send.
Open source anonymous, registration free P2P chat. You communicate directly and no logs are saved on the server. Otr.to is browser based, which means that you don't need to install or ask somebody to install software.
Finch is a console-based IM program that lets you sign on to AIM, Jabber, MSN, IRC, Yahoo!, and other IM networks. It runs on Unixes. It uses GLib and ncurses.
KakaoTalk is a phone number based messenger service that allows users anywhere in the world to chat one-to-one or in a group for free. (no SMS service)
Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration with other people.
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