• Skype icon

    Skype

    Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice call...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Blackberry Chrome OS Windows RT Android Tablet BSD Windows Phone iPad Apple Watch Android Wear

  • Telegram icon

    Telegram

    Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful.

    Free Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet Windows Phone iPad Apple Watch Android Wear

  • Hangouts icon

    Hangouts

    Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice calls – one...

    Free Windows Web / Cloud Android iPhone Chrome OS Android Tablet ... iPad Chrome Android Wear

  • WhatsApp Messenger icon

    WhatsApp Messenger

    WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS....

    Free Mac Windows Web / Cloud Android iPhone S60 ... Blackberry Android Tablet Windows Phone Blackberry 10 Android Wear Kindle Fire

  • Tox icon

    Tox

    Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

    Open Source Mac Windows Linux Android iPhone Android Tablet ... BSD

  • Viber icon

    Viber

    Viber is a mobile application that lets you make free phone calls and send text messages to anyone who also has the application...

    Freemium Mac Windows Linux Android iPhone Windows RT ... Android Tablet Windows Phone iPad Blackberry 10 Apple Watch

  • Jitsi icon

    Jitsi

    Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols...

    Open Source Mac Windows Linux Web / Cloud Android BSD

  • Facebook Messenger icon

    Facebook Messenger

    Facebook Messenger is a faster way to message. Reach friends right on their phones, get and send messages fast, message everyone at...

    Free Windows Web / Cloud Android iPhone Blackberry Android Tablet ... iPad Apple Watch Android Wear

  • Trillian icon

    Trillian

    Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Blackberry iPad

  • Linphone icon

    Linphone

    Linphone is an internet phone or Voice Over IP phone (VoIP). With Linphone you can communicate freely with people over the internet...

    Open Source Mac Windows Linux Web / Cloud Windows Mobile Android ... iPhone Blackberry Android Tablet BSD Windows Phone iPad Blackberry 10 Xfce

  • LINE icon

    LINE

    LINE is a Japanese proprietary application for instant messaging on smartphones and PCs. Line users exchange text messages, graphics...

    Freemium Mac Windows Web / Cloud Android iPhone Blackberry ... Android Tablet Windows Phone iPad Apple Watch

  • Empathy icon

    Empathy

    Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You can tell...

    Open Source Linux BSD

  • Know any more alternatives to Signal?

    Suggest an application to this list
  • Imo icon

    Imo

    Message and video chat with your friends and family for free. Features - Make high-quality video and voice calls on Android and...

    Free Windows Android iPhone Android Tablet iPad

  • ICQ icon

    ICQ

    ICQ is one of the oldest instant messengers. First developed by the Israeli company Mirabilis, sold to AOL, sold again and currenly...

    Free Mac Windows Linux Web / Cloud Windows Mobile Android ... iPhone Java Mobile S60 Blackberry Android Tablet Windows Phone iPad Kindle Fire

  • ChatSecure icon

    ChatSecure

    [ChatSecure by Chris Ballinger and Gibberbot by The Guardian Project have combined efforts!] ChatSecure (formerly “Gibberbot”) is...

    Open Source Android iPhone iPad

  • WeChat icon

    WeChat

    WeChat is the complete mobile communication and private social networking app. Free, cross-platform, and full-featured, WeChat is the...

    Freemium Mac Windows Android iPhone S60 Blackberry ... Android Tablet Windows Phone iPad Apple Watch

  • Yahoo! Messenger icon

    Yahoo! Messenger

    Stay in touch with your friends and family while sharing favorite photos using one of the most popular instant messaging applications

    Free Web / Cloud Android iPhone Blackberry

  • Bitmessage icon

    Bitmessage

    Bitmessage is a P2P communications protocol used to send encrypted messages to another person or to many subscribers. It is...

    Open Source Mac Windows Linux BSD

  • Share this list of alternatives?

  • Wire icon

    Wire

    Wire is a secure, private and open source messenger for phones, tablets and desktop. Crystal clear voice and video calls, private...

    Open Source Mac Windows Web / Cloud Android iPhone Chrome OS ... Android Tablet iPad

  • Apple Messages icon

    Apple Messages

    Love iMessage on your iPhone? You'll love it on your Mac, too. Messages lets you send unlimited messages to anyone on a Mac, iOS...

    Free Mac iPhone iPad Apple Watch

  • Threema icon

    Threema

    Threema is a new mobile messaging app that puts security first. With true end-to-end encryption, you can rest assured that only you...

    Commercial Android iPhone Android Tablet Windows Phone iPad Android Wear

  • Kik icon

    Kik

    Get Kik Messenger for free and enjoy unlimited texting to all Kik users worldwide, no matter what type of smartphone they're into....

    Free Android iPhone S60 Windows Phone Kindle Fire

  • IM+ icon

    IM+

    Chat everywhere! IM+ is the most widely used mobile IM app! Connect all-in-one to MSN, Yahoo!, Google Talk, AIM, Jabber, ICQ...

    Freemium Web / Cloud Windows Mobile Android iPhone Java Mobile S60 ... HP webOS Blackberry Android Tablet Windows Phone iPad Kindle Fire

  • Riot.im icon

    Riot.im

    Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both public...

    Open Source Web / Cloud Android iPhone iPad Self-Hosted Chrome ... Safari Firefox

  • Nimbuzz icon

    Nimbuzz

    Nimbuzz offers limited availablility free calls and limited availability free text messaging for users via 3G and WiFi. Calls to other...

    Freemium Mac Windows Web / Cloud Android iPhone Java Mobile ... S60 HP webOS Blackberry Android Tablet Windows Phone iPad Chrome Kindle Fire

  • Path icon

    Path

    Path is a personal social network designed to help you be closer with family and friends. Now with Path 3, we’ve added private...

    Free Web / Cloud Android iPhone Android Tablet Windows Phone iPad ... Kindle Fire

  • Ekiga icon

    Ekiga

    Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323...

    Open Source Windows Linux

  • Conversations icon

    Conversations

    Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved easy...

    Freemium Android Android Tablet Self-Hosted

  • CSipSimple icon

    CSipSimple

    csipsimple will allow native sip for android device. It relies on the pjsip SIP stack and use the pjsip-jni project. The use of...

    Open Source Android

  • Kontalk icon

    Kontalk

    Kontalk is an open source replacement for WhatsApp. Server and client software are open and hosting your own server is possible but...

    Open Source Android Self-Hosted

  • Bit Chat icon

    Bit Chat

    Technitium Bit Chat is a secure, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. It can...

    Open Source Windows Linux

  • BlackBerry Messenger icon

    BlackBerry Messenger

    BlackBerry Messenger is a FREE messaging app available for Blackberry, iOS, Android and Windows Phone. BBM has unique features to...

    Freemium Android iPhone Blackberry Android Tablet Windows Phone iPad ... Apple Watch Android Wear Kindle Fire

  • KakaoTalk icon

    KakaoTalk

    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....

    Freemium Mac Windows Android iPhone Blackberry Windows Phone ... Android Wear Kindle Fire

  • Actor icon

    Actor

    Actor Messenger is an encrypted messaging created by a former developer of telegram.

    Open Source Mac Windows Linux Web / Cloud Android iPhone ... iPad

  • YakYak icon

    YakYak

    What does it do: * Send/receive chat messages * Create/change conversations (rename, add people) * Leave/delete...

    Open Source Mac Windows Linux

Signal Comments

100% EFF Secure Messaging Scorecard score!

Comment by Geremia16
about Signal 14 days ago

This app got a 100% rating on the EFF's Secure Messaging Scorecard.

WhatsApp and Telegram are not completely open and are not as secure as Signal!

Reply

Alternatives? Maybe? Maybe not?

Comment by tuuli85
about Signal Jul 2015

The alternatives listed to RedPhone aren't exactly used for the same purpose as this app. Sure, many of them allow you to make encrypted phonecalls (right?) but not in the exact same way. I wouldn't call them alternatives but that's just me.

Reply

Love it!

Comment by Babbajan
about Signal Jan 2013

RedPhone is really awesome app. I use it with textsecure also.

Reply