Signal
- Free • Open Source
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- Google Chrome
- Ubuntu Touch
...
Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or attachments all with complete privacy. The server never has access to any of your communication and never stores any of your data.
* Say Anything - Send high-quality group, text, picture, and video messages, all without SMS and MMS fees.
* Speak Freely - Make crystal-clear phone calls to people who live across town, or across the ocean, with no long-distance charges.
* Be Yourself - Signal uses your existing phone number and address book. There are no separate logins, usernames, passwords, or PINs to manage or lose.
* Stay Secure - We cannot hear your conversations or see your messages, and no one else can either. No exceptions. You can even tap and hold on a contact's name to see advanced identity verification options. Everything in Signal is always end-to-end encrypted and painstakingly engineered in order to keep your communication safe.
* Go Fast - Signal is optimized for speed without compromise. Our state-of-the-art Axolotl protocol is unmatched in its performance, strength, and reliability.
* Remain Connected - Push notifications let you know when new messages have arrived, and they'll be waiting for you even if your battery dies or you temporarily lose service.
* Get Organized - Unique archive functionality makes it easy to keep track of the conversations that matter to you right now.
* Pay Nothing - Signal is supported by a team of dedicated developers, community donations, and grants. There are no advertisements, and it doesn't cost anything to use.
* View Source - All of our code is free, open, and available on GitHub (https://github.com/signalapp).
* Join Movements - Technology developed by Open Whisper Systems is trusted and used by millions of people around the world every day.
* Say Anything - Send high-quality group, text, picture, and video messages, all without SMS and MMS fees.
* Speak Freely - Make crystal-clear phone calls to people who live across town, or across the ocean, with no long-distance charges.
* Be Yourself - Signal uses your existing phone number and address book. There are no separate logins, usernames, passwords, or PINs to manage or lose.
* Stay Secure - We cannot hear your conversations or see your messages, and no one else can either. No exceptions. You can even tap and hold on a contact's name to see advanced identity verification options. Everything in Signal is always end-to-end encrypted and painstakingly engineered in order to keep your communication safe.
* Go Fast - Signal is optimized for speed without compromise. Our state-of-the-art Axolotl protocol is unmatched in its performance, strength, and reliability.
* Remain Connected - Push notifications let you know when new messages have arrived, and they'll be waiting for you even if your battery dies or you temporarily lose service.
* Get Organized - Unique archive functionality makes it easy to keep track of the conversations that matter to you right now.
* Pay Nothing - Signal is supported by a team of dedicated developers, community donations, and grants. There are no advertisements, and it doesn't cost anything to use.
* View Source - All of our code is free, open, and available on GitHub (https://github.com/signalapp).
* Join Movements - Technology developed by Open Whisper Systems is trusted and used by millions of people around the world every day.
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Features Vote on or suggest new features
- End-to-End Encryption
- Security focused
- Encrypted chat
- Privacy-friendly
- Ad-free
- Privacy focused
- Video/Audio Calling
- SMS Messaging
- Encrypted Connection
- Video calling
- Private messaging
- Voice Call
- Stickers
- Video chat
- Self destructing messages
- Centralized model repository
- Encrypted VoIP calls
- Forward Secrecy
- Secure Chat
- Voting
Comments and Reviews Post a comment / reviewSort: relevance • date
Categories
Social & Communications • Security & Privacy • File SharingPlatform details
Linux: Debian-based distros only
Google Chrome: Beta.
Tags
- Security & Privacy
- secure-messaging
- contacts-integration
- encrypt-text
- zrtp
- Smartphone Messaging
- strong-encryption
- typing-indicator
- always-running
- Chat
- encrypt-voice
- Instant Messaging
- video-chat-encrypted
Lists containing Signal
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Signal
Summary and Relevance
Our users have written 22 comments and reviews about Signal, and it has gotten 711 likes
- Developed by Signal Messenger LLC
- Open Source and Free product.
- Average rating of 3.9
- 170 alternatives listed
Popular alternatives
View allSignal was added to AlternativeTo by on Feb 16, 2011 and this page was last updated Jan 18, 2021. Signal is sometimes referred to as TextSecure, RedPhone.
Regardless of who endorses him, Moxie is hostile to anyone that threatens his control over the project. He also has a very high opinion of the Google Play store despite that coming with Google's ToS and Google Play Services. He does everything he can to shutdown alternative modes of distribution. I would read this before installing and contributing to Signal's userbase, especially if open source and/or F-Droid are things you care about.
I am not an expert but i appreciate the thought that you put into your criticism. Most importantly i appreciate the alternatives that you listed. I'm checking into Tox right now.
Reply written more than a year ago
You need to give to the company signal your private phone number..
I love Signal because of the automatic end-to-end encryption. Even though Whatsapp now has that, too, I still prefer Signal because it's more transparent about key handling. I would love them to add an opportunity to use it without a phone number. This is the only thing I don't like because you can't stay anonymous when using Signal.
This requires a phone number for verification which forces users to enter a phone number, no one is using it actually, and this isn't an anonymous messenger, and as like other companies they collecting data as well, nothing so special about it.
So basically this FOSS app is great if you can afford it