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Add to SafariWhen comparing Signal vs Linphone, the Slant community recommends Signal for most people. In the question“What are the best Skype alternatives?” Signal is ranked 3rd while Linphone is ranked 14th. The most important reason people chose Signal is:
Signal uses an advanced end to end encryption protocol that provides privacy for every message every time.
Specs
Question Ranking
Pros
Pro Provides security and privacy
Signal uses an advanced end to end encryption protocol that provides privacy for every message every time.
Pro Free and open source
Signal is free and open source software, enabling anyone to verify its security by auditing the code. It's the only private messenger that uses open source, peer-reviewed cryptographic protocols to keep your messages safe.
Pro Supports encrypted group chats
Pro Has a desktop app
Signal Desktop can be used on multiple devices and has most features of the Android version, although it still requires you to register with your phone.
Pro Supports sharing of various different media types
Signal supports: emoji, pictures, videos, audio, contacts, any location and GIF.
Pro Note to Self feature
Allows you to "send: messages to yourself and sync to desktop so you can use Signal as a kind of encrypted Pushbullet alternative
Pro You can easily view all media exchanged
You can easily view all media shared in the chat without scrolling back to when it was shared.
Pro Annonymous Sender (Encrypted)
The sender credentials can be encrypted with the rest of the message, leaving only the recipient address readable by the Signal server. Even if Signal wanted they couldn't see who is talking with who by this mean.
Pro Works everywhere in every country
Unlike most messenger apps, Signal works reliably in all countries by securely circumventing internet censorship.
Pro Recommended by Edward Snowden
Edward Snowden uses this messenger and recommends it to everyone who is concerned about his privacy.
Pro FOSS
Free and Open Source.
Pro Work well with FritzBox router
Pro Great SIP support
Basically every SIP provider supported.
Pro Simplistic and clean UI
Over the years, its UI has changed and improved by a lot.
Cons
Con Needs access to your phone number and contacts to work
Con Single device
Signal can only be registered to one mobile device at a time. But you can link Signal to Signal Desktop.
Con Servers hosted in the US
A security risk due to National Security letters, which require giving up data to the US state, and making it illegal to disclose that.
Con Unreliable notifications
Sometimes messages won't be received if the Signal app has been closed for a long time or hasn't been opened after booting the device.
Con UI not very intuitive
Implementation of Contacts and missing calls are not very intuitive.
Splitted View (left Contacts, right Call-History) would be much better as current look&feel.
UI don't mind the "less clicks are better" philosophy. It looks a bit thrown together. Some Icons here, some there.. no navigation strategy are used (like known from webpages)
Con Limited to flatpack installs
Yet another container service to keep up with.
Con Doesn't ring on incoming calls
Even if the Audio-File exists and can be played in the Settings-Dialog, it doesn't ring for an incoming call. Worked some time ago, currently not.
Con No Plugins available to add external Address-Books for contacts
would be nice to be able to add NextCloud, GoogleContacts or other Cloud-Services, or just an local Address-Book (like Thunderbird)
Con Up-to-date version in 2020 can only be compiled from source
There is either an outdated version in Ubuntu repos, official flatpak install has been broken for over 6 months, so you're left with compiling from source.
