Alternatives to Telephone for all platforms with any license

Signal

TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in...

Free Open Source Mac Windows Linux Android iPhone ... Android Tablet iPad Chrome
End-to-end encryption Encrypted chat Security focused Texting ... Encrypted calls Encrypted Connection Self destructing messages Video calling Voice Call Built-in File transfer Color coding Encrypted VoIP calls Forward Secrecy Group chat Mobile friendly Works Offline Protected by Password Based on phone number Privacy focused Privacy Protection Private messaging File Sending Voice messages Add a feature

375 Like
Jitsi

Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM...

Free Open Source Mac Windows Linux Web Android ... BSD
End-to-end encryption Group chat iPhone/iPod sync Support for Multiple protocols ... Multiple Account support OTR Video calling WebRTC Add a feature

278 Like
Linphone

Linphone is an internet phone or Voice Over IP phone (VoIP). With Linphone you can communicate freely with people over the internet, with voice, video, and text instant...

Free Open Source Mac Windows Linux Web Windows Mobile ... Android iPhone Android Tablet Windows Phone iPad Xfce
Encrypted VoIP calls Video calling Add a feature

102 Like
YakYak

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

Free Open Source Mac Windows Linux Hangouts
Portable Add a feature

17 Like
Zoiper

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...

Free Personal $ $ $ Mac Windows Linux Web Android ... iPhone Windows Phone
No features added Add a feature

22 Like
Nimbuzz

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

Freemium Mac Windows Web Android iPhone ... Java Mobile S60 HP webOS Blackberry Android Tablet Windows Phone iPad Chrome Kindle Fire
Voice Call Add a feature

117 Like
MicroSIP

MicroSIP is a free portable SIP softphone for Windows based on PJSIP stack. It allowing to do high quality VoIP calls (P2P or on regular telephones) via open SIP...

Free Open Source Windows PortableApps.com
No features added Add a feature

17 Like
X-Lite

Combining voice calls, video calls and Instant Messaging in a simple interface, CounterPath's X-Lite helps you seamlessly transition from a traditional phone...

Commercial Mac Windows
Video calling Voice Call Add a feature

19 Like
Bria

Thoughtfully designed, Bria 5 leverages over 10 years of softphone experience in improving productivity for our customers.

Commercial $ $ $ Mac Windows Android iPhone Android Tablet ... iPad
Daylite integration Call Transfer Voice Call Add a feature

2 Like
3CX Phone System

3CXPhone is a free VoIP phone available for Windows, iPhone or any Android based smart phone such as Google Nexus, Sony Xperia, Motorola Droid or Samsung Galaxy. Connect...

Freemium Windows Android iPhone
No features added Add a feature

8 Like
Phoner

Softphone for VoIP, CAPI und TAPI. This application enables voice connections to landline, cellular network and VoIP. Phoner can be used as softphone on stationary and...

Free Windows
No features added Add a feature

13 Like
Starfish PBX

Starfish PBX aims to be an open source alternative to Digium’s Switchvox. The goal is to have a software equivalent to which we can add additional functionality like: ...

Free Open Source Linux
No features added Add a feature

2 Like
YateClient

YateClient is an Instant Messenger and a SoftPhone.

Free Mac Windows Linux
No features added Add a feature

3 Like
Chatzy

Chatzy is a free private chat service which you can use to communicate with people you already know or people who visits your blog or website. With Chatzy you can create...

Free Web
No installation No registration required Add a feature

4 Like
Spreed

Spreed is the worldwide unified web conferencing service offering integrated web and telephone conferencing. It is based on Flash Player. Free service includes 3...

Commercial Mac Windows Linux Web
Share your screen Add a feature

8 Like