31 Like Asterisk Good alternative? YES NO Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PBX, VoIP gateway, IVR and ACD. Free Open Source Mac Windows Linux Low level Add a feature
12 Like YakYak Good alternative? YES NO What does it do: * Send/receive chat messages * Create/change conversations (rename, add people) * Leave/delete conversation * Notifications * ... Free Open Source Mac Windows Linux No features added Add a feature
15 Like MicroSIP Good alternative? YES NO 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
5 Like freepbx Good alternative? YES NO FreePBX is a web-based open source GUI (graphical user interface) that controls and manages Asterisk (PBX), an open source communication server. Free Open Source Linux Voice Call Add a feature
16 Like Telephone Good alternative? YES NO Telephone is a VoIP program which allows you to make phone calls over the internet. It can be used to call regular phones via any appropriate SIP provider, including... Free Open Source Mac No features added Add a feature
12 Like FreeSWITCH Good alternative? YES NO FreeSWITCH is a scalable open source cross-platform telephony platform designed to route and interconnect popular communication protocols using audio, video, text or any... Free Open Source Mac Windows Linux BSD No features added Add a feature
13 Like Phoner Good alternative? YES NO 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
26 Like Zent.IO Good alternative? YES NO Zent.IO is a Contact Center Cloud Software Multichannel that unify chat, phone and e-mail. All the communication channels will be answered from a single interface. The... Commercial Web Call recording Customer Chat Knowledge base Real time collaboration Add a feature
7 Like Yate - Yet Another Telephony Engine YES NO Yate is a softswitch (concept of separating the network hardware from network software). It supports VoIP protocols: H.323, SIP, IAX1, IAX2, RTP. For the plain old... Free Open Source Linux No features added Add a feature
5 Like Paltalk Good alternative? YES NO Paltalk is an instant messaging service that enables users to communicate via internet chat, voice and video chat. It offers chat rooms and the ability for users to... Freemium Mac Windows Web Android iPhone Kindle Fire Video calling Add a feature
2 Like Wazo Good alternative? YES NO Wazo is a unified communications platform based on Asterisk and focused on extensibility. Free Open Source Mac Windows Linux Self-Hosted Extensible by Plugins/Extensions Add a feature
7 Like Spreed Good alternative? YES NO 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
3 Like YateClient Good alternative? YES NO YateClient is an Instant Messenger and a SoftPhone. Free Mac Windows Linux No features added Add a feature
4 Like Cam Italy Good alternative? YES NO Vieni a conoscere nuovi amici, puoi utilizzare la tua Webcam o Chattare senza. Free Web No features added Add a feature
2 Like kamailio Good alternative? YES NO Kamailio® (successor of former OpenSER and SER) is an Open Source SIP Server released under GPL, able to handle thousands of call setups per second. Among features:... Free Open Source Linux No features added Add a feature
