MicroSIP is not available for iPhone but there are plenty of alternatives with similar functionality. The best iPhone alternative is Jitsi, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to MicroSIP and 16 are available for iPhone so hopefully you can find a suitable replacement. Other interesting iPhone alternatives to MicroSIP are Wire (Free Personal, Open Source), Linphone (Free, Open Source), Zoiper (Free Personal) and Bria (Paid).
Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR, ZRTP, etc.
Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most secure end-to-end-encryption. Why Wire?
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Wire vs MicroSIP opinions
pros, cons and recent comments
TristisOris its not a SIP client, its PAID social network.
Linphone is one of the most famous open source softphones in the world. It is fully SIP-based, for all calling, presence and IM features. Use Linphone for free, and enjoy its intuitive interface and advanced features with our free SIP service or with an existing SIP account.
Thoughtfully designed, Bria 5 leverages over 10 years of softphone experience in improving productivity for our customers. Stay in your tool of choice and still have access to the power of Bria. Feel like you are in the same room regardless of where you are.
With a superbly designed and intuitive user interface, the softphone offers easy set up with lots of preconfigured VoIP providers built in and smart call management features. Enjoy high quality enterprise communication features with zero effect on battery life.
Line2 is a VoIP phone service that lets you call & text from a separate phone number via WiFi or 3G/4G/LTE. At a small premium, Text & call ANYONE in the US/Canada, forwarding & more. Pick any phone number.
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 create their own public virtual chat room.