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OnSIP brings your business phone to you, whether you’re at the office, at a client’s site, or working remotely. Connect with customers, partners, vendors, and coworkers from your OnSIP account on any computer.

With OnSIP, you can take advantage of standard business phone features without any hardware. Make and receive HD voice and video calls, monitor contact availability, and check recent call history on your desktop in one simple interface. Plus, get access to team collaboration tools like instant messaging and video conferencing.

  • Phone number, extension, and SIP address

What's New

Version 1.9.1:
  • Type in the new call box and a search box will appear, listing contacts, and directory members.
  • Our Slack integration now uses Slack’s Conversations API to receive all necessary information from Slack. This fixes presence information and unread message checking, while also removing API calls that Slack is deprecating.
  • On the


  • OS X 10.9 or later

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OnSIP User Discussion


Current Version (1.x)


Downloads 414
Version Downloads 199
License Free
Date 08 Feb 2018
Platform Intel 64 / OS X
Price Free
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