MicroSIP (Lite)

MicroSIP (Lite) 3.22.20

Open source portable SIP softphone based on PJSIP stack for Windows OS.

  • By www.microsip.org
  • Open Source
  • Updated Oct 17, 2026
Download for Windows

About MicroSIP (Lite)

MicroSIP - open source portable SIP softphone based on PJSIP stack for Windows OS.
It allowing to do high quality VoIP calls (person-to-person or on regular telephones) via open SIP protocol. From cloud of SIP providers you can choose best for you, register account and use it with MicroSIP. You'll get free person-to-person calls and cheap international calls.

What's new in 3.22.20

  • improved DTMF tone playback handling
  • do not play DTMF tones locally during calls
  • improved handling of call history database errors
  • fixed an issue that caused microphone audio to be muted
  • fixed outgoing calls where P-Asserted-Identity (PAI) replaced the originally dialed extension
  • added P-Asserted-Identity (PAI) to the technical information displayed in Call Manager for outgoing calls
  • improved call setup and call state display
  • improved timer resolution handling to reduce unnecessary use of 1 ms timers
  • fixed keyboard shortcuts not working while the application menu was open
  • added detection of memory corruption caused by faulty audio devices or drivers; some problematic audio devices may no longer work with MicroSIP
  • improved stability in certain use cases

Full release notes »

Technical details

Publisherwww.microsip.org
Version3.22.20
Release date2026-10-17
LicenseGPL-2.0
Installer typenullsoft
Architecturex86
Package IDMicroSIP.MicroSIP.Lite

Links & install command

Install MicroSIP (Lite) from the command line with Windows Package Manager (winget):

winget install --id=MicroSIP.MicroSIP.Lite -e

pbxsipsoftphonetelephonetelephony

Older versions

  • 3.22.19
  • 3.22.18
  • 3.22.16
  • 3.22.12
  • 3.22.11
  • 3.22.10
  • 3.22.9
  • 3.22.7
  • 3.22.6