About -> Available Versions -> Version 3.1.x

OpenSIPS 3.1.x is a stable, LTS release. It is recommended for production usage.

OpenSIPS 3.1 Overview - a glimpse in the blueprints of OpenSIPS 3.1 to see what this new release can do for you.
OpenSIPS 3.1.3 is the latest release from the 3.1 branch.

1.  OpenSIPS 3.1.3

Minor release (see Changelog from 3.1.2)
Release date: 22nd of Jun 2021

2.  OpenSIPS 3.1.2

Minor release (see Changelog from 3.1.1)
Release date: 06th of May 2021

3.  OpenSIPS 3.1.1

Minor release (see Changelog from 3.1.0)
Release date: 17th of Nov 2020

4.  OpenSIPS 3.1.0

Release notes: full technical listing
Release date: 22th of July 2020
Beta-Release date : 27th of May 2020