OpenStack, the open source cloud platform, has witnessed the release of version 5, which is codenamed "Essex".
The move comes in the same week that Citrix declared its intention to push CloudStack, an open source rival to OpenStack, following the company's acquisition of Cloud.com in the middle of last year.
OpenStack isn't to be deterred, though, and the Essex version comes with no less than 150 enhancements and new features, developed over the past six months.
Some 200 developers from 55 companies have contributed code to version 5 of OpenStack, which contains the first full releases of both the Keystone identify authentication system components, and the user interface dashboard Horizon.
It also boasts a number of improvements and stability fixes to the Glance image, Swift object storage, and Nova compute services.
Jonathan Bryce, a member of the OpenStack Project Policy Board, was quoted by ZDNet UK as stating: "I think OpenStack came from a service provider background and that was its legacy and it's been deployed quite a bit in that regard, but in Essex we've added a lot for enterprises that want to build private clouds and take advantage of the technology."
"In terms of services and support, a lot of people have those wrapped around VMware, but we have our own ecosystem developing to support OpenStack."
With Citrix's move behind CloudStack, however, the pressure is clearly increasing on those behind OpenStack.