Our company (www.alfstore.com) is about to release a new Portlet for the Alfresco Document Management software (next week).
Our new component will especially be tested and supported with IBM WebSphere Portal (and of course Liferay), and will be JSR286 compliant.
The v1.0 open source version will be delivered next week in the Alfresco forge, and the supported (commercial) release is scheduled end of October.
I will describe our Portlet for IBM WPS soon in a next blog post, but before that I would like to present the “Share Portlet” recently published by the Alfresco team: Alfresco Share Portlets for Liferay and JSR-168 Portal
The “Share DocLib Portlet” is already well documented by Alfresco (see all links at the bottom of this article), so I will only give you the main principles:
Functionnaly the purpose of this “DocLib Portlet” is to expose the Share interface into a Portal.
As per the webinar presentation, it seems that almost all the rich document repository browser capabilities of Share have been “portal enabled” so far.
So the Share Portlet is a good choice if you want to fully expose the Share features and look & feel into a portal page (full window view).
Please note that some Share features are not “portal enabled” for the moment, like blog, wiki, etc. Also, as far as I know there is no search feature exposed.
Technically the Alfresco Share Document Library (and surf webscripts) have been “portletized” and can be deployed as a Portlet (.war file) into the Portal runtime.
The Share Portlet is not based on CMIS, but uses the existing Share webscript, because with CMIS it is still not possible to manage advanced feature like versionning, preview, etc (which are exposed in Share UI and in the Share Portlet).
The “DocLib” Portlet will be available for the following Alfresco version:
– Alfresco server components installable against Alfresco Enterprise 3.3.1 (already available).
– Alfresco Community 3.4.x (I think it will be included only in 3.4.c ?).
Initial Supported Stack:
– It will be supported by Alfresco only for Liferay Portal CE & EE 5.2.3 (Others TBD),
– As per the webinar it is not tested on other Portal (like IBM WebSphere), but it seems to mostly works on Weblogic.
SSO:
The current version use use the standard Liferay ability to pass the portal UserID to Alfresco, and a special authenticator on Alfresco side accepts the credential passed by Liferay.
The webinar demo of the DocLib Portlet was really impressive, and the Alfresco team has done a great work ! Hope you will like it (more info below in the Useful links section).
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Useful links:
Alfresco Share Portlets for Liferay and JSR-168 Portal
http://www.alfresco.com/products/integrations/liferay/
Read wiki documentation
http://wiki.alfresco.com/wiki/Portlets
Watch video, Portlet Installation and Configuration
http://www.youtube.com/watch?v=ypw7oCjUPKo&rel=0&hd=1
Webinar recording:
http://www2.alfresco.com/l/1234/2010-09-21/O1ZM3
New Portlet Development Options for Alfresco!
http://blogs.alfresco.com/wp/luissala/2010/02/24/new-portlet-development-options-for-alfresco/
Posted by Enguerrand SPINDLER 
Alfresco & Share Blog 