Thanks to everyone for joining in on this discussion, which went slightly beyond my original intentions (a good thing), but learnt a few new things along the way. Was a bit surprised that throughout this thread, the market seems divided between LAMP and Java only. What happened to ASP, C#.NET or even desktop/tools? And what about browser's client-side XSLT 2.0?

If I try to compile a little final list of all information so far, it'll look something like the following. If you have information about the gaps in my information gathering, I'm (still/always) all ears.

Complete implementations

------------------------ - Saxon-HE, open source, basic [1][3] - Saxon-PE, commercial closed source, basic [2][3] - Saxon-EE, commercial closed source, schema-aware [2][3] - AltovaXML, free closed source, schema-aware[4] - IBM WebSphere Feature Pack, free* closed source, schema aware[5]

* the feature pack is free, WebSphere, to which it belongs, is not

Incomplete implementations

-------------------------- - Intel XSLT 2.0, public beta free dl, basic*, 90% conformance [6] - Gestalt, open source, no more development, unknown conformance [7] - Oracle 10.1+, unclear status, no dl, unknown conformance [8]

* Intel wants feedback, in particular about whether to implement SA.

Alternatives

------------ - EXSLT, extensions to XSLT 1.0 to close the gap, no conformance [9] - XSLT 2.0 through XSLT 1.0 (can't find the link anymore)

No plans

-------- - Microsoft has postponed plans for XSLT 2.0 indefinitely [10]

Wishes

------ - Native XSLT 2.0 for .NET. The XPath 2.0 datamodel is already there - Native C/C++ XSLT 2.0 processor for LAMP and others - Open source C-interface for implementation in open source browsers

References

---------- [1] http://saxon.sourceforge.net [2] http://saxonica.com [3] http://www.saxonica.com/feature-matrix.html [4] http://www.altova.com/altovaxml.html [5] http://www-01.ibm.com/software/webservers/appserv/was/featurepacks/xml/ [6] http://software.intel.com/en-us/articles/intel-soa-expressway-xslt-20-processor/ [7] http://sourceforge.net/projects/gestalt/ [8] http://blogs.oracle.com/rammenon/2007/05/xslt_20.html [9] http://www.exslt.org/ [10] http://stackoverflow.com/questions/1525299/xpath-and-xslt-2-0-for-net

Vyacheslav Sedov wrote: