Ecrion XF Rendering Server - Uses XSL formatting objects to dynamically create customized PDF, POSTSCRIPT, HTML, GIF, JPEG, or PNG files from XML data [Commercial].
IBM WebSphere DataPower SOA Appliances - DGXT is an optimized software-based XSLT interpreter that is cross-platform and fully compliant with the current XSL specification. The XA35 XML Accelerator is a hardware-based solution that speeds XSLT, XPath, XSD (Schema validation) by 30X or more [Commercial].
libxslt - XSLT C library developed for the Gnome project [Open Source, MIT].
MDC-XSL - XSLT processor written in C++ [Open source, GPL].
Microsoft XML Downloads - Contains an XSLT engine, which fully implements the XSLT 1.0 standard [Freeware].
Sablotron - Sablotron is an attempt to develop fast, compact and portable XSLT processor. Supported platforms: Linux, Windows NT and Solaris [Open Source, GPL].
Scriptura - A letter, report, and output generator for XSLT/XSLFO documents. GUI Designer for stylesheets, plus an Engine to create XSLT, XSLFO, PDF, XHTML, and PCL5. [Commercial].
ShoXS: a Shorter XSL Syntax - ShoXS is a Shorter Syntax for XSL and this site provides some tools to read XSL files, convert and edit in ShoXS then convert back and save in XSL [Open Source, GPL].
4Suite XML Tools - Includes an XSLT Processor written in Python by FourThought LLC [Open Source].
Tiger XSLT Mapper - Drag and drop XSLT Editor that doesn't require knowledge of XSLT syntax. Developer edition is free [Commercial].
Xalan-C++ - XSLT Processor written in C++. A part of Apache's XML project [Open Source].
XML::XSL - A server side XSLT processor written in Perl [Open source, GPL].
XML/XSL Portal - Utilities and downloads for XSLT and related developers.
XSet - An XML property set description of XML 1.0 and XML namespaces that enables XPath based indexing and addressing of the full fidelity grove of an XML document.
XSL Processor for ColdFusion - CFX Tag allows you to perform XSL Transformations with ColdFusion. Free developer edition, commercial sites must purchase a license per server.
XSL Template Designer - Includes a Windows GUI that simplifies designing layouts for complex XML forms and a runtime Engine that merges a layout with XML data to produce a PDF via XSL-FO [Commercial].
xsl:easy - Transformation tool using built-in graphical XSLT editor to create XML out of arbitrary data and save the transformation result back to other formats [Commercial].
XSLScript - Terse notation for writing complex XSLT stylesheets