RealPix: The SMIL Graphics Format  
   Graphics format developed by Real Networks. It allows graphics to be streamed over web as part of Synchronized Multimedia Integration Language (SMIL).
   http://wdvl.com/Authoring/Languages/XML/SMIL/RealPix/

GRiNS  
   Authoring software available for Windows, Macintosh and Unix platforms. Software includes a player for SMIL.
   http://www.oratrix.com/GRiNS/

X-Smiles.org  
   XML browser that features an implementation of SMIL 2.0 basic profile.
   http://www.x-smiles.org/

SMILGen  
   Authoring tool for SMIL 2.0, providing an XML editing environment that manages the proper placement of elements and attributes. SMILGen is written in Python, and is an open source project licensed under the BSD license.
   http://www.smilgen.org

JustSMIL  
   Lots of resources and information on SMIL.
   http://smw.internet.com/smil/smilhome.html

HELIO  
   SOJA, the Java-based player and a tutorial on creating synchronized multimedia.
   http://helio.org/products/smil/

NIST S2M2 Project  
   A Java-based player prototype.
   http://smil.nist.gov/player/

Synchronized Multimedia Integration Language (SMIL 1.0)  
   The W3C's official technical description of the language, including the document type definition and elements within the language.
   http://www.w3.org/TR/REC-smil/

WDVL: Introduction to SMIL  
   Beginners information and a brief tutorial on using RealPlayer to create presentations.
   http://wdvl.com/Authoring/Languages/XML/SMIL/Intro/

XHTML+SMIL Profile  
   Integrates a subset of the SMIL 2.0 specification with XHTML. Includes SMIL 2.0 modules providing support for animation, content control, media objects, timing and synchronization, and transition effects. (W3C Note 31 January 2002)
   http://www.w3.org/TR/XHTMLplusSMIL/

SMIL plugin for HTML-Kit editor  
   Edit SMIL documents in HTML-Kit using the HKSMIL plugin. Which adds the ability to lookup online help.
   http://www.chami.com/html-kit/plugins/

Learn SMIL with a SMIL Presentation  
   Examples and tutorials with links to the official site and a player.
   http://geocities.com/ramirez_j2001/index.html

PerlySMIL  
   Perl module is used to create dynamic SMIL. Download the module and sample scripts.
   http://www.webiphany.com/perlysmil/

The SMIL Tutorial  
   A tutorial covering the basics of SMIL.
   http://www.helio.org/products/smil/tutorial/chapter1/index.html

Schmunzel  
   A SMIL 1.0 compliant Java applet or JMF player developed by SunTREC Salzburg. Demonstrations and documentation.
   http://www.salzburgresearch.at/suntrec/schmunzel/

Confluent Technologies  
   A streaming multimedia creation tool that uses SMIL.
   http://www.fluition.com/

SMIL 1.0 Synchronized Multimedia Tutorial  
   Tutorial article from Web Techniques that gives an overview of SMIL 1.0. Example for download (requires RealPlayer), and full text of the article.
   http://www.emediacommunications.biz/wt1/

A walk in the Forest  
   SMIL tutorial.
   http://geocities.com/seang64/