ACME Script Widgets
   Scripting additions for text and list manipulations. Also helps with cgi scripts.
   http://www.acmetech.com/products/asw/acme-script-widgets.html

Appearance OSAX
   Scripting addition featuring display alert, post notification & more soon - 46k
   http://www.24usoftware.com/AppearanceOSAX

AppleScript Formatting
   Scripting addition to get and set AppleScript formatting styles.
   http://www.merzwaren.com/snippets/index.html

Application Menu
   Scripting addition that automates access to the Application menu
   http://www.geek-central.gen.nz/sw/index.html

FindFile OSAX
   Scripting addition lets users search for files within scripts.
   http://microcosmsoftware.com/findfileosax/index.html

Jon's Commands
   Scripting addition with over 30 commands.
   http://www.seanet.com/~jonpugh/JonsCommandsDocs.html

Prefab Software
   Developer of PreFab Player, an extension that allows AppleScript to control user interface, and Text Machine, an application that gives AppleScript advanced text editing tools.
   http://www.prefab.com

Script DB
   A scripting addition that gives AppleScript built-in database commands, such as insert, delete, sort and find records. Supports FileMaker Pro.
   http://www.applescriptdb.com/

Scripting Additions Database
   Extensive database of information about Scripting Additions (osaxen) for AppleScript.
   http://www.osaxen.com/

SmartWrap
   Scripting addition that wraps text.
   http://www.selznick.com/products/smartwrap/mac.htm

Stuffit Commands
   Scripting addition to stuff and unstuff files.
   http://www.lazerware.com/software.html

Tanaka's osax
   Scripting addition for manipulations of Japanese texts, and cgi scripts.
   http://mtlab.ecn.fpu.ac.jp/tanaka_osax.html

XML Tools
   Scripting addition that parses and generates XML.
   http://www.latenightsw.com/freeware/XMLTools2/index.html