JavaScript Joystick Plug-in
A free browser plug-in to enable JavaScript, Java, Flash and Director to access joysticks and gamepads.
http://www.bigredswitch.co.uk/toolbox/joystick/

Thelotron Technologies
DirectX audio plug-ins for host based audio processing. Developer of the BeatModel T1 Plug-in Pack.
http://www.thelotron.com/

Lok and Load Plug-Ins Manager
Works with Pro Tools to speed loading and apply plug-in configurations. By About Right Ltd.
http://lok.seeker.co.nz

Productive Computing
Productive Computing, Inc., the premier Filemaker Pro Database consultants, which provide custom Filemaker Pro Database solutions and plug ins and ecommerce integration can build a customized Filemaker Pro Database for any small to medium size business.
http://www.productivecomputing.com/

Stephen Vincent's Plug-ins
Offers various plug-ins with a theme of creating complex paths in Adobe Illustrator.
http://members.shaw.ca/spvincent/plugins/

4D Plug-ins on Info-Mac
Plug-ins include Color 4D and File Toolkit for 4D.
http://hyperarchive.lcs.mit.edu/HyperArchive/Abstracts/dev/db/a4d/HyperArchive.html

RB-MPW Plug-ins Kit
A kit for building REALbasic plug-ins with MPW
http://www.pmpfr.co.uk/RBonMPW.html

IB LogManager
A data logging utility that is integrated into the database. Available as a stand-alone application, EMS QuickDesk plug-in, or IB Expert plug-in.
http://www.iblogmanager.com

Sibelius Resources
Sibelius 5 music notation resources, scorch, music software, notation software, fonts, support, ManuScript plug-ins, books etc
http://www.musicprep.com/sibelius/

JC_ActiveDoc Plug-In
JC_ActiveDoc(TM) Plug-in allows you to view Microsoft Word, Excel, PowerPoint right inside Netscape
http://www.jcsoft.com/docobject/