I think it'll be okay to sticky this here:
DBPTime DavidT - Time commands.
http://www.davidtattersall.me.uk/db.php
BlueGUI RobK - Windows controls.
http://blue.robert-knight.net
DBP Collision DLL Sparky -
http://forum.thegamecreators.com/?m=forum_view&t=31051&b=5
Unity - Lua scripting pack DavidT - Lua 5.0 scripting support.
http://darkbasicpro.thegamecreators.com/?f=lua
Nuclear Glory NG - Collision
http://nuclearglory.com
EZRotate / EZR Enhanced Better rotation commands - WOLF
http://www.ericksonline.com/
Newton Physics Wrapper Physics - Walaber [href]http://walaber.com[/b]
Tokamak Physics Wrapper Physics - WOLF
http://www.ericksonline.com/
Window Skinning GUI - SilentSS
http://forum.thegamecreators.com/?m=forum_view&t=16333&b=5
Cartography Shop .CSM map importer Map loader - APEXnow
http://www.apexnow.co.uk
DBP_NETLIB v1.4.3 Misc commands - CattleRustler & Exeat
http://www.mod2software.com/dbp/dbp.htm
Variable Watcher, Output Console, strings, files, windows dialogs, date & time, and more...
Advanced MessageBox GUI- Exeat [Pic
http://ep.designex.net/Library/Images/AMsgbox.png] [Download
http://ep.designex.net/Files/AMsgBox.zip]
Visual Basic Plugin Wrapper Dev - Exeat [Pic
http://ep.designex.net/Misc/VBinCPP-Screen.png] [Download
http://ep.designex.net/Misc/VBinCPP.zip]
TCA's plugins Various - TCA
http://www.codingarea.co.uk/html/downloads.html
Atoms, CRC32, Getresource, INIFiles, Linked lists, Maths, Memory, Messagebox, MySQL, OS Version, Printing, Serial, Speech, UDGText, URLDownload, Usercontrol
OPEN TO APPEND allows you to easily append to files - The_winch
http://winch.pinkbile.com/append.php
Client Socket (Winsock) Winsock plugin - allows raw network access - cybernetic wraith [href]
http://www.dracsoft.com/zips/client_socket.zip[/href]
DKShop - low level vertex manipulation and many other commands - Dmitry K
http://forum.thegamecreators.com/?m=forum_view&t=39906&b=5
MultiJoy Plugin - Multiple joysticks / joypads in your project plus misc. commands - DarkPhear
http://darkphear.cjb.net
DarkBASIC Network X an ongoing project that will add many commands to DBP - 1tg46
http://forum.thegamecreators.com/?m=forum_view&t=45313&b=8
Deimos List
http://www.whits-end.co.uk/deimos/tpc_list.html
Deimos Archive
http://www.whits-end.co.uk/deimos/tpc_archive.html
Deimos AIML - NEW
http://www.whits-end.co.uk/deimos/tpc_aiml.html
There are lots more, if you have any of your own post them up otherwise I'll get back to work updating the list later.