Family Nuy Developments for PostNuke
- Developer of several modules for use in PostNuke such as pnMoodle and a feedback module. Website also provides access to downloads for various PostNuke modules in one location [Open Source, GPL].
- http://www.nuy.info/downloads/index.php?dir=Developments%20by%20CMS/Postnuke/

PNphpBB Hacks
- Developers of various hacks that extend and tweak the functionality of PostNuke Bulletin Board. Additionally, the site includes themes for PostNuke and/or PNphpBB and an exhaustive smiley pack (emoticons) [Open Source, GPL].
- http://sourceforge.net/projects/pnphpbbhacks/

pnStandings Series
- pnStandings is a module system for managing tournaments, schedules, rankings, teams, players, personal statistics. Currently has modules for Volleyball, Basketball and Soccer [Registration required for download, Free versions and Commercial versions]
- http://www.pnstandings.com/

Rose and Curt
- Download site for the PostNuke Recipe and MultiImage Modules and a modified who's online site block [Open Source, GPL].
- http://www.curttimmerman.net/pn/

Kemas Yunus Antonius
- Developer of several PostNuke Modules including a public domain Dictionary, Internet Radio, Internet TV and Quran with English and Arabic translations [Open Source, GPL].
- http://www.kyantonius.com/

Jorn Lind-Nielsen
- Developer of two modules one that allows an administrator to creat their own types of publications (PageSetter) and another for an image gallery (Photoshare). Both are well documented and supported [Open Source, GPL].
- http://www.elfisk.dk/

Magnish Series
- Developer of the Magnish Image Gallery with full block support and unlimited galleries [Free and Pro versions], and the Magnish Realty module for real estate management in PostNuke.
- http://www.imwebdesigning.com/

Rafaellop
- Developer of several modules including a buddy list (CS Buddies), an award module (CS Awards), a site hints module (CS Site Hints) and finally a modified version of the Download and Web_Links modules for language support [Open Source, GPL].
- http://rafaellop.republika.pl/

Hotscripts
- A listing of the most common postnuke modules that are available. Most of them modules are free for download use under the GNU Public License.
- http://www.hotscripts.com/PHP/Scripts_and_Programs/Miscellaneous/PostNuke_Modules/

PostNuke Modules CVS
- A central CVS repository for Postnuke modules. most modules seem to be last updated in 2001 [Open Source, GPL].
- http://sourceforge.net/projects/pn-modules

Orodruin
- Developer of PostNuke's Encyclopedia module in addition to a fanfiction and efiction module [Open Source, GPL].
- http://sourceforge.net/projects/orodruin/

pnADD-ONS
- Developer of several add-ons and hacks for PostNuke, including blocks, modules, themes. [Requires registration for download].
- http://www.pnaddons.com/

News Modules
- Developer of several modules including one for integration of a newsletter service (What's_News), a module to get information from remote sites and import into current site (SyncAcross) and a remote news fetching module (ShortNews) [Open Source, GPL].
- http://sourceforge.net/projects/pn-whatsnews/

Lottasophie
- Developer Site of My_eGallery and EZComments module in addition to a few other PostNuke utilities. Site documentation includes API information and docs for all of the site modules [Open Source, GPL].
- http://lottasophie.sourceforge.net/

Vivian Synteta
- Developed a project-based e-learning module for higher education (ePBL), a join project module (joinproject) and a virtual quiz module (vquiz) and provides some documentation for writing a PostNuke modules [Open Source, GPL].
- http://tecfa.unige.ch/perso/vivian/

pnConcept
- Developers of several points-based modules including a module that allows users to gain points for being active on the site through posts and articles (pncUserPoints), site members can apply to a different group (pncGroups) and a statistics module for mem
- http://dev.pnconcept.com/

Ivory Tower
- Developed several PostNuke modules including a real estate module (OpenRealty), poetry system for registed users (Poetry) and a word definition module (Semantics) with associated Word of the Day site block [Open Source, GPL].
- http://www.ivory-tower.net/

Bronto
- Perserves modules including a hacked version of the Downloads module for corporate use, a weather module, and an edit of the phpwebsite calendaring system for PostNuke [Open Source, GPL].
- http://bronto.csd-bes.net/