It's easy - just select the desired access level, copy this link and send it via email, instant message, etc.Link: Just a link to your wiki. Post this anywhere and people can ask you for the invite key.
techsoup.org: TechSoup Stock connects nonprofits and public libraries with donated and discounted technology products. Choose from over 240 products from companies such as Microsoft, Adobe, and Symantec. Visit TechSoup Stock.
snagit.com: free trials for a screen capture program
Graphic Viewers
irfanview.com: IrfanView is a very fast, small, compact and innovative FREEWARE (for non-commercial use) graphic viewer for Windows 9x/ME/NT/2000/XP/2003/Vista.
Plugins
libx.org: LibX is a browser plugin for Firefox and Internet Explorer that provides direct access to your library's resources. LibX is an open source framework from which editions for specific libraries can be built.
feed2JS.org: An RSS Feed is a dynamically generated summary (in XML format) of information or news published on other web sites- so when the published RSS changes, your web site will be automatically changed too.