Single Page Application

A '''SPA''' is a web application that fits on a single page, and which might be optionally enhanced by connectivity with a server.

Some recent examples of SPA include the "Wiki On A Stick" or "Wiki On A Flash Drive" apps:

TiddlyWiki
GTDTiddlyWiki, an adaptation of an older version of TiddlyWiki
HailiWiki

The key property of these Wiki On A Stick web applications is that you can do a "File->Save Page" in your browser and get your own personal wiki. All the wiki pages and data then lives on your own local storage and is private to you.

TiwyWiki (take it with you wiki)

Although these personal wiki's are interesting and have a chance at replacing your todo.txt file, I think they are only a hint at the applications that are possible in the SPA paradigm.

TrimJunction aims for this future by adding Model-View-Controller and SQL programming concepts to the SPA party, with all the amenities that we've come to expect from open-source and view-source hospitality.

Known SPA Applications

Next Action
TiddlyWiki
GTDTiddlyWiki
HailiWiki
hRouter for Reblg
Time-Tracker - A Time Management Application
NetVibes - Ajax'ed start page
Protopage - Ajax'ed start page
Solitaire Mahjongg, a web game application coded in dynamic HTML
meebo, Browser-IM (AIM/ICQ, Yahoo!, MSN, Jabber/Google Talk)
Mutant Bible : mutant text that change as you read (spanish lang)
Multiplexer : javascript web spider that collect Avatar images from forum boards
RXE3 : tei version of the Realtime Xul Editor
Monkey Match, a single page memory game using greasemonkey and Amazon web services.
http://angel.net/~nic/passwd.html, a SPA for generating strong passwords for web signon's by generating a MD5 hash of the website domain with a master password. This is compatible with the greasemonkey password composer script.
Know of any others? Please add them here.

Toolkits for SPA Applications

Rialto Rich Internet Application Toolkit (demo)