This page contains tools that I am currently test driving. Most are in early alpha / beta testing so use at your own risk. The list below is entirely subjective as it is based on my own personal opinion.
30 Boxes : web calendar
adobe lightroom : digital image management
airportmonitor : airport flight information
ajaxsketch : we-based sketch pad
ajaxwrite : web-based word processor
apollo : cross-OS runtime
appexchange : salesforce.com on-demand applications
blinklist : social bookmarks manager
blue dot : social bookmarking and networking service
boardtracker : search engine for forums
bubbleshare : your photos + your voice = your story
calendarhub : web calendar
copilot : friends and family remote tech support
dabble : search and remix community
dotsub : subtitling tools
farecast : airline tickets assistance
feedharvest : Simple centralized RSS
flightaware : flight tracker
gliffy : create and share diagrams online
grazr : navigate, organise and discover feeds
hanzo:web : social web archiving service
itzle : group surf tool
jajah : web activated telephony
jotspot tracker : spreadsheet wiki
last.fm : personal radio
magnolia : social bookmarking made easy
num sum : shareable social spreadsheets
opml manager : online service to manage opml files
orb : web stream from base computer to any web-connected device
pando : file sharing
picaboo : digital photo services
picture2life : online image editor
pixoh : online image editor
pligg : CMS for social netorking
popurls : news trackers aggregation site
pxn8 : online image editor
rallypoint : web based word / wiki tool
rebtel : local numbers, global friends
reddit : discovery page
rollyo : roll your own search engine
sharpcast : sync media tools
slide : a new way to share photos
songbird : web player
stumbleupon : discover new sites
tagyu : tag generator
thinkfree office online : free suite of office applications online
trulia : real estate search
ubrowser : proof of concept 3D browser
vmware player : virtual machine player
vyew : online collaboration tool
wink : people powered search
wikicalc : web authoring tool
YackPack : voice messaging service
YouOS : Web operating system
zimbra : enterprise messaging and collaberation
zoho : online productivity tools
zooomer : experience the world through photos
zvents : local events search engine