FlickrFight
FlickrFight is a new Website which helps you to compare the Images. You select the keywords or tags to be contested. The one with the most images on site, wins the fight.

Retrievr
Retrievr is an experimental service which lets you search and explore in a selection of Flickr images by drawing a rough sketch.

Multicolr Search Lab
With the Multicolr Search Lab, you can browse through 10 million of Flickr’s most interesting Creative Commons images, and find ones that share the same colours. Choose up to 10 colours from our palette of 120 different shades.

Flickr Color Selectr
Flickr Color Selectr allows you to search for images on Flickr based on the primary color within the image.

Tilt Viewer
A free, customizable 3D Flash image viewing application.

FlickrVision
Flickrvision is a webapp that displays the newest uploads to Flickr. As the globe spins, photos pop up from every continent, featuring landscapes, architecture, people, animals, food, and anything imaginable.

Flickr Logo Makr
Flickr Logo Makr allows you to create a flickr style logo.

depictr
Type in some lyrics and retrieve related photos from Flickr.

Flicktionary
Test your guessing skills and flickr picture choosing skills in this fun twist on pictionary.

fastr
A flickr game to guess the tag of a photo.

Flickr Sudoku
A sudoku puzzle game using Flickr Photos.

Tagman Flickr
TagMan is a game that combines the classic hangman game with tags. Tags are used to label the subject or category of blog posts, photos and other items on the web.

Memry
Play a memory game with photos from Flickr.To start playing just type a tag and click ‘play’.

Mosaickr
With mosaickr you can create beautiful mosaics from your flickr pictures, and even print them on posters!
Creating a mosaick is easy and it’s free.

Fleace
Fleace, the Flickr-Enabled Automatic Changer for Everyone, is a free wallpaper changer that retrieves pictures from Flickr based on topics of your choice.

Wallpapr
A simple Ajax web app that spits out a selection of photo wallpapers from Flickr’s Wallpapers pool on demand. Type to search for wallpapers using keywords of your interest, you will receive the results as thumbnails.

Color Hunter
Color Hunter is a place to find and make color palettes created from images. When you search for color palettes by tag, ColorHunter.com searches Flickr.com via Flickr’s API for images labeled with the tag you entered. The thumbnails of the Flickr images are used to create a color palette.

Flickr Finder
Flickr Finder is a Mac application for browsing Flickr photos without a browser. The interface is similar to the Mac Finder.

Earth Album
Earth Album is a simple Flickr mash-up that allows you to explore some of the most stunning photos in the world courtesy of Google maps and Flickr.

Preloadr
Preloadr offers free photo editing for Flickr. Simply log in to Flickr and authorize Preloadr to access your photostream you can then choose images to crop, flip or rotate.