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*CIE Color Calculator: Converts among most of the CIE color models as well as providing correlated color temperature and standard RGB conversions. *Companding Calculator: Converts among luminance, CIE L*, density and gamma. Includes both a numeric calculator and a graphical display. *Color Difference Calculator: Computes color differences using several different methods (CIE1976, CIE1994, CIE2000, CMC). *Chromatic Adaptation Calculator: Converts colors between reference whites using different chromatic adaptation algorithms. *CIE Spectral Display: Calculates and displays many useful CIE functions, such as the Standard Observers, the Standard Illuminants and blackbody radiators. *Spectral Calculator Spreadsheets: Calculates colorimetry, densitometry and RGB values from your spectral data. *Levels Calculator: See how you lose levels when you pass data through curves. *ColorChecker Calculator: Performs many spectral calculations on the 24 colors of the ColorChecker chart. *ColorChecker RGB Summaries, Spreadsheets and Lab TIFF File: You will find three things on this page, a) summaries of the ColorChecker colors, expressed in each of many standard RGB color spaces, b) spreadsheets that allow you to find which RGB color space is closest to your RGB values, and c) a computer generated Lab TIFF file of the ColorChecker. *Munsell Display Calculator: Displays the Munsell color set (2734 colors) in xyY, Lab and Luv. This is a useful tool for evaluating uniform perceptual color spaces. Also included is an explanation of the infamous "blue turns purple" problem often seen with printer profiles. *Dot Gain Calculator: Performs the standard Murray-Davies dot gain equation to your density measurements. *Dot Gain from Lab or Profile: Two spreadsheets which calculate dot gain from Lab measurements, also allowing you to measure the dot gain of a CMYK ICC printer profile.

follow cost measures how much people tweet. We use an absolute scale (average number of tweets per day) but also measure tweets in milliscobles, or 1/1000th of Robert Scoble's Twitter output. One milliscoble is defined as 1/1000th of the average daily Twitter status updates by Robert Scoble as of 10:09 CST September 25, 2008. At that time, Scoble had tweeted 14,319 times in 675 days, for an average tweets per day of 21.21. Thus, one milliscoble is defined as 0.02121 tweets per day.

The Klout Score is the measurement of your overall online influence. The scores range from 1 to 100 with higher scores representing a wider and stronger sphere of influence. Klout uses over 35 variables on Facebook and Twitter to measure True Reach, Amplification Probability, and Network Score.

Pulse of the Planet visualize tweets in real-time using Google Maps. Sensation and Perception Experiments Two experiments which I designed and ran for my Sensation and Perception class in Fall 2009. They are designed to measure counting thresholds. Both experiments use HTML5 canvases which requires a modern browser such as Google Chrome or Mozilla Firefox. Life on a Canvas simulation of Conway's Game of Life and I added a bunch of features to make it interactive. Go ahead and enjoy it! Tier3 Tier3 attempts to build itself as a layer on top of social news sites like Digg and reddit.  Pong written in JavaScript Radius Radius is a portal-esque web page. Shiny graphics, Ajax, and APIs are at the heart of this prototype. It may not be practical, but it is an experiment in making a portal type page. 

UPcload Is Your Passport Get measured once with UPcload, then shop everywhere. Your private UPcload profile is your passport to finding great-fitting clothes online.

Very good hearing test - advice: Take a screemshot of your results, date the file, so you can compare with future tests. Warning ! Do not start with a panel in the top third of the chart: you might hurt or even damage your ears. This hearing test measures the relative sensitivity of your ears at different frequencies. It produces equal loudness contours or hearing curves - the frequency response of your own ears. 

Geekbench measures your computer's processor and memory performance. Use the Geekbench Browser to organize and share your Geekbench results with other Geekbench users around the world.

"TipRanks is a browser application that allows you to instantly see the track record and measured performance of any analyst you come across, so you know who to trust!"

OM2 Core DOM2 Events DOM2 HTML DOM2 Range DOM2 Style (getComputedStyle, …) DOM2 Traversal (NodeIterator, TreeWalker) DOM2 Views (defaultView) ECMAScript HTML4 (, , …) HTTP (Content-Type, 404, …) Media Queries Selectors (:lang, :nth-child(), combinators, dynamic changes, …) XHTML 1.0 CSS2 (@font-face) CSS2.1 ('inline-block', 'pre-wrap', parsing…) CSS3 Color (rgba(), hsla(), …) CSS3 UI ('cursor') data: URIs SVG (SVG Animation, SVG Fonts, …) When taking the test, you should use the default settings of the browser you are testing. Changing the zoom level, minimum font size, applying a fit-to-width algorithm, or making other changes may alter the rendition of the test page without this constituting a failure in compliance. The Acid3 test measures some performance characteristics. The test does not attempt to make any comparisons or judgments as to the performance of any hardware used, and should not be used as a hardware benchmark. If the test is run on a slow computer or device, it may run slowly or not smoothly and this does not imply non-conformance.

The page analyzer analyzes your web page performance by emulating how a web browser would load your page and all resources referenced in it. The page and its referenced resources are loaded and important performance metrics are measured and displayed in a load-bar diagram along with other per-resource attributes such as URL, size, compression ratio and HTTP status code. Each bar has parts of different color corresponding to a performance metric:

This SEO Analysis Tool is to help you analyze and measure the ranking potential of your web pages. It doesn't only analyze the Meta Tags of your pages, rather it tries to use the same spider technology as the search engines spiders them self.

WebDigr provides free information to webmasters about their websites and competitors'. It collects website information and statistics, analyze them and translates into several simple and measurable metrics. WebDigr uses more than 10 different sources for its website data input. The numbers you see on WebDigr are estimate results and based on both widely accepted calculation methods and WebDigr own unique calculation methodology."

Google Earth Engine brings together the world's satellite imagery-trillions of scientific measurements dating back more than 25 years-and makes it available online with tools for scientists, independent researchers, and nations to mine this massive warehouse of data to detect changes, map trends and quantify differences on the earth's surface

Design is a suite of web-design and development assistive tools which can be utilised on any web-page. Encompassing utilities for grid layout, measurement and alignment, Design is a uniquely powerful JavaScript bookmarklet.

The Klout Score is the measurement of your overall online influence. "Klout is turning Twitter into a game. As you tweet and connect with other Twitter users, you earn badges for notable achievements. For example, when you're mentioned by 100 unique users, or have a message retweeted by 25 people, your Klout profile gets a pretty new graphic. "

Klout identifies influencers on topics across the social web

SpiderOak offers a different approach to online backup by combining a suite of services into one consolidated tool - free online backup, synchronization, sharing, remote access, and storage. This difference is further measured in our zero-knowledge privacy policy - the first one ever employed in this setting. Our flexible design allows you to handle data from any operating system (Mac, Windows and Linux) or location (external drives, network volumes, USB keys, etc...) using just one centralized account.

"SpiderOak makes it possible for you to privately store, sync, share & access your data from everywhere."

service that can aggregate many of the existing measurements of your blog's reach and interactivity into a single (abstract and isolated) number.

Realtime trends

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