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In addition to the scientific research this site can point you to, check out their Productivity tools for producing symbols, PDFs, images from web pages, OCR, on-screen keyboards, non-western characters and more!

"Bulb is a simple tool that allows you to share your knowledge using video, images and text, published on pages and organized into collections. It's a place where anyone can teach, everyone learns, and knowledge changes lives."

via @rmbyrne

"This tool makes it easy to reuse [and attribute] images from Wikipedia and the free media archive"

DeweyDigger.com is a visual search portal where you can "Explore knowledge via the Dewey Decimal Classification; just clickety-click."  On the splash page you are presented with the main Dewey Numbers and an ever-changing interactive panorama showing images from these listings.  Next you need to click on an image to access a cloud tag of terms in that call number.  From there you can select a tag and then select a search or research tool to locate information.

"Cropper is a screen capture utility written in C#. It makes it fast and easy to grab parts of your screen. Use it to easily crop out sections of vector graphic files such as Fireworks without having to flatten the files or open in a new editor. Use it to easily capture parts of a web site, including text and images. It's also great for writing documentation that needs images of your application or web site. "

This neat tool from Google, ChartTool is a simple-to-use chart-making service that lets you simply paste in your data and play around with how it looks. It's never been easier to whip up charts that are actually easy to use and update. In fact, embedding these charts on web pages is quite simple thanks to the embed API. You can even make QR codes in just a few seconds and quickly get an embed code to add it to your website. While ChartTool does not create as many of those fancy 3-D charts that Excel does (it still makes quite a few), it likely will be able to in the future. However, if you're in a rush and need to whip up some exact charts without all the fluff, this is the tool for you.

The X-Ray Goggles make it easy to see and mess around with the building blocks that make up the web. Activate the Goggles to inspect the code behind any web page, from the New York Times to your own blog. Then remix elements with a single click, swapping in your own text, images and more.  Recommended by Doug Belshaw

An easy-to-use, free tool. Go to the main page and sign in using your Facebook or Twitter account. Once logged in you can click on record and start talking . You have up to 30 seconds of recording length so you may need to prepare a script. When your audio message is ready Qwips generates a URL for you so that you can use to share your messages. You can embed it on your blog or share it with others via email. You can also use your audio message as an image caption.

Kuler from Adobe - interactive tool for creating colour themes. Upload an image and let Kuler pull out which colours work together.

Convert an image and process to a text file of the original image. Convert picture to text.

via @e_gran

"kwout" is a way you quote a part of a web page as an image with an image map.

NewOCR.com is a free online OCR (Optical Character Recognition) service. NewOCR.com can analyze the text in any image file that you upload, and then convert the text from the image into text that you can easily edit on your computer.