Better Search is a Google Chrome addon which extends the browser with a host of new search-related features and functionality (it supports Google, Bing, Yahoo, Baidu and Yandex).
You're able to preview your search results without opening a new tab, for instance. Hover your mouse cursor over a page description; when it changes to a magnifying glass icon, click to preview, and the document appears in a floating preview window (even PDFs).
The extension helps you find your search term by highlighting it within the preview window. A scroll bar on the right shows you where your keywords are located within the document as a whole, too, making it quick and easy to find each reference.
Tiny icons at the top of your search results pages allow you to run the same search on other engines and sites, including Amazon, eBay, Wikipedia and GitHub.
Better Search allows you to rate pages for their usefulness. "Best" will always appear at the top, "Good" pages are moved higher, "Poor" page hits are hidden for this search, "Block" means hide always hide all pages from that particular site - great for stripping out the junk from your searches.
There's a right-click option to highlight and annotate text in a web page. Revisit the page later and you'll see the highlighting; hovering the mouse cursor over this displays your comments.
Can't remember what you've done? Click the Better Search icon and select My Library to view the pages you've rated and the annotations you've made, an easy way to keep track of your recent research.
The Better Search interface looks a little ugly in places, and it's not immediately clear how everything works, but there's plenty of searching power here and it'll be a great assistant for your next research project.