Almost without thinking we all go straight to Google – which is great. I’ve been using it for years. But there’s a myriad of really great search tools out there. I’ve grabbed all my bookmarks for search engines on Delicious and compiled them into an A to Z of search. It’s not possible to cover every search category so I’ve concentrated mainly on search in the tech and social networking fields. Have a look through this list. It might throw up some surprises – or serious omissions – let me know!
Search aggregators (meta search)
Collecta: search blogs, Twitter, Identica, Flickr etc
searchmerge: search Google and social sites at the same time
keyboardr: search Google, Google Blogs, Google Images, Wikipedia and YouTube at the same time
Sputtr: select whichever search engine you would like to use and it redirects you to that site’s engine automatically
Sperse: search multiple engines
whonu: search multiple engines
Search alerts
ByTagg: get alerts on new search results; free software download
Alertpedia: email alerts
Search Amazon
Amazanian: find Amazon.com products eligible for free shipping
Search anonymously
Search blogs
Search books
Search for books
100 Awesome search engines for bibliophiles
Search – case sensitive
http://case-sensitive-search.appspot.com/
Search colors
Google Image Search Color Filter
Search comments
Search comparison tools
Unified Search (Google, Bing, Wolfram, Wikipedia, Delicious and Stumbleupon; Firefox add-on)
Triplify (Google, Yahoo! and Live Search)
Google-Bing Search (Google and Bing)
Wolfram Alpha Google (Wolfram and Google; Firefox add-on)
Search: computational knowledge
Search conversations
Search for definitions
Search Delicious
Search for direct download links
Search documents (online pdf, doc, presentations, and spreadsheets)
DocMazy (PDFs, DOCs, spreadsheets, PowerPoint presentations and text files)
WhereIsNow (latest versions of documents)
Search for domain names
Search for eBooks
Search faces
Search FAQs
Search for feeds
Search for files
Search flickr
Multicolr Search Lab (search Flickr by colour)
Flickr Related Tag Browser (search Flickr by tags)
Search Forums
Search for free photos
Search Google + twitter
Search Google + Yahoo!
Search health resources
Search: human powered
Search for icons
Search for images
Ginipic (on web and your desktop; download to use)
Compfight (Flickr search)
Search for images – by sketching
Search for images – by colour
Search image galleries
Search – International directory of search engines
Search for keyword trends
Search for keyword suggestions
Search libraries
Search Linux
TuxFinder (search for packages and documentation; search distributions)
Search local area network (LAN)
LAN Search Pro (free download)
Search for lyrics
Search for manuals
Search medical
Search microblogs
Search mp3s
Search multimedia
Searchme (search web pages, videos, images, music tracks, Twitter posts)
Search multiple social sites (simultaneously)
Search music
Search music videos
Search: niche
Accredited Degrees: Here’s a collection of 50 niche search engines
Search for pdfs
DocMazy (PDFs, DOCs, spreadsheets, PowerPoint presentations and text files)
Search people
Search periodically
Alertpedia (email alerts)
Search for personal information
eJustice Blog: Who knows what about you: 25 free tools to find out
Search phrases and acronyms
Search for plagiarism
Search Rapidshare
Rapidshare Search (Firefox add-on)
Search real time
Scoopler (twitter, flickr, digg, delicious, etc)
Search semantic (knowledge-based)
Search for similar images
Search for similar music
mufin (download player)
Search for similar websites
Search social networking
Identify (Firefox add-on)
Search social profiles
Search for songs
Midomi (search by humming song)
Search stock photographs
Search suggestions
Soovle (more search suggestions from your keywords)
Search tag cloud
Adds a tag cloud to Google and Yahoo! search results
Search Cloudlet (firefox extension)
Search for tutorials
Search Twitter
Search for videos
Search visual
Search for website information
Search a website
In your preferred search engine, use the following format:
site:domaintosearch.com your search terms
Search Wikipedia
Search wikis
Search for words
WordWaldo (Scrabble, crossword puzzles, etc)
Search YouTube
If I’ve missed any important categories or missed a search engine you find really useful, please let me know in the comments and I”ll add it to the list. Hope you discover something useful from this post.

Twitter
Flickr

