del.icio.us is a social bookmarks manager. It allows you to easily post sites you like to your personal collection of links, to categorize those sites with keywords, and to share your collection not only between your own browsers and machines, but also with others. RSS feeds, tags and bookmarklets make bookmarking your links a treat !! You can also view the currently most popular bookmarks. Get started quickly by this Beginner’s Guide, or benefit by reading about the Habits of Successful del.icio.us users.

There are several quick alternative ways of posting at post.icio.us. Decoding del.icio.us makes interesting reading incase you are curious about this peculiar domain name del.icio.us. You can fix up your own tools with the del.icio.us API. A post at The Farm does a good detailing of the del.icio.us API. BTW the owner Joshua Schachter now runs the Del.icio.us Blog to keep you updated.

In a recent update - Bookmarked items in del.icio.us that end in one of a number of filetypes will now automatically get some system tags added. You can use these just like normal tags. So if you are looking for mp3 files - See the system:filetype:mp3 tag

• Delicious Mona - Add any article to ‘My Del.icio.us’ bookmarks with a single mobile click.
• Delicer - del.icio.us client tool to manage your tags and posts effectively and quickly navigate through your bookmarks.
• Ridiculous - a simple wrapper for del.icio.us API writing in Ruby.
• Del.icio.us Url - Enter a url to see its history on del.icio.us.
• DeliciousTray - application sits in the Windows system tray and gives quick access to all links and tags posted to your Del.icio.us.
• Mischievous - Browser plugin for Internet Explorer that uses del.icio.us to manage your queue of drag and drop links.
• Epilicious - is an extension for the Gnome web browser Epiphany that lets you synchronise your local bookmarks with the bookmarks in a Delicious account.
• Find Similar Sites - a mashup of del.icio.us and easyutil.com to find relevant web sites based on people’s tags/bookmarks on del.icio.us.
• Mobilicio.us - Access your del.icio.us bookmarks from your mobile device
• SlashLinks - automatically mirrors del.icio.us links and their design and layout can now be fully customized.
• Pukka - minimalist posting client to easily post to one or more del.icio.us accounts.
• Another Delicious Sidebar - A firefox extension sidebar for accessing del.icio.us bookmarks, also edit and delete links.
• Autoblogger - reads recent del.icio.us bookmarks marked with a specified tag and creates a link to them with the page title, as well as quote a random (filtered, given simple heuristics) excerpt of the text.
• DiggLicious - a cool blend of digg.com and del.icio.us.
• Wordpress Delicious Plugins - Collection of Wordpress plugins that add del.icio.us functionality.
• DoubleUp - Let your visitors browse your del.icio.us bookmarks in a neat way.
• Thumblicio.us - displays screenshots of sites by tags or most popular sites from del.icio.us.
• New Search Tools for Del.icio.us - offers multiple ways to search tags and bookmarks of yours and other users.
• post.icio.us - new tools for quicker posts in del.icio.us. Offers several quick ways to add, delete posts and rename tags. Also useful is the experimental pop up bookmarklet.
• Expialidocio.us - uses the OpenLaszlo platform and the del.icio.us API to display posting histograms and time-specific tag clouds.
• mog.rif.icio.us - is WordPress plugin that displays del.icio.us bookmarks for one user in the sidebar. Organizes by tag, in a dynamic menu and checks once a day for new bookmarks.
• deli.ckoma - provides statistical data gained from del.icio.us like posts per day, number of tags per post etc.
• Del.icio.us Opera Buttons - Opera allows the users to create custom buttons. Enter your del.icio.us username and then you can click on the buttons or drag them into your main bar.
• Delimages - a view of images from del.icio.us.
• From Del.icio.us to WordPress - How to automatically post daily links.
• Safarilicious - exports safari bookmarks to del.icio.us automatically.
• Delancey - presents an alternate view of del.icio.us bookmarks by keeping track of which ones are used most frequently.
• Bookmark this! WordPress Plugin - adds a “Bookmark this page on del.icio.us” link to your posts or sidebar.
• Official Del.icio.us Firefox Extension - Integrates del.icio.us into Firefox.
• Play Tagger - easily play mp3 files directly on your website or blog by simply including a tiny javascript.
• Diggdot.us - Combines posted links of Digg, slashdot, and del.icio.us/popular.
• Geotagg del.icio.us bookmarks - tag and view bookmarks in Google Earth and do a virtual tour.
• Internet Explorer Active Channel - An easy way to keep your bookmarks in sync with Internet Explorer.
• Firefox Search Plugin - Integrate del.icio.us search directly into Firefox.
• Tagrolls - display your del.icio.us tags as part of your website.
• Greasemonkey Del.icio.us Director - every time you visit your own del.icio.us page, the Director should auto-load.
• Private del.icio.us bookmarklet - URLs saved with this bookmarklet will not appear publicly that you have bookmarked them. Based on Semi-private bookmarking in del.icio.us
• ar.icio.us - is a PHP script that allow different sorting methods for your del.icio.us RSS feeds.
• browse.delicious - is visual browser that let users explore and browse through a sample data-set of del.icio.us
• del.icio.us surf - lets you ‘channelsurf’ del.icio.us tags/users. A random page from the popular page for that tag is loaded into the frame and a link to post the page to del.icio.us is given.
• del.icio.us pioneers - Who keeps posting the most popular links?
• Use del.icio.us for categories in blogger - 3 ways from lo-tech & least integrated to hi-tech & most integrated
• TXP.icio.us - lets you easily integrate your Del.icio.us tags into your website.
• del.icio.us one click delete - firefox extension that allows deletion of del.icio.us bookmarks with one click.
• VeryDelicious - is a toolbar that allows the user to quickly add and find del.icio.us bookmarks.
• del.icio.us post - firefox extension that posts current page or link to del.icio.us
• LiveMarks - real time live preview of latest and popular del.icio.us bookmarks
• delic123 - is a Firefox toolbar extension that facilitates posting and personal/global searching for del.icio.us
• Familiar Taste - is a Greasemonkey extension for the Firefox web browser that consults your set of del.icio.us bookmarks to see if you have the current page marked.
• Delicious Soup - A tool that reveals your del.icio.us activities.
• Revealicious - is a set of graphic visualisations for your del.icio.us account that allow you to browse, search and select tags, as well as viewing posts matching them.
• Lazy Sheep Bookmarklet - auto-tags and auto-describes your bookmarks.
• DeliciousSubmit - Batch submit URLs to del.icio.us
• Tortuga Delicious ActiveX Component - it automates the submission of URLs to del.icio.us
• Delicioso - a free “power” submit program for del.icio.us.
• Json Feeds - load a javascript object that contains your latest bookmarks, by including this script.
• Vox Delicii - view a “heat mapped” visualization of the current week’s popular content on Del.icio.us.
• Linkrolls - display your latest del.icio.us bookmarks on your website.
• Del.icio.us Toobar - for firefox users.
• Del.icio.us filtered - Seeing a link once should be enough.
• Del.icio.us Tag Clouds - cluster your del.icio.us bookmarks into tag clouds.
• CollaborativeRank Search - tagging habits will have greater influence on this search engine’s rankings.
• Startplane - a directory based on the popular del.icio.us bookmarking.
• del.icio.us direc.tor - is a prototype for an alternative web-based rich UI for del.icio.us. Delivers a responsive interface for managing user accounts with a large number of records.
• Gataga - search for bookmarks in popular social bookmarking services like Del.icio.us, Furl etc.
• konqil.icio.us - Konqueror service menu for del.icio.us
• One-Click Delete - extensions adds a ‘delete’ link to del.icio.us pages. Similar bookmarklets at post.icio.us
• Cloudalicious - graph any del.icio.us URL Tag Cloud’s progression over time.
• Grafolicious - A webmaster tool to see the evolution of a del.icio.us bookmark graphically.
• Backing up Del.icio.us to Gmail - Simple tutorial based on a script from Bill Mill.
• del.icio.us backup - This ruby script dumps all your del.icio.us bookmarks into a sqlite database.
• Styling del.icio.us - user skin for Firefox (Greasemonkey) and Safari.
• Delicious.NET - This version includes a core dll that is a wrapper around del.icio.us RSS feeds, and most of the del.icio.us user api.
• Outfoxed - add del.icio.us users (or any other RSS 1.0 sources) to your list of informers.
• Bookmark this - code to add a “Bookmark This” link on every post, next to the Comments link.
• Technorati and del.icio.us Tags for Blogger - GreaseMonkey script to make it easier to add Technorati Tags to your blog post when editing with Blogger.
• del.icio.us Internet Explorer Context Menu - lets del.icio.us users add a bookmark using their right-click menus.
• Rubilicious - Delicious bindings for Ruby.
• descriptious - Adds descriptions to del.icio.us/popular and Populicious feeds
• tagSense.net - is a Windows client for del.icio.us. Import all your bookmarks from del.icio.us, search as you type, hotkey launches.
• del.icio.us Apple Script - lets you post to del.icio.us from NetNewsWire - from the browser pane, not the subscriptions.
• del.icio.us.ness - is a Greasemonkey user script that skins del.icio.us for Firefox and Opera browsers.
• dashLicious - Dashboard widget for posting to Del.icio.us. Also optimised for Safari and NetNewsWire users.
• delimport - Index your del.icio.us bookmarks using Spotlight.
• Delicious Trackbacks - A wordpress plugin for tracking on your site/blog how many users have added your page/post to the Del.icio.us
• Audiolicious - is a Windows program that lets you turn any RSS feed into a podcast. It uses text-to-speech to convert the feed’s webpages into MP3 files.
• Delicious Plugin - is a plugin fetches RSS feeds from Del.icio.us and displays them on your blog.
• Post to del.icio.us from FeedDemon - add del.icio.us as a “BlogThis” tool to post directly from FeedDemon.
• Copy Del.icio.us Bookmarks to Furl - Import your del.icio.us bookmarks to Furl.
• Scrumptious - firefox extension that lets you create and modify del.icio.us bookmarks from a sidebar, using the tags that other people have chosen for the current webpage (as well as adding you own).
• del.icio.us Categorizer - reconstructs a hierarchic ordering for your del.icio.us links using set theory.
• Furl to Delicious - Import your Furl bookmarks to Delicious.
• Del.icio.us Auto-Complete - a Greasemonkey extension that adds tag auto-complete capabilities to the traditional del.icio.us posting areas increasing your posting speed.
• Trendalicious - is a near real-time view of website popularity trends as reflected by the del.icio.us social bookmarking service.
• Delicious Linkbacks - Add the bookmarklet to your browser, then you can get a look at what del.icio.us users are saying about (or at least how they are tagging) nearly any web page with one click.
• del.icio.us Most popular Treemap - a treemap of the most popular. [size = popularity, brightness = average age]
• MySQLicious - is a tool for mirroring del.icio.us bookmarks into a MySQL database.
• del.icio.us loader - loads your Firefox bookmarks directly into your del.icio.us account.
• introsp.icio.us - The Ruby script analyzes your del.icio.us links to generate a list of your favourite interests.
• Delibar - it will be store all your bookmarks in the system bar so you can easily access at it by select the tag and the link.
• WordPre.cio.us - imports del.icio.us bookmarks into your WordPress blog.
• Search plugin for Mozilla browsers - is a search plugin for del.icio.us that allows you to search your bookmarks.
• HuntAndGather - is a firefox extension meant to provide for some nice functionality. It opens tabs corresponding to the latest URLs stored on del.icio.us given the desired tag with several search functions.
• del.icio.us import script - a perl script which will import Netscape bookmarks file into del.icio.us
• delicious-java - is a Java API for interacting with the del.icio.us social bookmarks service.
• The Easiest Way to Publish del.icio.us Links on Your Site - how you can publish your links on your site.
• delicious-discuss - is an all-purpose mailing list for chatting with other users.
• Automatic filing with del.icio.us - file the current web page in the read_later category in one click.
• Wetaste - A WYSIWYG digest tool for Del.icio.us. You may want more than just bookmarking on del.icio.us, not just the url and simple description, but the important part of the content you ever read (including pictures and it’s visual effect).
• sid.vicio.us - creates ontologies for tags on del.icio.us
• Backing up del.icio.us - A tool for backing up your bookmarks. It helps to preserve your bookmarks for the ultimate day when del.icio.us suddenly dissapears and so do all your bookmarks and favourite urls collected over years.
• del.icio.us tag search - look up del.icio.us links that are tagged with one or more subjects.
• foxylicious - a Mozilla Firefox extension that syncs your del.icio.us bookmarks into your browser bookmarks.
• loqu.acio.us - is a bookmarklet you can use from anywhere to add your comments to your del.icio.us account. Once you’ve filled out the prompt, you’ll see your comment in a standard del.icio.us posting form: you can edit it if you like, or just press “save” to post it as is and be returned to the page you were originally on. The default tag is “loquacious”.
• extispicious - generates randomly juxtaposed tags, allowing you to draw your own meanings and revelations from the overlapping entrails.
• taga.licio.us - is tag filter for del.icio.us. It produces a page with links from selected tags, allows to integrate del.icio.us links for one or more tags into an existing page, limited to a specified “freshness”, and comes with hundreds of options. If you are a Wordpress user, it is also able to directly post into your database to, say, run the script daily at fixed hour and print links on a given subject right into your blog.
• avar.icio.us - is yet another del.icio.us posting interface with a dash of Javascript. It looks like the normal posting form, but has a couple of special feature like auto-completion in the tag box and suggestions of related tags you’ve used before.
• nutr.itio.us - is a bookmarklet that allows selection of the text for the description of the link to add to your delicious links
• delicious firefox plugin - integrates del.icio.us with Firefox.
• Durl- is an RSS feed for del.icio.us URL queries. Enter a url to retrieve information about people who delicious’ed it. del.icio.us already provides this service, Durl completes that with an RSS feed containing those results and trend history graphs. You can also see a list of popular trends graphs.
• gre.gario.us - is a tool to find people who have bookmarked the same links you have on del.icio.us. The purpose is to attempt to find people who may have similar interests as you do in a more direct way than using tags.
• del.icio.us + Gmail - A script which runs once a day, crawls each link and sends an email to a gmail account with the ‘From’ field being the page url, the ‘Subject’ being the tags, and the body being a copy of the page.It helps to keep a cache of every page you bookmark just in case the page disappears. In addition to searching the page text, I can filter by tags by using an advanced search.
• del.icio.us Tag Stemmer - Uses Porter stemming to show where you’ve made different del.icio.us tags with the same English word stem. You can use it to help clean up your personal fauxonomy.
• delicious2safari - imports your del.icio.us bookmarks into Safari.
• cocoalicious - A cocoa del.icio.us client for Mac OS X.
• Sorting del.icio.us/popular - a bookmarklet that will sort del.icio.us/popular not just by total number of posts, but by the ratio of recent to total posts.
• Pasta - is a plain text pasting service for del.icio.us
• Experimental del.icio.us Posting Interface Thing Generator - a new posting interface for del.icio.us. The new interface provides your tag list, a list of popular tags for the page you’re bookmarking, your full tag list, and some popular tags in general.
• Mapping del.icio.us with Anthracite and OmniGraffle - a tutorial for creating visual exploration of del.icio.us tags, but not inclined to write custom Perl code to do so.
• delicious.py allows you to access the web service of del.icio.us via it’s API through python. This library uses only the standard python library.
• Extended del.icio.us bookmarklets - to extend del.icio.us functionality.
• Skinning del.icio.us - tips to apply skins to del.icio.us interface.
• Delicious Link Checker is a perl script which will retrieve all of the users links and check them, reporting if they are still accessible, or the error code (and slightly more helpful message) if not.
• Make your own Multipost Bookmarket Tool - Bookmarklet maker to allow one click submit to send sites to places like Furl or del.icio.us at the same time.
• foaflicious - is an application for generating a FOAF file from your del.icio.us inbox.
• del.icio.us Illogical Interface - [del.icio.us] bookmark filtering with logical operators on tags
• Backup Del.icio.us with Excel - helps to backup your bookmarks in Excel 2003.
• Delicious Mind Map Maker - this program will make a Clustered Mind Map out of your delicious entries and add the map to the list.
• Oishii - is kind of a del.icio.us mini-zeitgeist. It polls the del.icio.us front page every 5 minutes, and returns all sites bookmarked by at least 30 people.
• BookmarksToDelicious - is a standalone Python client for posting bookmarks from a file to the delicious
• Bunnyhug Updater del.icio.us - an application that lets you download all of your del.icio.us bookmarks and save them on your local machine.
• Del.icio.us popular sites - displays the most popular new sites in last 24 / 48 hours and of all time.
• del.icio.us Smart Tagging Plugin for WordPress - to add this capability to your WordPress blog.
• spid.ero.us - helps to find fresh bookmarks from various social bookmark managers like del.icio.us, spurl, and furl.
• fac.etio.us - faceted navigation of del.icio.us feeds.
• Related del.icio.us Links in Your Sidebar - using RSS, PHP and Magpie.
• Integrating Bloglines and del.icio.us - to easily post things you read in Bloglines to delicious
• Gnomolicious is an GNOME applet that help you post links on the del.icio.us site simply by drag’n'dropping them.
• Services Delicious is a client for the REST-based web service of del.icio.us. It allows you to select, add and delete your bookmarks from any PHP script. You do not need to worry about the XML that is sent or how to build the REST urls.
• Graph del.icio.us subscriptions network - browse the network of del.icio.us users as defined by their inbox subscription lists.
• Graph del.icio.us related tags - graphically browse related del.icio.us tags.
• off.icio.us grabs a copy of the popular page and main page every 5 minutes and extracts some stats and links.

This post is constantly updated. Post comments to suggest any tools I missed here. I request you to kindly provide a link back to this post.

Here is a list of Official Google Search Tools

• Google - The Search Engine.
• Google Advanced Search - search google based on specific parameters
• Google Suggest - As you type into the search box, Google Suggest guesses what you’re typing and offers suggestions in real time.
• Google Personalized Search - make your search experience more relevant to you.
• Google Search History - Keeps a record of all searches and clicked results while a user is logged into a Google Account
• Google Blog search - Google search technology focused on blogs
• Blogger Blog Search - Search for blogs all over the web
• Google Directory - Search the web organized by topic into categories.
• Google Alerts - sends emails automatically when there are new Google results for your search terms.

Special Searches

• Google Video - Search TV programs and videos
• Google Image Search - comprehensive image search on the web
• Google Music Search - search for music
• Google Book Search - Search the full text of books (and discover new ones).
• Google Catalogs - helps you browse and search merchant-provided catalogs
• Froogle - Google’s shopping search engine
• Google News - Search and browse 4,500 news sources
• Google Scholar - search for the most relevant research across the world of scholarly research.
• Google Maps - View maps, get driving directions, and search for local businesses and services.
• Google Public Service Search - offers educational institutions and non-profit organizations worldwide free SiteSearch, which enables users to search your website, and free WebSearch, which enables users to search the Internet.
• Google’s University Search - enables you to narrow your search to a specific school website for things like admissions information, course schedules, or alumni news.
• Google Ride Finder - view taxi or shuttle locations in several cities.
• Google Base - submit all types of online and offline content that is hosted and made searchable online.

Google Topic Specific Search

• Google’s Special Searches - enable you to narrow your search to a specific topic.
• Google Apple/Macintosh Search - Search for Apple/Macintosh-related sites using Google
• Google Microsoft Search - Search Microsoft-related sites using Google
• Google Linux Search - Search all penguin-friendly pages
• Google U.S. Government Search - Search all .gov and .mil sites
• BSD Unix - Search web pages about the BSD operating system

For Webmasters

• Google AdSense for search - Opportunity to earn money by Google whenever your users click on the targeted Google adsense ads on search results pages.
• Google Free - provide Google search results to users who want to search the web or just your website.
• Site-flavored Google search - delivers web search results that are customized to individual websites.
• Customizable Google Search - you can customize your results display to include background, text and link colors you select.
• Google Search Appliance - is a hardware and software product designed to offer large businesses the productivity-enhancing power of Google search.
• Google Mini – Google search for your website and intranet

Desktop Search Tools

• Google Deskbar - Search using Google without opening your browser
• Google Desktop - a desktop search application that provides full text search over your email, files, music, photos, chats, Gmail, web pages that you’ve viewed.

Google Search Mobile Services

• Google SMS - Send a text message wiht your search query, and receive text message with search results
• Google SMS UK - enables you to send queries as text messages from your mobile phone or device and easily get precise answers to your questions.
• Google Mobile : Web Search - Google Web Search results on your phone or mobile device
• Google Mobile : Mobile Web Search - search for sites that have already been designed to fit the screen of your phone or device
• Google Mobile : Image Search - Google Image Search results on your phone or mobile device
• Google Mobile : Local Search - get local listings, maps and driving directions on your mobile phone or device

Search Toolbars

• Google Toolbar - Add a search box to your browser
• Google Toolbar Beta - Test the latest version on IE.
• Google Toolbar for Firefox - Add a search box to your browser
• Google Toolbar for Enterprise - provides powerful productivity features including easy access to Google, customized search buttons, instant search suggestions, and a pop-up blocker.
• Google Browser Buttons - add to a personal toolbar giving you access to Google search technology without taking up extra screen space.

Here is a list of Third party Google Search Tools

Firefox Extensions

• CustomizeGoogle - enhances Google search results by adding extra information (like links to Yahoo, Ask Jeeves, MSN etc) and removing unwanted information (like ads and spam).
• Googlebar Lite - A light-weight Google search toolbar for Firefox.
• GoogleTabs - Adds a context menu option to open Google search results in tabs.
• Advanced Dork - Highlight a word or phrase, right click, and choose from over 15 Advanced Google Operators, A google search page is opened in either the same tab or a new tab, the results contained in the search will contain the highlighted text inside the chosen Operator.
• GooglePreview - Inserts preview images (thumbnails) of web sites and Amazon products into the Google and Yahoo search results pages.
• Feeling Lucky - Performs Google’s “I’m Feeling Lucky” search with any selected text and opens the result in new a tab.
• Aggregate Yahoo! and Google - Search Yahoo and Google simultaneously
• GooglebarL10N - is the localized version of Googlebar with Menues & Texts in German, Italian or Spanish.
• Google Advanced Operations Toolbar - provides a shortcut to some of Google’s advanced search functions.

Google Page Modules / Scripts / Widgets / Bookmarklets

• Search History - View your search history. Google Personal Module.
• Random Site Image - Displays a random image from a given website (via Google Images site search). Google Personal Module.
• Google Search Greasemonkey Scripts - use the power of greasemonkey to modify the web.
• Google Search Yahoo Widgets - collection of Google search widgets in various formats
• Milly’s Bookmarklets - Bookmarklets that use the Google search engine to search for stuff.

Multi Search Tools

• Simply Google - search all Google services on one page. Lots of forms.
• HotDaddy - search all Google services on one page. Lots of icons.
• Google Total - search all Google services on one page. Drop down menu.
• GahooYoogle - search multiple Google and Yahoo services together side by side.
• Twingine - Google and Yahoo search side by side.

Miscellaneous Tools

• Google Current - airs every half hour on Current TV and provides a look at what the world is searching for on Google.
• Googlewhack - a query consisting of two words (without quotation marks) entered into Google’s search page that returns a single result.
• Cookin’ With Google - allows you to provide a list of ingredients and get back a list of recipes that Google finds for you.
• Goofresh - is a way to search for sites added today, yesterday, within the last seven days, or last 30 days.
• Google Fight - Compare the number of results for two competing keywords.
• GoogleDuel - a popularity contest using the Google search engine.
• Random Web Search - it generates a random word, then searches that word on the web using Google.
• Googlematic - Enables searching of Google via AIM or MSN Messenger.
• Googlism - will find out what Google.com thinks of you
• Google Tool - Search multiple google datacenters simultaneously.
• elgooG - a mirror image of Google
• LostGoggles - adds search site preview images, Amazon pricing, site info links and the Open-in-New-Window-button. Formerly “More Google”.

In the end, this amazing list of Google Web Search Features lists the many special features to help you to find exactly what you’re looking for. Google Zeitgeist lists the current Google Search patterns, trends, and surprises.

This post is constantly updated. Post in comments any tool you wish to add to this collection. A link back would be appreciated.