Desktop tray notifier that alerts you when someone posts an answer or comment to a question you are tracking; Cross-platform builds available for Windows, Linux and Mac OS X

Droidstack is an Android application that allows you to browse stack websites in a cool, native but SO-like way. Check the website for download instructions, reporting bugs, etc.

New Q! is a Google Chrome Extension that notifies you of new questions of interest. You just set which tags interest you, whether you want to be notified of questions that have all of those tags or those that have any of those tags, and which Stack Exchange site to monitor. When new questions appear on the site you are notified with a Desktop notification. You can see the question's title, votes, and number of views. You can click on the link in the notification to open a new tab at that question or click on the New Q! button in Chrome to go to open tabs for each of the last batch of new questions. Enjoy!

I created this app because I always wanted to create an open source application. But I never had an idea on what to do. So I used my skill in BlackBerry development to build an app with the API provided by StackOverflow.

SixToEight is an iOS application for accessing sites in the Stack Exchange family

StackFlair generates a combined flair representing all of your associated StackExchange accounts.

StackGuru is a Jabber/XMPP bot which gives you a command line interface to Stackapps sites, including Stackoverflow, Serverfault and Superuser. The bot allows you to follow questions tags by giving you a notification each time a new question is ask on the followed tag. You can also follow a question which will send you a notification each time someone post a comment or an answer on the question.

StackTrace for iPad is the best way to become more knowledgeable about coding and development. Whether you’re a hobbyist or a professional, StackTrace provides the ideal experience for exploring the expert community at Stack Overflow.

StackMobile is a low-bandwidth version of the main StackExchange sites designed specifically for smartphones. It has a number of handy features that make browsing the sites easy and hassle-free. It has been tested on Android, webOS, and reportedly works well with the iPhone.

Stay ahead of the pack! Get new questions from any Stack Exchange site growled to your desktop within seconds of being asked. You can choose to recieve notifications from any site and you can choose which tags to include or exclude.

Get alerted on twitter about new questions that match searched for keywords on the trilogy of sites.

A Mac OS X application using the Stack Exchange API. Implements most features of the API

Plain Text (Lynx, Links) optimised presentation of the SOFU Family of websites

Stack2Blog is a web service that helps you turn your Stack Overflow answers into blog posts. It makes copy-pasting your answer's html code to your blog easy, and keeps track of the answers you've already turned into posts.

There are a lot of interesting questions in the Stack Trilogy. But it is difficult to find your way through the huge amount of content when the only way to browse through it is lists. SpaceOverflow lets you capture the content on the Stack trilogy in a whole new way: Questions are visualized in 3D space! The closer a question is, the newer it is. The further it is in the center, the more votes does it have. Zoom with your mouse wheel, and pan by dragging. When you click on a question, a browser is opened that gives you all possibilities that you have when you regularly visit a Stack site.

I always disliked having to sit there and refresh a question on any of the Stack Exchange sites waiting for something to update. I would rather ask a question, go do something else, and wait to be notified of an update. The StackStalker Google Chrome extension was created exactly for this purpose.

SOLT is an implementation of this idea of Jon Skeet's. Basically, it's a fun little app where you enter your Stack Overflow (or Server Fault or Super User) username, and it ranks you against other members, based on reputation change in a single month.

StackPrinter is a website that pulls the main details of a given question, all its answers, comments and votes formatting them in a simple essential printable view.

StackTack is a widget for bloggers and writers to easily tack questions and answers from the StackExchange sites such as StackOverflow, ServerFault and SuperUser, into their articles. The widget remains up to date as answers get added, modified, voted on and accepted.

Track a User’s Activity Over all Stack Sites

StackWatcher is a Windows-platform app that sits in your notification area and watches all your associated StackExchange accounts. A notification toaster popup appears when you earn rep, your favorites change, and badges are awarded.

Stack Bragger lets you brag to your Facebook friends whenever you ask new questions or earn new badges at StackOverflow, SuperUser or ServerFault

Ever noticed that you can only see one tag question list at a time on StackExchange sites? Using a TweetDeck-inspired UI, StackedDeck will allow you to monitor questions with any tag on any StackExchange site.

so2pdf lets you convert Questions and Its Answers to PDF files.It uses FLEX for the Front End which calls a .net web service which uses wkhtmltopdf to generate PDF files.

iPhone client for Stack Exhange

Stack Reader for iPad is going to be a convenient way to everyday-read of any site(s) from the Stack Exchange Network.

StackTagz graphs the tags you are interested in over time.

Stack Users Lite is a simple single page JavaScript application that searches all Stack Exchange sites for users by partial or complete username and allows you to view the associated accounts for a particular user.

StackAd pulls the answers from the OSS Meta question that have 6 or more upvotes and displays a random ad in a box. The code is provided as a .js file you can embed in your pages. (And hotlink if you wish.)

MyWebCareer is a free web application that enables you to discover, evaluate and monitor your Online Career Brand. When you register for the open beta, we attempt to locate and retrieve your reputation and tags on stackoverflow, serverfault and superuser. Your reputation and tag data is incorporated into your CareerFootprint and evaluated by our scoring engine. The application will automatically refresh your data and career score each month.

Follow your favourite Stack Exchange sites easily! Newt will notify you about questions on interesting topics, answers to your questions and comments for you.

A tongue-in-cheek application to give people, who are sick of Jon Skeet and his excellent answers, a head-start on the kinds of questions he typically goes for.

This handy little applet can be added to any panel on your Gnome desktop. It displays your current reputation on StackOverflow and refreshes the number at a given interval. Currently StackOverflow, SuperUser, ServerFault, Meta, and StackApps are supported. The application is written in Python.

StackOverflow home screen widget. Displays top question from your chosen site/tags/sorting - click widget to see top 10.

stack3D is a 3D client for the StackExchange sites. It will eventually allow you to browse questions, answers, and users on the sites in 3D.

Stack Exchange client for iOS.

Soapi.FindUser (silverlight) is provides a means to quickly find any user anywhere is the Stackiverse.

Soapi.Explore SL is a Silverlight based annotated test harness for the Stack Exchange API. All API methods and parameters are fully supported.

StackEngine - facebook application to embed reputation, badges, etc. from Stack Exchange Accounts to facebook profile tab. Your friend can check out the profile tab to know what you’re doing on Stack Exchange, and the friend can click back to your canvas page.

Stack Exchange Notifier is a handy extension for Google Chrome browser that displays your current reputation, badges on Stack Exchange sites and notifies you on reputation's changes and comments that are directed to you. All StackExchange sites are supported.

This handy gadget can be added to iGoogle or left-hand nav panel of any Gmail account. It displays your current reputation on selected StackExchange sites and notifies you on reputation changes and comments that are directed to you. Gadget supports all StackExchange sites.

StackBot is a small .Net application that tweets popular questions from StackExchange sites according to specified parameters.

FullStack is an iPad app that provides read only access to the following Stack Exchange sites: Stack Overflow, Server Fault, Super User, and Ask Ubuntu. Currently users can browse through all questions with easy navigation through different categories including Active, Featured, Hot, New, and Unanswered- just to name a few. Search capabilities also exist to find and locate a particular question that you may have. There is also support for bookmarking questions to provide easy and quick access to those questions that are particularly interesting to you. Please note that currently the Stack Exchange sites to not provide any write capabilities but as soon as version 2 of their API is released we will integrate as fast as humanly possible. Lastly, please note that we are not affiliated with Stack Exchange in any way except for the fact that this application uses their awesome API

se-flair produces combined-account flair in the form of a short HTML document suitable for iframe-embedding, a javascript file that inserts the same HTML, or a PNG image, each of which fits with the look of the standard flair on StackExchange sites. Using HTML (either the iframe or javascript) allows for links to multiple specific-site profiles and tooltips showing total rep and specific-site rep. Totals are calculated across all linked accounts (as opposed to the standard combined StackExchange flair, which only uses sites where the user has at least 200 rep).

Adds embedded jsFiddle preview to the questions/answers posts.

Suggestion Status is a small userscript which displays the status of your suggestions using color codes; accepted, rejected and yet to be reviewed. This allows you to immediately see the status of your suggestions, without first clicking the link for each suggestion.

Preserves new Stack Exchange Inbox messages until they are actually read, not just viewed in the inbox. Items appear in the global inbox as they normally would, but the only items marked as read are ones that you click on. If there are unread items in the inbox, but you've viewed the inbox already, the unread count is displayed in blue instead of red. This Chrome Extension was inspired by a Meta Stack Overflow feature request.

Stackoverflow sentiment search engine is designed to solve "information overload" using "sentiment analysis" on comments. It utilises stackoverflow API to get a bunch of posts based on user input and prints on the screen the ones that have more positive comments/answers than the rest of them. uClassify (is a free web service where you can easily create your own text classifiers. You can also directly use classifiers that are shared by the community) API is used to classify the text using custom made classifiers.

This app will provide you LIVE desktop notification for new questions posted on StackOverflow. You can add your favorite tags and it will continue searching for new questions. If it finds a new question it will instantly alert you. I created this app with a hope that it will greatly help the experts to get LIVE notification. It took about 15 days to complete this project.