Quora

Stack Overflow is a free, community-driven, reputation-based Q & A site for computer programmers. No membership is required to ask questions or provide answers to questions by others. Registered users...

Stack Exchange is a fast-growing network of 84 [and counting] question and answer sites on diverse topics from software programming to cooking to photography and gaming. We are an expert …

Super User is a Q&A site for computer enthusiasts that's free. Free to ask questions, free to answer questions, free to read, free to index, built with plain old HTML, …

Server Fault is a Q&A site for system administrators and IT professionals that's free. Free to ask questions, free to answer questions, free to read, free to index, built with …

Yahoo! Answers is a way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.

Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias. Ask questions, get answers.

Quindo is the new way to ask and answer questions on-the-go, in short form. Be part of a global community where you contribute answers, challenge others and commit yourself to …

Answerz.net lets you search all the major questions & answers websites on the internet from one search box. Using this service can save you a lot of time and effort …

BeenAsked.com lets you search all the major questions & answers websites on the internet from one search box. Using this service can save you a lot of time and effort …

Amazon's Askville is a community where people love helping others by answering questions.

Twithelp™ lets you use the huge Twitter community to get help with anything you want - simply and quickly. You can also help other people with things you know about, …

Тостер - онлайн сервис вопросов и ответов с открытой регистрацией. На «Тостере» можно получить ответ на вопрос по любой теме IT от участников сообщества, хорошо разбирающихся в этой теме.