Apps for all platforms with any license

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Show 20 less popular platforms
  • Stack Overflow icon

    Stack Overflow

    Stack Overflow, part of Stack Exchange , is a free, community-driven, reputation-based Q & A site for computer programmers.

    Free Web Android iPhone

  • Reddit icon

    Reddit

    Reddit is a social news site allowing users to submit articles, vote on them, and engage in discussions. Like other social news websites, Reddit is divided into categories.

    Freemium Web Android iPhone iPad

  • Stack Exchange icon

    Stack Exchange

    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.

    Free Web Android iPhone Android Tablet iPad

  • Quora icon

    Quora

    Quora.com is a question/answer service allowing users to pose questions that other users can answer, each question and answer can have comments, each users can write one individual answer and there can be a summary answer.

    Free Web Android iPhone

  • Akinator icon

    Akinator

    Akinator the Genius can read your mind and tell you who you're thinking of by answering a few questions.

    Freemium Web Android iPhone Blackberry Windows Phone iPad Amazon Echo (Alexa Voice Service)

  • Slant icon

    Slant

    Slant is a collaboratively edited resource that helps you quickly make decisions. Instead of having to read multiple blog posts or dig through comment threads you can read summarized perspectives on topics with no definitive answer.

    Free Web

  • Super User icon

    Super User

    Super User, part of Stack Exchange , is a Q&A site for computer enthusiasts that's free.

    Free Web

  • Glisser icon

    Glisser

    Glisser makes presentations interactive, by combining them with live audience Q&A and polls.

    Freemium Mac Windows Web

  • Niftio icon

    Niftio

    Niftio is a new presentation platform that aims to help any presenter master the art of presentations from the moment he creates the slides to the moment he gets off the stage.

    Free Web

  • Server Fault icon

    Server Fault

    Server Fault is a Q&A site for system administrators and IT professionals that's free.

    Free Web

  • Apps and Oranges icon

    Apps and Oranges

    Apps & Oranges helps people find and recommend the best apps for getting stuff done. It's social Q&A: Question & Apps.

    Free Web

    • Discontinued No longer updated. Last actions date back to 2012 and new apps cannot be added due to unresolved issues. In 2013 Brian Morykon, Co-founder and Designer of the site, talked about a new version of Apps & Oranges more focused on web apps: https://getsatisfaction.com/appsandoranges/topics/cannot_add_app
  • Pubble icon

    Pubble

    Pubble is the world's best Q&A platform. We make it simple and easy to add a great Q&A platform to any blog, website or Facebook page.

    Commercial Web

  • Wooclap icon

    Wooclap

    A simple solution to interact with your audience during a live conference, a corporate meeting or inside a classroom.

    Freemium Mac Windows Web Windows Mobile iPhone iPad

  • Question2Answer icon

    Question2Answer

    A Q&A site helps an online community to share knowledge. No matter what your area of interest, people with questions can get super answers fast. Question2Answer is a popular Q&A solution.

    Free Open Source Mac Windows Linux Web MySQL Community Edition Self-Hosted PHP

  • Yahoo! Answers icon

    Yahoo! Answers

    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.

    Free Web

  • Aardvark icon

    Aardvark

    Ask questions, get *live* answers from your network! Aardvark finds the perfect person to answer any question in real-time.

    Free Web

    • Discontinued In February 2010 Aardvark was acquired by Google. It was discontinued in September 2011.
  • Askme icon

    Askme

    Startups get your queries answered by the World's Top Investors and Entrepreneurs. Startups + Investors +Entrepreneurs Connect.

    Free Web

  • AskBot icon

    AskBot

    Askbot is a Q&A system, like StackOverflow, Yahoo Answers and some others. Askbot is based on code of CNPROG, originally created by Mike Chen and Sailing Cai and some code written for OSQA.

    Freemium Web Self-Hosted Python Django

  • OSQA icon

    OSQA

    OSQA is the free, open source Q&A system you've been waiting for. Your OSQA site is more than just an FAQ page, it is a full-featured Q&A community.

    Free Open Source Web Self-Hosted Python Django

  • iBoske icon

    iBoske

    Life is full of decisions, have the answers at your hand. Join the #1 decision making and question solver expert community. iBoske allows anyone to easily create decision trees. It can be used as a troubleshooting tool.

    Free Web

  • Spring.me icon

    Spring.me

    Spring.me, formerly Formspring, is a webspace for conversations - where you can meet interesting people, express yourself about anything and expand your life. With over 30 million members, Spring.

    Free Web Android iPhone

    • Discontinued Spring.me has joined forces with https://alternativeto.net/software/twoo/
  • Pigeonhole Live icon

    Pigeonhole Live

    Audience engagement tool for crowdsourced Q&As, polls, and surveys. Built for mobile, works on all web-based interfaces. Perfect for enterprises and companies as a backchannel for their town halls, all-hands meetings and conferences.

    Freemium Web Android iPhone iPad Blackberry 10

  • Ask.fm icon

    Ask.fm

    An obvious clone of formsping.me ( Spring.me ), ask.fm offers creating a profile URL that can be addressed by others users with questions.

    Free Web Android iPhone Windows Phone

  • CodeProject icon

    CodeProject

    CodeProject is a community of Software development and Design developers joined together with certain common goals: to learn, to teach and to have fun programming.

    Free Web

  • Superbly Space icon

    Superbly Space

    Superbly Space is an IT community and directory of apps, services and more. Q&A IT questions and answers. Difficult issue and unsolved problems, system, not working program, or code error? It is not a problem for our community.

    Free Web