Rahul Aryan

Zen Projects and Rahul have agreed to team up to bring substantial resources into the development of AnsPress and its related themes and extensions, read the full announcement here: https://anspress.net/blog/anspress-update-annoucement/
AnsPress is an open source, developer friendly, question and answer plugin for WordPress. AnsPress adds a full question and answer system to your existing WordPress site. It can be used to create a Q&A network similar to StackOverflow and Quora, or be a single page on existing site. The plugin supports multiple languages, shortcodes, reCAPTCHA, email and push notifications, and more.
AnsPress is not just limited to questions and answers. It can be used in many different ways, like a bug tracker, an internal Q&A board, support ticket forum, FAQ, and more. Anspress is trusted and used by many popular companies and sites at scale.
Performance and Optimizations:
In our latest release, we’ve made big improvements to performance and have tested the plugin in many different server environments. It has run smoothly on every type of server with minimal impact on load times. AnsPress (including all of its functionalities) is very fast compared to other Q&A plugins. In the latest release we have made major improvements to reduce MySQL queries and to increase the page load speed for all page templates within the plugin.
Developer Friendly:
AnsPress is built with developers in mind and can easily be extended to fit your needs. All parts of the template layouts can be overridden. Our source code follows WP coding standards and is properly commented. We are working on a documentation site which will be available soon.
Contributors:
This plugin wouldn’t be possible without the huge amount of contributions we have received. Check our contributors at https://anspress.net/contributors/
Support and Demo:
We provide support on our site: https://anspress.net/questions 
Our support section uses the actual version of AnsPress, so you can check out the support site if you want to see full working version. 
You can also take the demo site for a test drive at https://anspress.net/demo/
AnsPress Key Features:
<ul>
<li>Submit / Filter / Order / Edit / Delete Question</li>
<li>Answer / Comment</li>
<li>Vote and Select Best Answer</li>
<li>Notification Emails and Web Push Notifications</li>
<li>10+ languages supported</li>
<li>Captcha supported</li>
<li>Shortcodes available</li>
<li>Private/Public for Question and Answer</li>
<li>Ability to Follow Questions / Answers</li>
<li>Featured (Sticky) Question</li>
<li>Closed questions</li>
<li>Flag/report questions and answers to moderator</li>
<li>Basic user profile</li>
<li>BuddyPress integration</li>
<li>More to come…</li>
</ul>
Free Add-ons:
<ul>
<li>Reputations</li>
<li>Tags</li>
<li>Categories</li>
<li>Bad words filter</li>
<li>Email notifications</li>
<li>reCaptcha</li>
<li>Dynamic text avatar</li>
</ul>
AnsPress is frequently updated and more features are added based on feedback from our users. This means you are welcome to give us feedback and suggestions as to what you would like to see or need in the plugin. Visit our Github project https://github.com/anspress/anspress or visit our community https://anspress.net/questions/ to get updates and leave feedback.
Page Shortcodes
Use this shortcode in the base page of AnsPress to work properly 
 [anspress]

AnsPress – Question and answer

Very nice plugins but much work is still needed.

Very nice plugins

A free question and answer plugin for WordPress. Made with developers in mind, and highly customizable.

Boone Gorges

<a href="https://webwork.maa.org" rel="nofollow ugc">WeBWorK</a> is a free and open source online STEM assessment platform sponsored by the Mathematical Association of America (MAA) and used by more than a thousand colleges, universities, and high schools across the U.S. and around the world. The WeBWorK Open Problem Library provides access to more than 50,000 assessment/homework problems created and freely shared by the members of the WeBWorK community for others to curate, remix, and use with their students.
WeBWorK provides an option for students to email their professor if they have a question about a WeBWorK problem. However, this one-on-one communication model leaves students isolated from their peers and can result in the instructor answering the same question dozens of times. WeBWorK Q&A helps students learn from one another by sharing their questions in a community space. Instead of working on assignments alone or interacting only with their instructor, students using WeBWorK Q&A can become part of a community of learners, working together on the same material and offering mutual support. Questions can be answered by faculty, other students, tutors, and so on, enabling faster response times.
Features:
<ul>
<li>Ask questions anonymously</li>
<li>Use LaTeX in questions and responses</li>
<li>Include images in questions and responses</li>
<li>Browse and filter questions</li>
<li>Like helpful answers</li>
<li>Subscribe to or unsubscribe from email notifications about a question</li>
<li>Accessible, responsive recommended theme</li>
</ul>
Check out the <a href="https://openlab.citytech.cuny.edu/webwork-qa-plugin/" rel="nofollow ugc">documentation site</a> for more details.
<h3>Credits</h3>
WeBWorK Q&A was created by a team based at <a href="http://www.citytech.cuny.edu/" rel="nofollow ugc">City Tech</a> (New York City College of Technology, City University of New York) as part of <a href="https://openlab.citytech.cuny.edu/openinggateways/" rel="nofollow ugc">Opening Gateways</a>, a City Tech initiative funded by the U.S. Department of Education’s Developing Hispanic-Serving Institutions program* to support student success in mathematics courses that serve as gateways to STEM disciplines.
WeBWorK Q&A was developed in partnership with <a href="https://openlab.citytech.cuny.edu/" rel="nofollow ugc">The OpenLab at City Tech</a>, an open platform for teaching, learning, and collaboration; anyone can create an OpenLab using the free and open source software <a href="https://wordpress.org/plugins/commons-in-a-box/" rel="ugc">Commons In A Box OpenLab</a>.
*Disclaimer: materials developed do not necessarily represent the policy of the Department of Education, and you should not assume endorsement by the Federal Government.

WeBWorK Q&A

WeBWorK Q&A creates a community forum where users can ask and answer questions about WeBWorK problems.

AnsPress – Question and answer vs WeBWorK Q&A