You can check my fork of the Q2A Ultimate SEO plugin. You will have to whitelist each domain, though. Otherwise, undesired users will be able to link to undesired sites.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.
April 20, 2021: Q2A 1.8.6 released!