Best Forum plugin for WordPress:
WpForo is a Best Forum plugin for WordPress. It is a feature-rich and modern WordPress forum plugin. The plugin is suitable for all devices like desktop, mobile, and tablet layout and suitable small as well as large communities and all types of discussion forums. The plugin offers three different layouts: Extended, Simplified, and Question and Answer Layout.
It is having build-in SEO-Friendly, Expandable, and gives us the option of easy setup for new bees and create its own 8 pages, facilitate to provide member profile, given then ranks, easy Moderation and good control overall to admin. I prefer it due to its user-friendly interface and ready to hit the ground running.
There are many plugins out there but it's free and gives more Premium like features. So in my point view it best in all Forum Plugins.