When comparing XenForo vs Fruum, the Slant community recommends XenForo for most people. In the question“What are the best web forum software packages?” XenForo is ranked 7th while Fruum is ranked 13th. The most important reason people chose XenForo is:
Good stability and functionality.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Stable
Good stability and functionality.
Pro Fast
Works really fast.
Pro Lots of styles and extensions avaible
Pro Extensible
XenForo is built to be the most extensible and flexible community software ever.
Pro Stable, well written, developed by the guys who once made VBulletin 3.x the best commercial forum software at the time
Price is only $140, one of the "cons" claims it runs up to $610 if you by all t he bells & whistles, but scarcely anyone pays more than $140
Pro Single Sign On (SSO)
Fruum can tie its user authentication with the authentication system of the hosting website, thus utilize the existing user base without requiring multiple sign-ups.
Pro Slack integration
Plays well with Slack out of the box. Get notifications when users post new stuff or use the /fruum command to query the forum.
Pro Realtime
All updates in the forum happen real-time. No reloads required.
Pro Extensible
New functionality can be added using a plugin interface written in JavaScript.
Pro Free and open source
Source code is available on GitHub under Apache License.
Pro Embeddable
Can be embedded in any website using a small JavaScript snippet and get activated on-demand as a drawer or be setup as a traditional forum.
Cons
Con Expensive
140$ for simple use, price can reach 610$ for complete system and service.
Con Closed source
Con Unique SQL system
Only MySQL system.