I think the best forum software for SEO is Jatra. It's been just a few weeks since I set my community on a subdomain and already seeing traffic without building any backlink so far.

But there are other forum software like phpBB, xenForo and Invision Power Boards which you can look at. They all are good with SEO.

Thank you for the mention, Paula. SEO is important aspect of any forum software for public communities.

I poured everything I learned about SEO into Jatra and it does offer exceptional SEO capabilities. I'd like to highlight a few SEO features that Jatra offers:

1. Automatic HTTPS: You don't have to manage it anymore. It's done for you.
2. Fast loading: Every page on Jatra loads within < 1.00 second. Google loves it.
3. Automatic Structured Data: Jatra automatically adds relevant structured data snippet to posts
4. Semantic HTML: We pay a lot of attention to how HTML is rendered in browser.
5. XML Sitemap: We automatically refresh and submit sitemap to Google

Those are just some of the SEO optimizations backed into forums powered by Jatra.

But that said, there are other forum software that have above-average SEO capabilities:

1. phpBB
2. Discourse
3. XenForo
4. Flarum

I hope this answers your question. Let me know if you want more information.

XenForo and Discourse are good with SEO. However, Jatra tops all of them. After setting up Jatra on our brand new domain, we expected at least 3 months to get our first impression. However, the impressions started rolling in about 2 weeks after publishing our first thread.

Even our marketing and SEO teams were surprised.