Since self-hosted is a requirement (?), then you might also find EffectiveDiscussons (ED) interesting — here's how embedded comments looks: https://www.kajmagn

Since self-hosted is a requirement (?), then you might also find EffectiveDiscussons (ED) interesting — here's how embedded comments looks: https://www.kajmagnus.blog/new-embedded-comments https://www.kajmagnus.blog/new-embedded-comments (scroll down to the bottom) it has more "modern" features than Isso, e.g. FB and Gmail login, & some new ideas. Here's an about page with more info: https://www.effectivediscussions.org/blog-comments https://www.effectivediscussions.org/blog-comments (I'm developing it.) Embedded comments requires JS, but ... the discussion forum part of ED (not embedded) works like Web 2.0, that can fallback to Web 1.0 (I mean, static HTML with no JS). Although this is only partly implemented.