Logseq is a Roam-like thing in the browser that supports both Markdown and Org Mode. It uses Github as a backing store, which means that you can use it both in the browser, and via Emacs + (Ma)Git. As of this bug fix Logseq seems to have good (basic) compatibility with Org Roam! Please note it’s required to modify config.edn, as indicated below.
{:journal-basis "daily"
:project {
;; Selected public notes can be published to https://logseq.com/your-project-or-your-username.
:name ""
:alias ""
;; your twitter handle
:twitter ""
;; description supports both hiccup and html
:description ""}
:org-mode/insert-file-link? true ;; add this, file continues below