[jdp]

Reminds me of pjax [1], except pjax works over XHR instead of an iframe and uses pushState by default to keep the back button working.

[1]: https://github.com/defunkt/jquery-pjax

[darylteo]

Non jQuery version (and relatively newer ) https://github.com/MoOx/pjax

[captn3m0]

GitHub itself used pjax heavily and I liked those interactions far more than the newer React ones, the HTML was much more semantic for one, with middle click always being respected.