RefreshLess

RefreshLess layers JavaScript-based navigation on top of Drupal's existing server-rendered HTML to provide the kind of smooth, fast, and responsive experience users expect. By fully embracing progressive enhancement, you don't need to choose between a web site/web app that continues to work if JavaScript breaks or something that feels like a single page app (SPA) user experience - you can have both.

-- RefreshLess on Drupal.org

The 2.x rewrite of the project has been done entirely by Ambient.Impact, with a lot of that time unpaid. Unfortunately, to exist is to have bills, and bills require bill repellent. Donations will be used to fund future work on RefreshLess in an attempt to make it sustainable to do so.