Dumple is the simple, open-source blogging platform designed for dumb people (I mean that affectionately).
It is built to solve the problem of creating a blog that literally anyone in the family can work out how to post to. It should also be dead simple for anyone with basic web knowledge to modify the site to their heart's content. Stay tuned for equally simple hosting (currently, deployment is restricted to people who know how to Linux).
Dumple is simply a web interface to a Jekyll site. Using a static site generator (1) allows for fast loading even on low-end servers, (2) makes it really easy to edit the site templating etc., (3) allows extremely simple archiving, and (4) is much easier to implement.