JBake is a Java based, open source, static site/blog generator for developers & designers
DownloadSource available on GitHub, licensed under MIT License
The binary distribution runs on Windows, Unix/Linux and Mac OS X.
Supports AsciiDoc, Markdown and good old HTML formatted content.
Structure your content any way you see fit.
RSS feed, archive and tag support.
View your draft content before publishing it and making it available to the world.
Binary distribution contains everything you need apart from a JRE, no complicated environment setup with 3rd party dependencies.
Plugins available for Gradle, Maven and SBuild.
Freemarker, Groovy, Thymeleaf and Jade based templates & scripting support.
Easily integrate CSS frameworks such as Bootstrap and Foundation.
Add as much metadata to content as you like, also exposed to templates.
Store your site content in Dropbox, CVS, SVN, Git or whatever you want.