Bludit - Bludit is a web application to build your own website or blog in seconds, it's completely free and open source. Markdown support.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Grav - The modern open source flat-file CMS
Snagit - Screen Capture Software for Windows and Mac
HTMLy - HTMLy is an open source databaseless blogging platform. A Flat-File Blog and Flat-File CMS written in PHP prioritizes simplicity and speed.
LightShot - The fastest way to take a customizable screenshot.