Self-hosted
Quiki is an Outstanding Wiki system written in Go
Quiki is a file-based web engine and server featuring a productive source language, markdown, image generation, categories, templates, and revision tracking
markdown
Open-source
revealJS is an open-source presentation framework
reveal.js is an open source HTML presentation framework. It enables anyone with a web browser to create beautiful presentations for free. Presentations made with reveal.js are built on open web technologies. That means anything you can do on the web, you can do in your presentation. Change styles
Self-hosted
Dillinger is a web-based feature-rich Markdown editor
Dillinger is a cloud-enabled, mobile-ready, offline-storage compatible, AngularJS-powered HTML5 Markdown editor. If you are using Sandstorm ecosystem, you can install Dillinger with one click. Features * Import an HTML file and watch it magically convert to Markdown * Split-pane * Drag and drop images (requires your Dropbox account be linked) * Import and save