Silver Bullet is highly-extensible, open source personal knowledge management software. Indeed, that’s fancy language for “a note taking app with links.”

At its core, SB is a Markdown editor that stores pages (notes) as plain markdown files in a folder referred to as a space. Pages can be cross-linked using the [[link to other page]] syntax. However, once you leverage its various extensions (called plugs) it can feel more like a knowledge platform, allowing you to annotate, combine and query your accumulated knowledge in creative ways, specific to you.