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SilverBullet

What it is

SilverBullet is an open-source, extensible, Markdown-based personal knowledge management system that runs in the browser.

What problem it solves

It combines the simplicity of Markdown with the power of a programmable environment, allowing for live queries and custom templates.

Where it fits in the stack

Category: Tool / Knowledge Management

Typical use cases

  • Creating a programmable wiki.
  • Automating note-taking with templates and queries.
  • Managing personal data in a text-based format.

Strengths

  • Runs in the browser but stores data locally or on a server.
  • Built-in query language for Markdown blocks.
  • PWA support for mobile use.

Limitations

  • Requires a server component for full functionality.
  • Smaller ecosystem compared to Obsidian or Logseq.

When to use it

  • When you want a "hacker-friendly" knowledge base that you can program and extend.

When not to use it

  • If you want a polished, out-of-the-box consumer app.

Licensing and cost

  • Open Source: Yes (MIT)
  • Cost: Free
  • Self-hostable: Yes

Sources / References

Contribution Metadata

  • Last reviewed: 2026-04-27
  • Confidence: high