The Laws of Form plugin enhances Obsidian by converting linear bracket expressions based on the Laws of Form into visually intuitive two-dimensional graphical representations. Users can create and customize these expressions using dedicated code blocks, with support for styling through inline CSS. The plugin facilitates drawing distinctions, handling nested expressions, and rendering re-entries while accommodating limitations in HTML/CSS rendering. Ideal for those familiar with Laws of Form concepts, this tool provides an advanced way to explore and present these formal structures in Obsidian.

The Sigma plugin is designed for users who need to perform calculations directly within Obsidian. With support for a wide variety of mathematical expressions, the plugin allows users to conduct complex operations, such as financial planning, tracking expenses, or conversions, within their notes. It includes features like hierarchical calculations, variable assignment, scientific functions, and customizable output formatting. The plugin also supports token simulation, automatic block-level totals, and exporting results in clean HTML tables. It's ideal for users who want a powerful calculation tool embedded in their note-taking workflow.