I started building Nomo to give people who enjoy Typora-style editing another free, open-source option. Switch between WYSIWYG editing and Markdown source mode. It supports headings, lists, tables, code blocks, math formulas, Mermaid diagrams, and quick insertion tools. Nomo is still evolving. Share issues, suggestions, or feature requests in comments or on GitHub: https://github.com/nomo-md/nomo
