GoKawiilTeXbrain lets users compile LaTeX to PDF entirely in the browser via WebAssembly
A developer released TeXbrain, a free open-source LaTeX editor that runs a WebAssembly port of pdfTeX (via SwiftLaTeX) so documents compile to PDF directly in the browser with no server involved. It also supports opening local project folders, syncing with git, and pushing to GitHub, all within a single browser tab. Packages beyond the common ones bundled with the app are fetched on demand from a TeX Live mirror and cached for offline reuse.