Single-file HTML tools you can open in any browser. No installs, no accounts, no friction — just open and use.
Collaborative P2P drawing canvas. Create a room, share the link, sketch together in real-time.
Peer-to-peer collaborative Markdown editor with live preview. Edit documents together in real-time.
Collaborative P2P slide deck editor. Drag-and-drop editing with charts, diagrams, and fullscreen presentation mode.
Radial mind map with markdown notes, cross-references, PNG round-trip, and live P2P collaboration.
Collaborative P2P Gantt chart builder with task groups, milestones, custom timelines, and PNG round-trip.
Pick colors, convert between formats, generate palettes, and check contrast accessibility.
Validate, format, and convert between JSON, YAML, TOML, and XML. Tree view, path copying, and comparison.
Spreadsheet-style editing for CSV and TSV files. Sort, filter, and transform tabular data.
Test and debug regular expressions with live matching, group highlights, and a quick-reference guide.
Compare two texts side by side with clear highlights showing every difference. Paste, compare, done.
Base64, URL encoding, hash generation, and other common text transformations in one place.
See everything your browser exposes: IP address, screen info, hardware, capabilities, timezone, and more.
Wall clock, countdown timer, stopwatch, and pomodoro — all in one tab.