A curated collection of zero-dependency, local-first, single-file HTML tools, productivity widgets, and platform frameworks designed for digital sovereignty, total privacy, and ultimate portability.

Single-file HTML tools run natively in any modern browser—requiring no server setup, no npm install, no complex build pipelines, and zero telemetry. Just double-click, inspect, edit, and maintain full ownership of your software and data.

• Local-First & Offline-Ready: Your data remains on your physical device. No hidden network requests.
• Zero External Dependencies: Everything needed (HTML, CSS, JavaScript) lives within a single file.
• Intellectual Sovereignty: Pure software you can inspect, modify, fork, and preserve indefinitely.
• Citizen Developer Friendly: Highly readable, hackable code that can be customized in any standard text editor.

🌐 Explore the ecosystem showcase at Crystal World Project Homepage.

• Featured Anchor Project
• Knowledge Management & PKM
• Utilities & Productivity
• Media, Graphics & Creation
• Developer Tools & API Clients
• Contribution Guidelines
• License

An ultra-lightweight, zero-dependency, single-file HTML personal wiki & knowledge management tool inspired by TiddlyWiki.

• Key Features:
  • Embedded multi-tag AND query filtering engine (Array.every).
  • Seamless Edit/View markdown parsing interface.
  • Safe inter-iframe communication protocol via postMessage.
  • Self-contained JSON storage ready for multi-dimensional knowledge matrix integration.
• Organization: crystal-world-project

• TiddlyWiki Classic / Standalone - The legendary single-file non-linear personal web notebook and pioneer of the single-file paradigm.
• Teddy Wiki - A standalone in-memory single-file HTML wiki & personal knowledge base system.
• Teddy Wiki Lite - Compact, single-file HTML markdown wiki with multi-tag query capabilities.
• (Additional single-file outliners, journaling templates, and flashcard tools welcome)

• (Single-file Kanban boards)
• (Local Pomodoro timers & Habit trackers)
• (Offline calculators & decision matrix engines)

• Bento Slides - An open-source, local-first presentation tool packed into a single HTML file containing the deck, editor, presenter mode, and interactive charts.
• Nano Blake - A single-file HTML slideshow & video memo engine featuring smooth Ken Burns animation effects and Web Speech API audio integration.
• (Single-file SVG/Canvas drawing canvases & image editors)

• Crystal Dock - An ultra-lightweight single-file modular meta-platform using iframe sandboxing and postMessage protocol to connect isolated web tools without build steps.
• (In-browser RegEx testers & HTML sandboxes)
• (Single-file REST API clients & GitHub API GUI managers)
• (JSON formatters & offline base64 / token encoders)

We warmly welcome submissions of single-file tools and apps! To be listed, a tool must satisfy the following criteria:

1. Single File Structure: Entire application logic (HTML, CSS, JavaScript) must reside within one standalone .html file.
2. Local-First: Complete functionality must be preserved offline without requiring external servers or APIs (except optional user-configured tokens).
3. Zero Critical CDNs: No dynamic external script fetching that degrades functionality if offline.
4. Data Privacy: No background analytics, tracking, or telemetry.

- **[Tool Name](https://link-to-tool.com)** - Brief one-sentence summary describing its purpose and features.### 📄 License
Distributed under the MIT License. See `LICENSE` for details.  
Created & Maintained with passion by **[Crystal World Project](https://github.com/crystal-world-project)**.