Open-source software

This project exists thanks to open-source software. Here are the main libraries we depend on, their licenses and what we use them for.

Licensing approach

We prefer permissive licenses (MIT, Apache-2.0, BSD, ISC). CyberChef (Apache-2.0) inspires many operations and we re-implement them behind our own adapter layer. IT-Tools (GPL-3.0) is used only as a feature and UX reference and none of its code is copied.

Library	Version	License	Used for
CyberChef	reference only (re-implemented, not bundled)	Apache-2.0	Inspiration and reference for the behaviour of many encoding and transformation operations. Selected operations are independently re-implemented; no CyberChef code is bundled.
IT-Tools	inspiration only (no code used)	GPL-3.0	Feature and UX inspiration only. No source code was copied or adapted.
next	16.3.6	MIT	React framework used for routing, static generation and the production build.
react	19.3.0	MIT	User-interface library for every page and tool.
tailwindcss	4.3.3	MIT	Utility-first CSS framework used for styling.
uuid	14.0.2	MIT	Generating and validating UUIDs.
jsonrepair	3.15.0	ISC	Repairing invalid or loosely formatted JSON.
jwt-decode	4.0.0	MIT	Decoding JWT headers and payloads (signatures are not verified).
validator	13.15.35	MIT	String validators for emails, URLs, IP addresses, UUIDs and similar formats.
diff (jsdiff)	9.0.0	BSD-3-Clause	Computing text differences for the diff tools.
papaparse	5.7.0	MIT	Parsing and generating CSV data.
SheetJS CE (xlsx)	0.20.3	Apache-2.0	Reading and writing Excel workbooks.
@zip.js/zip.js	2.18.2	BSD-3-Clause	Creating and inspecting ZIP archives in the browser.
marked	18.0.14	MIT	Rendering Markdown to HTML.
DOMPurify	3.4.16	MPL-2.0 OR Apache-2.0	Sanitizing rendered HTML before it is displayed.
mermaid	12.0.0	MIT	Rendering Mermaid diagrams to SVG.
yaml	2.9.1	ISC	Parsing and stringifying YAML.
fast-xml-parser	5.11.1	MIT	Parsing, validating and building XML.
hash-wasm	4.12.0	MIT	Fast hash and checksum algorithms (MD5, SHA family, CRC and more) compiled to WebAssembly.
turndown	7.2.4	MIT	Converting HTML to Markdown.
punycode	2.3.1	MIT	Converting internationalized domain names to and from Punycode.
js-beautify	2.0.3	MIT	Formatting HTML, CSS and JavaScript.
html-minifier-terser	7.2.0	MIT	Minifying HTML.
lucide-react	1.48.0	ISC	Icon set used across the interface.