CyberChef is an incredibly powerful, web-based tool for analyzing and transforming data — think encoding, decoding, encryption, hashing, regex, data format conversions, and much more.

The developers call it a "Cyber Swiss Army Knife" useful for developers, sysadmins, and security professionals alike, a little like IT-Tools, but way more useful to me.

I’ve already created a working Cloudron package for it and would be happy to hand it off to the Cloudron team or community to maintain and improve.

P.S. I love that it replaces so many third party utility sites where you have to upload data to untrusted sources:

• encode/decode in Base64, URL, HTML, JWT, etc.
• text manipulation and cleanup — convert case, trim lines, remove duplicates, extract patterns (replaces online text cleaner tools)
• convert between and pretty-print JSON, XML, CSV, YAML — replaces format conversion or code formatter tools
• regex testing with live results — replaces regex101 for most typical use cases
• date and time conversion (Unix timestamp to human-readable) — no need for epoch converter websites
• this is in addition to a lot of powerful infosec and data analysis tools