About Shoshin Tools

Shoshin Tools is a collection of free, no-clutter utilities: developer tools like a JSON formatter and regex tester, and financial calculators for salary, tax, mortgages, and investing. "Shoshin" (初心) means beginner's mind — tools should be obvious the first time you use them.

Every tool runs entirely in your browser. There are no accounts, no uploads, and nothing you type ever reaches a server. The site is a static page — that's the whole trick.

Built and maintained by Shoshin Systems. Questions or tool requests: replayhubunlimited@gmail.com.