https://tide.com/en-us/how-to-wash-clothes/how-to-do-laundry/how-to-read-laundry-symbols

At the bottom of the page you find a PDF cheatsheet too.

It’s on giveaway on Steam too: https://store.steampowered.com/app/286690/Metro_2033_Redux/

Odoo is the best alternative out there. It is developed by a Belgian company, but it is entirely Open Source and allows you to self-host it in order to completely own your data and avoid having to depend on a provider, even if European.