There isn’t many great POS plugin for WordPress. You’d find a lot made for Laravel or others. For my use case, VitePOS is an excellent contender for a POS plugin in the market. Very well made, well coded too. It works offline, with a built-in cache system, so it works well as a real POS at the cashier. It supports multiple physical stores, thermal printers, and more. It also works well natively and syncs with WooCommerce, which is awesome.

The developers behind VitePOS are very responsive and friendly. With Pro version, it’s even more powerful, and I hope there will be more customization options and integrations in the future.