indexeddb2 billing software1 client-side web storage1 credit ledger1 cross-browser storage1 dark mode1 data storage1 database1 fridge.js1 html5 web storage1 inventory management1 javascript storage1 kirana store1 localforage1 localstorage1 multi language1 offline pos1 offline storage1 pdf invoice generator1 pwa admin panel1 react typescript1 shop management1 small business app1 storage1 tailwind css1 udhaar book1 web storage1 websql1