Billing should not depend on the internet.
Billyng is GST billing software for Indian shops, built around one idea: the counter never waits.
Why offline first
Most billing software keeps your shop on someone else's server, so a power cut or a dropped connection stops the counter. Billyng keeps your shop on your own computer. You sign in, bill, check stock and update a customer's khata with no connection at all, and your work backs up to your account when the connection comes back.
Built for how Indian shops sell
GST, worked out per line from each product's own rate and the two state codes. Invoice numbers that never skip or repeat. A khata for credit customers, in the words a shop already uses — you gave, you got. Several GST registrations under one login.
Your data is yours
Every bill lives on your machine first. No account can reach another's data, and sign-in can be protected with a second factor. If you ever need your data out, the API and exports are there on the plans that include them.