System for managing the trade of an online store

Question

CRM

Good day!

There is an online store that brings a small but stable income.
Please tell me some simple system for managing the trade of an online store. To have purchases, sales and reports on the whole case. It is desirable that all this economy was free and could work through the web.
And then I got tired of writing everything in the googledocs table :(

Answer 1

moysklad, megaplan ... look at free rates.