Some time ago I had to create a system which was able to save data on a client’s browser. Of course, the most simplest solution which came to my mind was cookies. But I needed a solution in which my data will be accessible for application opened in multiple tabs. I needed a better solution. Soon, I found specification of LocalStorage and IndexedDB, which is a part of HTML5 WebStorage specification. This amazing technology enables you to save data directly on the client’s browser and makes them accessible at any time from any place.