MongoDB

 MongoDB is an open source, document-based database management system that does not require a table schema description. MongoDB - classified as NoSQL and uses JSON-like documents and a database schema. If all four previous DBMSs are well known to most IT professionals, then few have heard of MongoDB. But she confidently takes the 5th line in almost all ratings. And as a result, in our ranking, she also occupies the 5th position.

Multiboot flash drive

 Multiboot flash drive


A multiboot flash drive is a regular flash drive on which various distributions of boot systems are recorded. These can be both operating systems and regular boot applications, such as antiviruses or some kind of rescue utilities.