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.

Java




 Java is a strongly typed object-oriented programming language. Java code is usually translated into special bytecode, and can be executed on any computer architecture using the Java Virtual Machine.


There are a lot of Java application areas: web development, mobile application development, and, of course, desktop application development.


According to the TIOBE index, the Java programming language has been in the lead for quite some time. In other ratings, Java is no less popular, for example, in the IEEE Spectrum and PYPL ratings, Java is in second place.