Database Integration
Meteor works with MongoDB by default. MongoDB package will be automatically included when you create a new meteor project. So it’s easy to get started with MongoDB. Also you can simply run MongoDB shell with a simple command(Meteor mongo). Therefore no need to connect database manually. It helps you to focus on code. Meteor provides Minimongo package which is client side version of MongoDB. It helps to store needed information on client side.
Blaze Front-end framework
Blaze is meteor’s default reactive rendering library. But blaze must not required to build application you can simply use angular or react to develop your UI. Blaze.js templates are written in space-bars and templates are complied into JavaScript ui components that are rendered by blaze library.
Live reload
Live reload is another coolest feature in meteor. Once you done the changes on front-end it will automatically reloaded on the live. Live reloading allows to reload only the required DOM rather than reloading the entire web page.
As a beginner of the meteor.js i have had these coolest features in meteor. not only these, there are more features available in meteor so try it yourself and have those features.