According to Meteor official documentation −

Meteor is a full-stack JavaScript platform for developing modern web and mobile applications. Meteor includes a key set of technologies for building connected-client reactive applications, a build tool, and a curated set of packages from the Node.js and general JavaScript community.

Features

• Web and Mobile − Meteor offers a platform for developing Web, Android and IOS apps.

• Universal Apps − The same code for web browsers and mobile devices.

• Packages − Huge number of packages that are easy to install and use.

• Meteor Galaxy − Cloud service for Meteor app deployment.

Advantages

• Developers only need JavaScript for server and client side development.
• Coding is very simple and beginner friendly.
• Meteor apps are real time by default.
• Official and community packages are huge time saver.

Limitations

• Meteor isn”t very suitable for large and complex applications.

• There is a lot of magic going on when working with Meteor, so developers might find themselves limited in some way.