IDE integration
Most of the hardcore developers never want to leave their IDE. Not just for coding, but for building, deploying, testing, and for everything if possible - they would happily do these from the IDE itself. Most of the popular IDEs support Maven integration, and they have developed their own plugins to support Maven.
NetBeans integration
NetBeans 6.7 or newer ships with in-built Maven integration, while NetBeans 7.0 has newer versions that bundle a complete copy of Maven 3 and runs it for builds just like you would from the command line. For version 6.9 or older, you have to download a Maven build and configure the IDE to run this. More information corresponding to Maven and NetBeans integration is available at http://wiki.netbeans.org/MavenBestPractices.
IntelliJ IDEA integration
IntelliJ IDEA has inbuilt support for Maven; hence, you don't need to perform any additional steps to install it. More information corresponding to Maven and IntelliJ IDEA integration is available at http://wiki.jetbrains.net/intellij/Creating_and_importing_Maven_projects.
Eclipse integration
The M2Eclipse project provides first class Maven support through the Eclipse IDE. More information corresponding to Maven and the Eclipse integration is available at https://www.eclipse.org/m2e/.
Note
The book Maven for Eclipse, published by Packt Publishing, discusses in detail Maven and Eclipse integration at https://www.packtpub.com/application-development/maven-eclipse.