1. MavenhelperIntelliJ plugin - https://plugins.jetbrains.com/plugin/7179
3. EclipsecodeformatterIntelliJ plugin - Allows using Eclipse's code formatter directly from IntelliJ. https://plugins.jetbrains.com/plugin/6546-eclipse-code-formatter
4. GrepconsoleIntelliJ plugin - https://plugins.jetbrains.com/plugin/7125
5. EditorGroupsIntelliJ plugin prototype of https://youtrack.jetbrains.com/issue/IDEA-12130#comment=27-2838171
6. krasa-jaxb-toolsXJC / JAXB plugin for generation of Bean Validation Annotations (JSR-303) and replacing primitive types
7. IdeaIconPackUX friendly old colorful icons for IntelliJ 2018.2+ solving https://youtrack.jetbrains.com/issue/IDEA-192025