On Intellij, JetBrains are producing themselves snap packages for their whole range of products.
It makes it so easy to install on your system, and updates happen automatically.
Here is their initial announcement, https://blog.jetbrains.com/idea/2017/11/install-intellij-ide...
Here is the snap package page for Intellij Ultimate, https://snapcraft.io/intellij-idea-ultimate You can see the usage stats and also the list of other JetBrains packages.