Update: the Toolbox now needs the jetbrainsd daemon to connect to your JetBrains account. Without it, your browser won’t transmit the authentication information to the Toolbox.
If you use JetBrains Toolbox to install and update your IDEs, the latest version of Toolbox (3.3.0.74186) has introduced a new background service (daemon). It’s enabled by default and it does one thing: it handles jetbrains:// URIs.
If you don’t know what a jetbrains:// URI is or if you have never used it, you may want to disable this service and save about ~30MB of memory:

Nota: on Linux, it also creates some garbage in /tmp. This can be a problem if /tmp is mounted in memory and you don’t have a lot of memory, per example when you’re using a VM.
Feel free to upvote TBX-18021.