I’ve worked at companies where the installation of such tools was discouraged. I’ve also known companies where the installation of tools is mandatory. While some companies feel it is a security risk to have the tools installed for other companies it is a security risk to allow for remote access. There are also some folks that just can’t be a DBA without a GUI. It would seem that there is no right answer, just a big old “it depends”.
I'm going to lump both native tools and 3rd party tools into this poll. So, if either one is allowed, let your answer reflect that. I'm very curious to know how many people are not installing tools on the database servers and instead are using remote management.