Not a software issue.
Most such applications have some sort of "do not disturb" or "silencing" function. I.e., "Out of the office" response when you not available while busy or otherwise wish not to be interrupted.
If you have control of the applications just stop them from automatically launching at boot time.
Move them to desktop icons (shortcuts) that you can open or close at will.
Turn off the speakers, webcams, and mic's.
If necessary get assistance from your IT folks to reconfigure your computer.
Actually a people issue.
Let your boss and colleagues know about the "costly" effect of interruptions and how you feel about the matter.
Otherwise your colleagues may just become more interruptive by walking to your office or...