The settings is Preferences -> Profiles -> Window and then select "No Title Bar" in the drop-down for style.
I really wish we could disable all the title bars.
same...
almost certainly iTerm. You can config an iTerm profile to have borderless windows in recent-ish versions.
Oh, interesting... I just looked for it, and I found that there are patched versions of iTerm that are borderless; is there actually a way to configure standard iTerm in this way? that'd be great.
Yup. Preferences > Profiles > [your profile] > Window > Style > No Title Bar
Awesome, thanks! I just upgraded and it works great.