To use RDP Gate on MAC OS, you’ll need to install Homebrew.
Homebrew is a package manager for opensource projects.
After install homebrew, follow this instructions:
1 - Install xquartz’s packages
brew install xquartz
2 - Install freeRDP’s packages
brew install freerdp
3 - Run freeRDP with the following arguments
xfreerdp /size:1900x1000 /v:<IP_senhasegura>:3389/relax-order-checks +glyph-cache +bitmap-cache
for the window open in, for example, 1900x1000.
Or
xfreerdp /f /v:<IP_senhasegura>:3389/relax-order-checks +glyph-cache +bitmap-cache
for the window open in fullscreen.