The only touchpad gestures I use are those to simulate the mouse:

• One-finger tap simulates left click.
  
• Two-finger tap simulates middle click.
  
• Three-finger tap simulates right click.
  
• Two-finger scroll simulates both vertical and horizontal scrolling.
  
• One-finger scroll after a one-finger double tap simulates drag-and-drop.
  

These are the commands I use to set this on OpenBSD:

Unfortunately, I don't think there is a way to set proper gestures on OpenBSD (that is, binding gestures to commands). I thought on setting hot-corners (which are not touchpad gestures, but a mouse thing) to open the desktop menu, but then I remembered that I use multi monitors, so there is no way to the pointer be stopped by barriers on the corner of the monitor.