Hi Lenny. So I did some snooping and hopefully this will answer your questions.
There actually is a snapping tool in the MIDI editor. Just make sure that's on. So first go to Options > Snap Settings > Snap notes/cc to grid. Then use the option of Always snap notes to the left. But the default grid is set to 16th notes. So they will only snap to the nearest 16th note. If you want it to snap to 8th or quarter notes, change the grid on the bottom left part of the MIDI Editor. It's easy. It just says 'Grid' with a dropdown menu where you can change from 1/16 to 1/8 or 1/4, whatever.
Free Mac Cursors
For making all the notes the same length, right-mouse click and drag over the notes, which will select them all. Then select Event Properties in the menu that comes up. Make sure 'Type' says 'Notes' and put the note length in the 'Length' window. They default to using a decimal number system:
0.1.00 is a quarter note
0.0.50 is an eighth note
0.0.25 is a 6th note
0.0.13 is a 32nd note
But you can just put in 1/4 for quarter notes, 1/8 for 8th notes, 1 for whole notes, etc. Then all the notes you have selected will change to that length. That should do what you want. Hope that helps!
Small Mac Cursor
I've discovered another utility (released via the Mac App Store just today!) that seems to provide the exact functionality as Windows Snap. It's called Moom ($5), and it adds an iOS-style popover to the green Maximize button in Mac windows. The popover has buttons that let you do the following. Instead, if you want to snap the mouse cursor or pointer as well in the screen shot, you’ll use a slightly different screenshot method. By using the Grab utility, which is part of all Mac OS X installations, you can take screen shots showing the mouse pointer, and it’s even somewhat customizable in that you can set it to display different. Method Two: Mac Snap Windows via Mission Control. Enter Mission Control from Launchpad or by pressing F3 on the Mac keyboard. Drag any app or window to the top of the screen. Drag and drop another app or window into the same space as earlier, then the two apps. Just make sure that's on. So first go to Options Snap Settings Snap notes/cc to grid. Then use the option of Always snap notes to the left. But the default grid is set to 16th notes. So they will only snap to the nearest 16th note. If you want it to snap to 8th or quarter notes, change the grid on the bottom left part of the MIDI Editor. Snap-To automates this little wrist jerk, moving the cursor automatically to its most likely destination - the default button. Many sufferers of repetitive stress injuries (RSI) and carpal tunnel.