Ableton Live
Use Create → Import MIDI File…, or drag the .mid file from Live’s browser or your file manager onto a MIDI track. If you import in Arrangement View, Live places it at the insert marker; in Session View, it goes into the selected clip slot.
Add an instrument to the MIDI track. A MIDI file does not contain audio, so an empty track can show notes without making sound.
FL Studio
Use the MIDI import command from the main File menu or a Piano roll menu. You can also drag the file from the Browser onto the Piano roll or Channel Rack.
Use the .mid extension for the file. Choose the import tracks and channels you need, then assign an instrument to hear the notes.
Logic Pro
Choose File → Import → MIDI File, or drag the file from the All Files Browser or Finder into the Tracks area. The drop position determines where the first imported material starts.
Logic can open Standard MIDI files, then you can assign the imported track to a software instrument and edit the regions.