GoChords is an easy way to create chordsheets for songs. But first you have to register. It's free, so don't mind. After that you can start with a new song. Just copy the lyrics from wherever you want and paste it into the screen. After that you can select the chords and put them into the correct place. Select font and size, and size of chord boxes and there you go. It's as easy as that.
Supported instruments are so far: guitar, different Ukuleles and Mandolin. No bouzouki so far. But don't mind. You can create your own chords. What I did is, I selected mandolin and defined my own chords for this instrument. So I select mandolin and custom chords and I can use my own chords. That's ok for me. I hope they will support bouzouki in the future as well.
Try it, I think you will like it.
Now they offer a tablet version, too, but it's 5€ per month. In my opinion that's definitely too much. But everyone may decide for themselves. I think the free online version is ok.