This is ["**JianPu**" or "**numbered musical notation**"](http://en.wikipedia.org/wiki/Numbered_musical_notation). Wikipedia on Jianpu mentions some software tools, but most of them seem to require knowledge of chinese (since that notation system is mostly used in china). A (quite old but free) tool is "[S-Music][1]". [Simp-Erhu][2] is another free tool, but  it requires MS Word.

There's also a [comparison of four free Jianpu notation tools][3] online. It compares S-Music, Simp-Erhu, "MUPA" and "Medeli". Since i don't know mandarin, i can't provide a link for the latter two.


  [1]: http://www.a1soft.com/smusic/index.htm
  [2]: http://simperhu.weebly.com/
  [3]: http://jianpu.starising.com/jianpu-notation-software.php