This is "JianPu" or "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". Simp-Erhu is another free tool, but it requires MS Word.

There's also a comparison of four free Jianpu notation tools 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.

This is "JianPu" or "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". Simp-Erhu is another free tool, but it requires MS Word.

There's also a comparison of four free Jianpu notation tools online. It compares S-Music, Simp-Erhu, "MUPA" and "MeiDeLi". Since i don't know mandarin, i can't provide a link for the latter two. Some more information is available in this musescore form thread.