This is the trial version of myTunesPlaylistExporter which is limited to 20 tracks per playlist, for the full version, please visit
https://www.microsoft.com/en-us/p/mytunesplaylistexporter/9n8fvzb7nxvw
(search the store for "myTunesPlaylistExporter")
When owning the trial version, the full version is available at a reduced price.
myTunesPlaylistExporter analyses your iTunes library and allows you to export your playlists either to text files of various formats (CSV, M3U, extended M3U, PLS. WPL and Excel XML) or - and that's the main thing - directly to your Spotify account. If a track cannot be mapped or found on Spotify, you're able to search and map manually.
Featuring lots of options for both types of export.