Yes, TextExpander can import from Textpander and TypeIt4Me, as well as from SpellCatcher shorthand files (exported in XML format). TextExpander can also import comma-separated (CSV) and tab-separated (TSV) files, including those exported from Typinator.
- Choose File > Add Group from File… from the menu.
- Find the snippet file that you want to import as a snippet group.
- Click Open.