Linux support is often requested in HN comments (but not so much from other users). I'll be sure to post to HN if/when I add it! Printing to DYMO via CUPS should work on macOS/Windows. I just added MDNS/IPP support so anything being "shared" as a network-discoverable printer should automatically display in the in-app printer list. Let me know via the app website if you run into any issues. I'm happy to help!
