From an email to TextWrangler users:
What you may not know is that last July, we released BBEdit 11.6. You can use this version unlicensed, forever, for free. Without a license, BBEdit now includes all of the features that TextWrangler offers, plus quite a few others. That’s right. You no longer have to pick between them.
If this sounds like TextWrangler will eventually be sunsetted, you’re right; it will. While the next version of macOS hasn’t even been announced yet, when it ships, TextWrangler won’t be updated for it—but BBEdit will.
If you’ve been using TextWrangler, like I have, it’s time to transition to BBEdit.