If you purchased after April 1st 2016, you can use our automated License Retrieval System. Enter your email address on that page and we'll deliver you your entire order history including license numbers and download links.
If you have previously purchased RapidWeaver on or before April 1st 2016 and have misplaced your serial number, you can request it to be resent to you by contacting FastSpring (our previous online store provider). Email FastSpring to retrieve your RapidWeaver serial number.
You can also use the "Recover License" option in the "Registration" window, found in both RapidWeaver and Squash. You just need to enter your email address and we'll automatically look up your license number and email it to you.