I have been using iText 5 or 7 without a commercial license but never open sourced my application. What should I do?

Legally, your usage falls under the terms of the AGPL license if you haven’t purchased a commercial license but you’ve been using the iText SDK. We can work with you to help bring you into compliance. It may be possible for us to issue you a back-dated commercial license to protect you from the AGPL license requirement to open source your entire business application. Contact iText sales for additional information.