I'm with bsiege: I'm looking to replace CZ.NIC Labs' excellent DNSSEC/TLSA Validator. (In use since 2.2.0.3, Nov. 2016, currently 2.2.0.4 in use with Cyberfox x64 52.6.1 portable under Windows 7 and Quad9 DNS.) DNSSEC *and* TLSA validation.

Rating: five stars for proof of concept; minus three for google.

In Mozilla's quest to make its browser more "secure," it disabled the ability to run extensions to make sure it's doing so and the ones to force it to do so if needed.

I'll be revisiting this page to check on your progress. Thanks for your efforts with hopes for success.