It takes a bit more than one screenshot for me to think "unmaintained", like one click to the Support page and another click for details on a bullet item takes me to https://franz.com/support/apple_silicon.lhtml and I'm at least assuaged that it isn't abandonware even though I'm not an Apple user. But in any case I still get a bad feeling from the ancient images and sympathize with similar negative reactions, whatever they are in detail; for you it's a sense of being unmaintained and for me it's a sense that they don't care very much about the product and aren't interested in attracting new customers. And this is just from the window chrome, looking at what the screenshots actually depict produces another set of emotions that I don't think anyone at either company cares about exploring. At least LispWorks' has syntax highlighting... (In case any employee happens to catch this, take a look at https://www.jetbrains.com/idea/ and compare.)