I've been selling Windows and Mac software online since 2005, so I remember them well. Tucows and similar sites were quite an important part of selling software online as an Indie back then. But they became less and less relevant as search engines improved. Eventually most of the download sites just became automatically generated online garbage heaps, trying to trick you into downloading things you didn't want, adding dodgy brower toolbar extensions and pushing fake awards ( https://successfulsoftware.net/2007/08/16/the-software-award... ). In some ways it is good that download sites are less relevant, but we have just swapped one lot of gatekeepers for another (mostly Google and Apple).