DelphiStyles.com sells custom VCL and FireMonkey Styles. They are offering a free custom VCL Windows Style for RAD Studio 10.2 Tokyo customers through the GetIt Package Manager (Tools > GetIt Package Manager).

Chilkat Software Inc., established in 1998, is a software company based in Chicago, Illinois. It develops, markets, and sells software components and libraries that are trusted and used by thousands of companies and organizations worldwide.