attempts to support both linux and windows for cross-platform development were made, and a cross-platform alternative to the vcl known as clx shipped in 2001 with the release of delphi 6. this was the second product in borland's series of linux-compatible native developer tools, establishing code-compatible ides for both linux (see kylix above) and windows (delphi 6) using the shared clx component framework for both. later efforts would include clx in c++builder 6 and add c++ code-compatibility to the rad tools line. delphi 6 included the same clx version (clx 1) as the first version of kylix. clx 1 had been created before delphi 6; its feature set was based on vcl 5 and lacked some features added to the vcl 6 shipped with delphi 6.