These appear to be library files for BasicScript for Windows. BasicScript is a scripting language that is integrated into packaged applications by our customers, who develop the software that includes the BasicScript DLLs as part of their own product.
The first three letters -- 'cls' -- are used to identify which of our customers has a license to redistribute the BasicScript libaries. We'll do some research tomorrow when our office is open again (we are on Eastern time) and make an additional post to this forum.
If you could send your contact information to me privately via email (my address is billf@summsoft.com), that would enable us to contact you directly. This may prove useful if we require additional information from you about the DLLs you mention above.
Best regards,
Bill Fisher
President, Summit Software Company