price: free platforms: Vic20,C64
Relatively fast, limited instruction set, integer-only basic interpreter for Commodore 64 and Commodore VIC 20
Partially compatible with CBM BASIC V2, but there are quite a few restrictions.
Use the standard CBM BASIC editor to edit (and even test) your programmes. To run using BB, call up the bunny with some SYS magic. The manual contains full details.