I have archived the QuickBASIC 4.5 compiler here: https://github.com/susam/dosage/tree/master/langs/qb45
The above archive is obtained from here: https://www.qbasic.net/en/qbasic-downloads/compiler/qbasic-c...
- The BRUN45.EXE file in QB_4_5_E.ZIP is the German version one whereas the other files in this ZIP are the English version ones.
- The original directory layout of QuickBasic 4.5 (INC/, HLP/, LIB/) is missing although all the important content from those directories are preserved in the top-level directory.
- The content of the INC/EXAMPLES/ directory is missing too.
The original distribution is much better preserved at the www.qbasic.net URL I shared earlier. It also contains the English version of QBasic 1.1 interpreter.