zoffline Windows only standalone executable for Zwift 1.0.101236.
Pace partners are no longer bundled in the executable, you can get them from https://github.com/zoffline/zwift-offline/archive/refs/heads/master.zip (place the pace_partners folder in the same folder as the zoffline exe).
Note: The executable is made with pyinstaller. An unfortunate side effect is that some anti-virus software may falsely flag pyinstaller executables as malware. This is a known issue (https://github.com/pyinstaller/pyinstaller/issues?utf8=%E2%9C%93&q=is%3Aissue+virus) and unavoidable. If you prefer, you can not use this exe and instead run zoffline directly from the source code (2nd installation method in the README).