zoffline Windows only standalone executable for Zwift 1.0.150097.
This update requires Zwift Launcher 1.1.14 which replaces Zwift's cacert.pem. You will need to re-append cert-zwift-com.pem to Zwift's cacert.pem.
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).