I know there are other save manager apps out there, but I only realised this after I had written one of my own. So I'm not intending to tread on anyone’s toes, but I thought I'd share my take on a save manager for TSW that works OK for me. It detects all versions of TSW that you have installed (tested with TSW 3 to 6, and may work with 7), and allows you to save and restore multiple save files for each version. Feel free to try it, or ignore it, but any feedback constructive or otherwise is welcome. If you have any problems with it please let me know as I've only tested it on my own installations. Download from github here: https://github.com/FenderBender2/TSW-Save-File-Manager
I've released an updated version of the manager (1.1.0) which includes folders. You can now group your save files in folders that you create. These appear as tabs above the custom file list. I hope you like it.
Version 1.2.0 is now available for download. This version supports multiple profiles. If you have more than one profile configured in your TSW, you can select the profile for which you want to manage the save games files. You can also move save files between profiles. Please let me know on this thread if you encounter any problems or have any questions about this release. Download the app from the github link in the OP, but please also read the release notes as this contains important information if you are already using one of the old versions of the manager app.