Syncthing is an application which doesn’t want anything from the user. It doesn’t put ads into your face, it doesn’t want money from you or your data. It provides a tool with which you can share files in a trade-free manner. However, because of the fact that the website uses cloudflare which collects data (https://www.directory.trade-free.org/wp-content/uploads/2020/11/Pasted-11.jpg) I give 4 out of 5 blocks.