Hello there,
I am the developer of MuWire, an anonymous file-sharing application inspired by LimeWire (I used to work for LimeWire LLC btw). MuWire uses the I2P network to hide the ip addresses of its users. Other than that it's a lot like the LimeWire 4.x series.
You can download Windows and Mac bundles at
https://muwire.com
If you want to build from source, it's available at
https://github.com/zlatinb/muwire
If you want to learn more about how MuWire achieves anonymity, visit the I2P website at
https://geti2p.net
Enjoy!
zlatinb