You can source the Limewire versions indirectly via the forum if you select the OS (Operating System) section that matches your OS under the LimeWire section of the forum here or installers for Windows here. Alternatively you can find versions at sites such as Oldversions.

WireShare is Limewire pirate edition that's been updated to fix several bugs and make improvements. So you are best to go for WireShare.
If you would prefer the older LimeWire 4 versions then you will also find links to those to download on this forum as mentioned above.