> Napster was software. Limewire was software.
No, they were companies, with infrastructure. Napster fully engaged in the sharing of copyrighted material, with their servers.
Limewire caved into a suit without ever finishing the trial, and shut down their company. The software still works fine.
Kodi requires no infrastructure, has no peer to peer functionality, and can only render video and music files to a television.
These were all lawsuits and not federal copyright criminal actions. Kodi can get sued, they can be totally destroyed by a lawsuit. That hurts the several individuals on the foundation board. It does nothing to stop the software, or its multiple forks, developed completely outside of that framework.
Limewire has long been discontinued
https://en.wikipedia.org/wiki/LimeWire
There is a open source fork called WireShare that still gets some updates. See https://sourceforge.net/projects/wireshare/
Also see http://www.gnutellaforums.com/limewire-wireshare-cross-platform/
However I'm not really sure what you'd find on that network to download nowadays.
Limewire was around until nearly the end of 2010 before a judge finally told them to stop offering downloads of the software. They had to pay ~$100 million to 13 different record labels. TBH, the whole process took way longer than I expected. Even when LW was shut down, there was Wireshare (Limewire Pirate Edition) which took the source and added LW Pro features like no adware, advertising, and removed backdoors entirely whilst removing the reliance and dependencies to Limewire servers. It should be at https://sourceforge.net/projects/wireshare/ IIRC.