Wiimmfi

Wiimmfi is a homebrew online multiplayer service created for the Wii and Nintendo DS consoles by Wiimm and Leseratte as replacement for the now-defunct Nintendo Wi-Fi Connection service in May 10, 2014 worldwide, hence the name Wiimmfi.

Initially, the development of Wiimmfi started in November 2012 by a single person, Wiimm, also with the main goal being to detect online hackers. Leseratte came along with Wiimm to help developing the online service after being involved in the mkw-ana (a tool that helps analyze the network traffic of Mario Kart Wii) development.

Why It Rocks

 * 1) First and foremost, it brings online multiplayer on Wii and Nintendo DS games back to life, most importantly Mario Kart Wii, allowing players to continue playing online games after the discontinuation of the original online service.
 * 2) The ping rate isn't too bad.
 * 3) Speaking of the low ping rate, it can be the case for all regions, which is very impressive for a homebrew online service. Yes, it's available for all Wii regions!
 * 4) It is incredibly easy to access. There is no need to homebrew your Wii console, it just requires specific DNS addresses to be used to trigger a patcher.
 * 5) Speaking of accessing the service, it can also be used on a real Wii console. And since it's easy to find used Wii consoles on eBay at around $40, and a copy of Mario Kart Wii for only $15, it adds to a major factor for that quality.
 * 6) It's completely free too!
 * 7) Since it was released 10 days earlier from the discontinuation of the NWFC, this would mean that players could immediately use Wiimmfi after the closure of the former.
 * 8) It's yet still running even after being out for almost 7 years as of now.

Bad Qualities

 * 1) Not all online games support Wiimmfi, though, mostly because some of them are pretty obscure to this day. For a list of tested games using Wiimmfi, click here.
 * 2) The Wiimmfi patcher takes long to load, and what makes it worse is that you have to run it every single time you want to boot a game to use its online multiplayer mode.