WiiSCU by Wack0 (mod of IOS51+shop by tona) – powered by PatchMii. The application gives you the option to install new versions of channels and IOSes without touching the system menu.
Changes:
Fixes Shop Channel installation issues by getting v18 instead of just getting latest version
AEP-Emu (DE/EN)
DMG Page (DE)
Indie Retro News (EN)
Retroguru (EN)