Since they've been requested in the Forums, I'm uploading my 106% save files for both Switch and Wii U, including instructions on how to use them for each console. 

106% Saves for Switch & Wii U

A tool that enables a player to continuously practice Bandage Gets without save deletion.

Bandage Resetter

Allows to play with the whole set of characters in the last two worlds
https://www.youtube.com/watch?v=vg9VX-fmBUc

Character Unlocker

What this program does is simply scan your computer for the savegame.dat file and delete it without the need of confirmation, or having to open a folder. In addition, there is another button that will Launch your Super Meat Boy without having to navigate through the taskbar Steam Menu and selecting Super Meat Boy.

Control Station

View the video for a quick tutorial on how to use it and what it does. http://youtu.be/z51SUiwe02s

IL tool

Individual saves for the start of each light chapter

JoyToKey (or Joy2Key) enables PC game controllers to emulate a mouse and the keyboard input, so that windows applications and web games can be controlled with your favorite joysticks! Whenever joystick buttons and sticks are pressed, JoyToKey converts them into keyboard strokes and/or mouse movements so that the targeted application will work as if you are using a real keyboard and a mouse!

JoyToKey

Allows controller inputs to be bound to keyboard. Necessary for dual jump on keyboard.

KeyboardToControllerMapper

These can be accessed at any time using the editor / devmode.

List of levels

NohBoard

View the video for a quick tutorial on how to use and what it does.
https://www.youtube.com/watch?v=hDgZgUdlk48

Practice Program

This will help the game run more consistently on your pc. 'consistently', in this case, means fewer lag spikes. Loading times should be affected too. Even if your pc's great, if the game is running at, say, 60.3 fps instead of 60.0, the physics will be subtly screwed up. This is also the fix for 7-19x problems. 
Add supermeatboy.exe on the program's list, set it to 60fps and leave the program open in the background while running.

Check forums for more details

Rivatuner

A tool that allows you to reset saves with clear saves or custom premade saves (start at a certain world with a certain character), choose all launch options (like -ultralowdetail, -devmode, -palette, -fullscreen etc)..

SMBResetter

A tool to view your Super Meat Boy savefile stats

Super Meat Boy Stats

Some nice IL any% subsplits for you to use  with LiveSplit. This will save you a lot of typing!

Thermospore's any% IL subsplits

IL Level Laderboard subsplits for you to use with LiveSplit.

vostok Level Laderboard IL subsplits (Light/Dark world)

XinputView

PackSciences

Mijzical

thebmxbandit11

warm_ham

diglio

d265f27

Matte

Misteur

cal_

Thermospore

vostok

PlayerGameSK

Super Meat Boy

Light Salt

Dark Salt

Light Hell

Dark Hell

Dark Rapture

ChrisS97

Meat Boy

Commander Video

Flywrench

Ogmo

Jill

The Kid

Headcrab

Josef

Alien Hominid

Gish

Naija

Runman

Spelunky

Captain Viridian

Pink Knight

N+ Ninja

4bit Meat Boy

8bit Meat Boy

4color Meat Boy

Goo Ball

All Glitches

All Light Levels

All Levels

Tofu Boy

Multiple characters

No Clips

Clips

Meat Ninja

Steve

Dr. Fetus

Potato Boy

Brownie

Character

Glitches used

Which Naija%?

Wii U

Xbox 360

PlayStation Vita

PlayStation 4

Xbox One

Macintosh

Linux

Switch

Nvidia Shield

PlayStation 5

Xbox Series X

Xbox Series S

How to get started playing this game

Game stuck on initial loading screen? Here's the fix

Does anyone have a 100% save for switch or wii U?

100% save file for switch or wii u?

1-1 bug ( i'm not sure)

Videos

vorpal

kingshrooms

Fimbz

Crep

AmericanWalrus

Slodderhaai

Narvath

wogyt

nvd123YT

DrZytho

LSJames

Azsxdcfvgbhnjmkl

MordecaiYoteodio

balkax

Name	Manager
Bandage Resetter von d265f27	warm_ham 10 years ago
Character Unlocker von thebmxbandit11	Misteur 8 years ago
Control Station von diglio	PackSciences 10 years ago
IL tool von thebmxbandit11	Gelöscht -
JoyToKey von jtksoft	Gelöscht 11 years ago
KeyboardToControllerMapper von d265f27	Matte 9 years ago
List of levels von -7	-7 9 years ago
NohBoard von ThoNohT	Gelöscht -
Practice Program von thebmxbandit11	Mijzical -
Rivatuner	Misteur 9 years ago
SMBResetter von cal_	cal_ 8 years ago
Super Meat Boy Stats von Jaex	Mijzical -
XinputView	Gelöscht -

Name	Manager
Thermospore's any% IL subsplits von Thermospore	Thermospore 9 years ago
vostok Level Laderboard IL subsplits (Light/Dark world) von vostok	vostok 6 years ago

Name	Manager
106% Saves for Switch & Wii U von PlayerGameSK	PlayerGameSK 2 days ago
Individual saves for the start of each light chapter von Thermospore	Thermospore 9 years ago