There are 2 repositories under need-for-speed topic.
Need for Speed Heat, CPU 90-100% load fix (script, windows)
Remake of the original EA Need for Speed 1 using c# and Monogame
NFS (Black Box, MW & newer) - XInput Plugin
NFS Underground & Underground 2 - XInput Plugin
Xan's NFS Music Player - Custom music player replacement and a BASS library interface for NFS.
An alternate installer for Need For Speed: High Stakes, built in Inno Setup and targeting modern Windows
NFS Carbon PC - Streak Flare fixer
Need for Speed Most Wanted (2005) Save File Editor
Deep neural network trained to drive Need For Speed III: Hot Pursuit
Need For Speed: High Stakes (Version 4.50) + Modern Patch
An addon to NFS: Most Wanted (2005) with the goal of enhancing the gameplay and adding new general customization options.
Need For Speed: Hot Pursuit + Modern Patch
H-Shifter support for Need for Speed Heat
NFS Custom Playlist Plugin
Export/import magazine/DVD tool for Need for Speed Underground 2 (NFSU2)
Patch old NFS games and get them running on modern systems.
A decompiled and enhanced Visual Treatment and screen effects shader for NFS Carbon.
NFS Underground - Nuzlocke challenge mod
NFS Underground - Proper Windowed Mode
Additional plugins/addons for the NFS 2015 Revival mod.
Joylog control plugin for NFS Most Wanted
NFS Pro Street - Contrails
Data dump stuff for NFS Unbound
This is a simple internal cheat for need for speed carbon, but old src
NFS Underground - Japanese Language Support Plugin