Unofficial Skyrim Legendary Edition Patch by Unofficial Patch Project Team – Comprehensive bug-fixing mod for Skyrim, aiming to eventually fix every bug in the game.
The DLC (Part 2) needs to be extracted manually and installed separately. The official Hi-Res DLC can be deactivated in Steam.
Optimized Vanilla Textures by tony971, SkyrimTuner, Ghostifish and STEP Team – Optimized versions of the vanilla and DLC textures.
Incorporates Sheson's Memory Patch which is a must-have for heavily modded games.
SKSE by SKSE Team – Expands the scripting capabilities of Skyrim, allowing mod authors to create mods that wouldn't have otherwise been possible.
I will keep my mod list clean and ready, even as I am clean and ready. I will learn its weaknesses and its strength. My mod list is human, even as I, because it is my life. I must master it as I must master my life. There are many like it, but this one is mine.