There are 3 repositories under skse-plugin topic.
JSON-based data structures for Papyrus (TESV Skyrim scripting language)
Elevate the CPU Priority of the Skyrim/Fallout process. Increase FPS and Prevent stutters caused by other processes.
Skyrim SE tool for worldbuilding
An SKSE plugin for The Elder Scrolls V: Skyrim SE with an MCM menu that allows you to hide any of your journal's quests!
SKSE plugin that allows hiding notifications based on customizable rules.
BestInClass++ is a SKSE plugin for Skyrim Classic. It improves the BestInClass functionality offered by default in the game, by considering more categories and types for armor, weapons, and similar.
A SKSE plugin for Skyrim Special Edition that allows you to manipulate lists and containers, items, effects and so on at startup with configuration files.