This is a very cool editor made specifically for GLSL Minecraft shaderpacks. It has lots of features and some cool themes and no secrets at all! I have spent way too much time on this but I think it's cool

Features:

• No secrets at all!
• Code completion that works 100% of the time!
• GPU accelerated!
• Multithreading!
• Icons for way too many things!
• Open "Source"!
• Now with GPU acceleration!
• RegEx find and replace!
• Compatible with existing Godot themes!
• Cross-platform (only Windows and Linux)!
• 100% GDScript!
• Easy codebase to read!
• "Open" source!
• Accelerated with the graphics processing unit!
• Ligatures!
• Text rendering is GPU accelerated!
• MIT licensed

Some pictures: