Sildur's Shaders
Minecraft version: 1.7.10 - 1.14.4

Sildur's Shaders is an extension of the GLSL shader mod for Minecraft, now part of Optifine. Vibrant shaders completly revamps the lighting system of minecraft and adds advanced effects like volumetric lighting, bloom, ambient occlusion and reflections. While still maintaining high performance. Enhanced default does what the name indicates, instead of completly revamping the style of the game it maintains the vanilla look and adds shadows, reflections and even godrays. It's very lightweight and highly customizable, so even the worst potato is able to run it.
SEUS Shaders
Minecraft version: 1.11-1.14

SEUS Renewed is a reinvention of the legacy versions of SEUS that brings you quality visuals at a reasonable performance using traditional rasterization-based rendering methods. There are some unreleased development versions of SEUS Renewed, but most of my development time lately goes into developing SEUS PTGI.
Chocapic13' Shaders
Minecraft version: 1.14

This shaderpack aims for a high quality/performance ratio on a wide range of hardware.
Unlike other lightweight shaderpacks, this one tries to maintain a decent quality level even at the lowest possible preset; while the highest presets are able to run at around 60 fps on a mid range gpu like the RX 580 or the GTX 1060 and offers high-end quality.