Features:

Bedrock JSON-Based Entity & TileEntity Animations – Easy-to-use system that allows you to play complex entity (or tile entity) animations, which are parsed from JSON. More info here: (click)
JSON Models for EntityRenderers and TileEntityRenderers – Allows you to use Bedrock JSON Entity Models in Minecraft Java Edition! You can use Blockbench for creating them.
On-Fly Blockstate/Model Generator – Allows you to generate simple item/block models and blockstates, so you don’t need place them in resources now!
Structure Revealer – Can be used for debug purposes, shows bounding box of the every subscribed structure piece.
Comfortable system for Block/Item/Sound/TileEntity/Packet/Config/AdvancementCriterion/Structure/StructurePiece/StructureProcessorType Registering – Provides a simple way of creating and registering all specified stuff. And there is SimpleForgeRegister and SimpleVanillaRegister (thread-safe) for other registries, that doesn’t have additional settings.
Improved Config-Building System – More comfortable way of creating configs.
Safe Network System – No more exploits of sending packets to the wrong side.
Simple-to-use Reflection system – automatically unlocks fields, methods and constructors, when you’re accessing them via Reflection.
Client-side Commands – provides the way of creating commands, that exist only on client side.

Permissions:

You can use this mod in your modpack and distribute it inside your modpack across CurseForge Platform.
You are not allowed to re-publish this mod to other sites if it doesn’t provide CurseForge download link.
You are not allowed to include Time Core Port or a part of it directly in your mod. But you can use it as a dependency.

Original mod Time Core by Time_Conqueror.