The main reason behind this merge is the mod compatible with Risugami's FML, which is not being updated past Minecraft 1.6.2. But after Minecraft 1.6, FML is merged into Minecraft Forge.
After initialization, you should see Minecraft Forge, Forge Mod Loader and Minecraft Coder Pack installed in your Minecraft. Back in the day, to manage your Minecraft mods list, you needed to install Forge Mod Loader (FML).
Once a player has installed Minecraft Forge, player can install any mods that are compatible with either Minecraft Forge, or Forge Mod Loader. Vivecraft supports Forge mods on versions 1.12.2 and below. Minecraft Forge is a mod management system for Minecraft, that allows the dynamic loading of other Mods, as well as basic dimension, blockID and itemID handling. Eloraam, FlowerChild, Hawkye, MALfunction84, Scokeev9, SpaceToad, LexManos