Forge is the original Minecraft modding API, in continuous development since 2011, and it is the reason a huge share of the mods and modpacks that exist today were possible to build at all. Understanding what it actually provides explains both its enormous mod library and its reputation for being a heavier framework than newer alternatives.
A full framework, not just a loader
Unlike Fabric's minimal approach, Forge provides a large, batteries-included API: mod developers get extensive hooks into game systems, a shared set of utilities most mods rely on, and a stable, well-documented contract for how mods interact with the base game and with each other. This is precisely why Forge accumulated such a deep mod ecosystem over more than a decade, developers were building on a common, powerful foundation rather than each solving the same low-level problems independently.
Why the mod library is so large
Because Forge has existed for so long and so much tooling and community knowledge is built around it, huge, long-running content modpacks (the kind with hundreds of mods, new dimensions, full tech and magic progression trees) are overwhelmingly Forge-based, or NeoForge-based since the 2023 fork inherited that same lineage. If you are chasing a specific well-known modpack, especially an older or more established one, there is a strong chance it targets Forge specifically.
The tradeoffs
Forge's depth comes with real weight: more RAM overhead than Fabric at idle, slower startup, and historically slower support for brand-new Minecraft versions, since a large framework takes longer to update than a minimal loader does. Forge's internal governance disagreements also led a large part of its own development team to fork the project into NeoForge in 2023, which has since become the more actively developed option for new (1.21+) Forge-lineage modpacks.
Is Forge still the right choice?
Forge remains the right pick specifically when the modpack or mods you want to run were built for it and were never ported to NeoForge, which is common for older, established packs. For a brand-new modded server with no specific legacy modpack requirement, NeoForge is now generally the more actively developed choice within this same lineage, while Fabric is the better fit if lightweight performance mods, not large content packs, are the goal.
Getting it running
Forge servers need the Forge installer run against the matching Minecraft version, which generates the server files and startup scripts automatically. From there, mods go in the mods folder like any other loader. A server requirements tool can help estimate what hardware a specific modpack actually needs before you commit to a plan. Tick Hosting's panel installs Forge with a one-click selector on every plan, including the free tier, from Tick Hosting's plans page.