Top mods / Repurposed Structures - Fabric
Listed
Repurposed Structures - Fabric lists support for Minecraft 26.3 on Fabric.
Open Repurposed Structures - Fabric on Modrinth
Also lists 4 snapshot or pre-release versions, not counted here.
This is what the mod's author listed on Modrinth, not a test. A listing doesn't prove a mod runs on your setup, and a missing listing doesn't prove it fails. Versions must match exactly, and files published elsewhere, such as CurseForge, aren't counted.