From Resonant Rise Wiki
Name DenLib
Creator Unknown
Type Core Libraries
Latest Version 3.0.14
Minecraft Version 1.5.2
Website Author's Dropbox
Root Mod Unspecified
Modpacks Blood N' Bones
DNS Techpack
Direwolf20 1.5 Pack
Direwolf20 1.6 Pack
Feed The Beast 1.5.2 Beta Pack
Feed The Beast Monster
Feed The Beast Unleashed
JoeGaming ModPack
Resonant Rise Lite
Tech World 2
Test Pack Please Ignore
Yogscast Complete Pack

DenLib is a core library mod needed by denoflions mods, such as Plugins for Forestry, GateCopy, DenPipes and HD Skins and Cloaks.