Some Libraries (in bold) are downloadable:

Blocks Base
Blocks Primes
Flesh
Form

InSIDious
Kontour

Mikro Prism
Molekular
Monark
Polyplex

Prism
Razor
Reaktor Blocks

Reaktor Blocks Wired
Reaktor Factory Library
Reaktor Factory Selection R2
Rounds
Skanner XT

Spark R2
Super 8 R2
The Finger R2
The Mouth
TRK-01
TRK-01 Bass
TRK-01 Kick
WHOOSH