iZotope 64-bit SRC, MBIT+, Consumer Restoration & SonicFit

SRC & dither, FHX and scrubbing algorithms by Goodhertz

MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson Licensing

Ogg Vorbis & FLAC by the Xiph.Org Foundation

Sparkle by Andy Matuschak

REX Shared Library by Propellerheads [download]

Musepack by the Musepack Development Team

Monkey's Audio by Matt Ashland

WavPack by David Bryant

Looking for an acoustical measurement tool to complement Spectre? We think that Spectre and SuperMegaUltraGroovy FuzzMeasure Pro are a match made in analysis heaven.