FrozenPlain is an independent audio software company based in Southern England, founded in 2013 by Sam Windell. The company develops sample libraries and audio plugins aimed at film, TV, and game composers, with a focus on unusual or atmospheric sounds rather than conventional orchestral fare. Its catalog spans ambient and cinematic textures, sound design tools, and specialty instruments, distributed with a self-described emphasis on simple interfaces, fair pricing, and no copy-protection DRM.

Notable releases include Music Box Suite (a sampled antique music box instrument, with a free Victorian Music Box edition), The Chordophones (a collection of hammered and plucked string instruments), and Colourform (a layered sample blending instrument). FrozenPlain libraries were originally built for Native Instruments Kontakt, and the company also develops Floe, a free, open-source sample library platform that runs as a VST3, CLAP, or AU plugin and serves as the host for newer FrozenPlain instruments.

Frozen Plain has 3 products cataloged on Equipboard, including Kontakt Instrument.