Blamsoft is an audio software company based in Spokane, Washington, specializing in synthesizers and effects plug-ins. The company is best known within the Reason Studios ecosystem, where it became one of the more prolific Rack Extension developers, and has since expanded to VST, AUv3 for iOS, and modules for VCV Rack.

Its catalog includes the VK-1 Viking Synthesizer, a monophonic analog-style synth modeled on the Minimoog Voyager that was later released as a free VST, the VK-2 Viking polyphonic successor, and the Expanse Hyperwave Synthesizer, a wavetable instrument that supports Serum-compatible wavetables. The lineup also spans the Zero Hybrid Synthesizer, Blamco equalizers, filter and modular utility devices, and the XFX distortion and reverb modules for VCV Rack.

Blamsoft wraps its identity in a tongue-in-cheek backstory centered on a fictional analog designer named Richard Blam, using the persona as a framing device for its focus on emulating classic analog circuits and building esoteric synthesis tools. The company's work is most often discussed in Reason-focused communities and on plug-in sites like KVR Audio.

Blamsoft has 1 product cataloged on Equipboard, including Synth Plugins. Their gear is featured by 1 artist, with the strongest followings in Rock and Stage & Screen. Notable users include Mr. Sauceman.