01
Valhalla Supermassive
by Valhalla DSP · Huge reverb / delay
The obvious free pick: enormous, evolving spaces. Different algorithms, so not a Blackhole sound-alike.
VST2VST3AUAAXmacOSWindows
Eventide Blackhole · EventideFree alternatives to Eventide Blackhole
Massive, otherworldly reverb for ambient and sound design. Here are 2 genuinely free options, ranked by how close they get.
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02
Cloud Seed
by Ghost Note Audio · Algorithmic ambient reverb (open source)
Long, lush ambient tails. Fewer modulation options than Blackhole.
VST3AUmacOSWindows
Free means free: no trials, no time limits, no demos. Some need a free account; we flag those. Spot something wrong or a better swap? Tell us.
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FabFilter Pro-R 2
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Audio Ease Altiverb 8
Audio Ease · paid → 2 free swapsConvology XTMConvolutionEZ
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Valhalla Room
Valhalla DSP · paid → 3 free swapsDragonfly ReverbTAL-Reverb-4Valhalla Supermassive
Reverb
Valhalla Shimmer
Valhalla DSP · paid → 3 free swapsValhalla SupermassiveCloud SeedKilohearts Essentials
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