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Free, open-source AWS emulator. LocalStack alternative: 41 services, 3,704 operations, true 100% Smithy conformance (124,255/124,255 variants pass). No account, no auth token, no paid tier.

351 starsRust

Fakecloud – Free, open-source AWS emulator

by lucas_vieira·Apr 15, 2026·37 points·9 comments

AI Analysis

●●●●GemZero to OneSolve My ProblemWizardry

LocalStack went proprietary—this AGPL binary fills the gap with 54k test variants.

Strengths
  • 54,000+ generated test variants validated against AWS Smithy models on every commit
  • Runs Terraform provider acceptance tests catching waiter and drift bugs
  • Single 19MB binary with real Docker containers for Lambda and RDS services
Weaknesses
  • AGPL license may block adoption in some enterprise environments
  • New project—service coverage likely narrower than LocalStack's decade of development
Target Audience

Developers testing AWS integrations locally

Similar To

LocalStack · moto · Docker LocalStack

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