Doppler — #5 Alternative to HashiCorp Vault

Name: Doppler
Rating: 4.82 (851 reviews)

Developer-first multi-cloud environment variable and secret sync orchestrator

Syncs environment secrets instantaneously across local dev (`doppler run`), Vercel, AWS Secrets Manager, Fly.io, and Kubernetes with granular audit logs.

License: Proprietary · Pricing: Freemium · Compare all HashiCorp Vault alternatives · Official Website