SOPS vs HashiCorp Vault
SOPS
SOPS (Secrets OPerationS) is a command-line tool for editing encrypted files. It uses KMS keys (AWS KMS, GCP KMS, Azure Key Vault, HashiCorp Vault, age, or PGP) to encrypt only the values in YAML, JSON, ENV, or INI files. Leaving the keys readable so you can diff changes in Git. Originally created at Mozilla and now a CNCF Incubating project, SOPS is a favorite for teams that want encrypted-in-Git secrets without adopting a full operator.
Pros
- Encrypted values + readable keys makes Git review actually work
- No server or operator to run; pure CLI tool
- Multi-key support makes sharing with teammates painless
- Works with almost every KMS; vendor-agnostic
Things to check
- Requires discipline: anyone can commit an unencrypted secret by accident
- Key management is on you; rotating a compromised key is manual
- Not a secrets manager; no audit trail of accesses
- Only encrypts at rest in Git; runtime apps still need a way to decrypt
Pricing: Free (open source)
HashiCorp Vault
HashiCorp Vault is a widely adopted open-source secrets management tool. It provides a unified interface for managing secrets, encrypting data in transit, and controlling access to sensitive information across distributed infrastructure. Vault supports dynamic secrets, leasing, and revocation.
Pros
- Massive community and ecosystem
- Highly extensible with plugins
- Strong enterprise features
- Multi-cloud and hybrid support
- Free open-source tier
Things to check
- Steep learning curve
- Complex to operate at scale
- Requires dedicated infrastructure
- Enterprise features require paid license
Pricing: Free self-managed Community edition (Business Source License, not true OSS); HCP Vault Dedicated managed cloud from $0.03/hr (about $22/mo) Development tier (HCP rates as of 2022; tiers have since been renamed, verify current pricing), production tiers from about $1.58/cluster-hr plus per-client fees; Vault Enterprise self-managed license is quote-only (contact sales).