Stack Cost AI

Data Securityhobby stack.

For each requirement below, pick the option that fits your build — recommended first, then free and cheaper alternatives — or skip what your project doesn't need. Tap the info icon next to any requirement to see why it matters.

Encryption Platform / KMS

Pricing & free-tier limitsVault OSS Free self-hosted; HCP Vault $0.03/hr (~$22/mo) + $0.03/10k ops; AWS KMS $1/key/mo + $0.03/10k req + $1/10k asymmetric; CloudHSM $1.88/hr (~$1,373/mo/cluster); GCP KMS $1/key/mo $0.03/10k; Azure KV $0.03/10k ops

Secrets Management

Pricing & free-tier limitsVault OSS Free; Infisical OSS Free, Cloud Free 2 envs 5 members; Doppler Free 5 users/200 secrets, Team $10/user/mo, Enterprise $20/user/mo; HCP Vault Dedicated $0.16/hr/cluster (~$117/mo) + storage $0.50/GB; CyberArk $35k/yr

Encryption at Rest - Block Storage

Pricing & free-tier limitsLUKS Free; EBS Default Free + $1/key/mo if CMK, $0.03/10k req; Azure Disk Encryption Free platform key, CMK $1/key/mo; Thales CTE $12k/yr per host; NetApp VE $2,500/yr/license

Encryption in Transit - TLS / mTLS

Pricing & free-tier limitsLet's Encrypt Free 50 certs/domain/week 90d validity; Cloudflare Free, Pro $20/mo, Business $200/mo; ACM Public Free, Private CA $400/mo/CA + $0.75/cert issued; Istio mTLS Free OSS; Smallstep Professional $340/mo

Backup Encryption

Pricing & free-tier limitsRestic Free OSS; S3 SSE-S3 Free, SSE-KMS $1/key/mo + $0.03/10k; AWS Backup $0.05/GB-mo warm, $0.01/GB-mo cold; Druva $60/TB/mo; Cohesity $0.15/GB/mo; Veeam $1,200/socket/yr + $300/instance

Audit Logs WORM / Immutable Logging

Pricing & free-tier limitsS3 Object Lock Free + $0.023/GB-mo Standard, Glacier $0.0036/GB; CloudTrail Lake $2.50/GB ingested $0.023/GB-mo storage 7yr retention; Azure Immutable $0.02/GB-mo; Splunk Cloud $135/GB/day ingest ~$1,500/mo for 10GB; MinIO Free

Certificate Management / PKI

Pricing & free-tier limitscert-manager Free; Smallstep OSS Free, Professional $340/mo starter, Enterprise $1,500/mo; ACM Public Free, Private CA $400/mo/CA + $0.75/cert; Venafi $50k/yr starting $12k for 500 certs; DigiCert $300/yr OV per cert

Object Storage Encryption (SSE-S3 / SSE-KMS / SSE-C)

Pricing & free-tier limitsS3 SSE-S3 Free, SSE-KMS $1/key/mo + $0.03/10k encrypt + $0.01/10k decrypt; R2 Default Free; MinIO KES Free OSS; IBM KP $1/key/mo $0.03/10k; Wasabi $6.99/TB/mo includes SSE

Client-Side Encryption Library

Pricing & free-tier limitsTink Free Apache 2.0; libsodium Free ISC; SOPS Free OSS; AWS Encryption SDK Free (KMS costs); Voltage $75k/yr minimum; Baffle $60k/yr; Virtru SDK $25k/yr

Key Rotation & Lifecycle Automation

Pricing & free-tier limitsVault OSS Free rotation; AWS KMS annual auto-rotation Free, on-demand rotation Free (pay $1/key/mo); Azure Auto-rotation Free; GCP Rotation Free; CyberArk $35k/yr; Thales CM $18k/yr

Database Transparent Data Encryption (TDE)

Pricing & free-tier limitsRDS Encryption Free (KMS $1/key/mo); Azure SQL TDE Free platform, BYOK $1/key/mo; Oracle TDE $11,500/processor + 22% support; SQL Server Enterprise $13,748/core (2-core pack) for TDE + Always Encrypted; Vormetric $10k/yr/host

Options and prices come straight from our research sheets for a hobby data security project. Prices are estimates and change often — always confirm on the provider's page before committing.

How this hobby data security checklist works.

Each requirement below is something a hobby data security build typically needs. Pick one of the four researched options — recommended, free, cheaper or paid — add your own with "Other", or skip the requirement if your project doesn't need it. Nothing is mandatory; the plan on the right tracks what you've decided so nothing gets forgotten.

Your picks are saved in this browser automatically, so you can come back anytime. Options are researched per build level and refreshed as vendors change their plans — always verify details on the provider's page before committing.