Doppler vs PX Secrets

Doppler is a secrets manager for storing and managing sensitive application secrets through a dashboard, API, and command-line tool. It centralizes secret management with config syncs, secret referencing, and automatic rotation on eligible plans. Its MCP server lets AI agents request secrets natively, and Doppler says per-seat pricing adds no fees for AI agents or other non-human identities. Developers can use a CLI, SDKs, API, webhooks, and a VS Code extension with two-way sync. Listed integrations include AWS Secrets Manager, Terraform Cloud, GitHub Actions, Kubernetes, GCP Secret Manager, Azure Key Vault, Vercel, and Okta. Security controls include scoped tokens, fine-grained access, breach detection, encrypted fallback files, and trusted IP allow lists. Doppler says it encrypts and tokenizes secrets using AES-256-GCM and is SOC 2 and ISO 27001 certified. Deployment is available in the cloud or on-prem. The Developer plan is free for three users, with additional users at $8 a month. Team costs $21 per user per month and is free for 14 days. Enterprise pricing is custom.

PX Secrets is a free, open-source secrets manager that stores an encrypted vault on the user’s machine. SOPS and AGE encrypt the vault on disk, while the project says the private AGE key is read directly by SOPS rather than handled by PX Secrets. A dark web interface offers search and service grouping, with an optional native desktop window through pywebview. The CLI lists services and retrieves named secrets for scripts. A local API supports runtime retrieval by scripts and AI agents, and the application can run headlessly as a background service. Docker deployment and CI/CD use are documented. The project states that it makes no network calls and collects no telemetry, analytics, usage tracking, or crash reports. Clipboard copies clear after 30 seconds, and temporary plaintext files are deleted after encryption. Linux and macOS are supported; Windows may work but is untested. Requirements include Python 3.9+, SOPS, and AGE. The software is licensed under AGPL-3.0.