No. 10 of 39 ·Secrets Management Tools

Teller

Windows · Mac · Linux

Freedom report

Three barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

Teller is ranked #10 of 39 in secrets management tools on Freedom251. It runs on Linux, macOS, Windows. There is a free plan.

Teller plans and pricing

All plans

Teller Free Open-source universal secret manager for developers github.com · 4 Oct 2026

Compared on secrets management tools

CI/CD injection: Yes
Kubernetes integration: Yes
Deployment model: self_hosted

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The record

Purpose: Teller is an open-source secret manager for developers working with secrets while developing, testing, and building apps.
Use case: It connects to vaults, key stores, and cloud services to help manage secrets for an individual environment or team workflow.
Integrations: The README names HashiCorp Vault, AWS Secrets Manager, Google Secret Manager, HashiCorp Consul, AWS SSM, and dotenv providers.
Provider list: The provider documentation also lists etcd and an in-memory store.
Environment variables: The `teller run` command can run a subprocess with variables fetched through Teller, and `teller env` can supply a Docker `--env-file`.
Secret scanning: Teller can scan code for secrets and can be run in CI with `--error-if-found`, which returns exit code 1 when it finds something.
Redaction: Teller can redact secrets from process output, logs, live log tails, and files.
Provider operations: The README describes copying or syncing mapped values, writing values to supported providers, and deleting values from providers.
Configuration: Provider mappings can specify a root path, mapping ID, and optional key renames; configuration can use environment variables in templates.
Install: The project offers downloadable release binaries and a source installation method using `cargo install --path .`.
Platform evidence: A 2025 issue reports testing Teller 2.0.7 on Linux x86_64; the opened pages do not establish support for other platforms.
Notable limitation: The README says write operations are available only for providers that support write use cases.
License: The GitHub repository identifies the project as Apache-2.0 licensed.
Price from: Free

Where it ranks on Freedom251

Best Secrets Management Tools in 2026#10 of 39
Best Atari Emulators in 2026#7 of 21

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Sources

github.com/tellerops/teller/blob/master/README.md· checked 4 Oct 2026
docs.rs/teller-providers/latest/teller_provider· checked 4 Oct 2026
github.com/tellerops/teller/issues/322· checked 4 Oct 2026
github.com/tellerops/teller· checked 4 Oct 2026