What is ReleaseRun?

ReleaseRun is a collection of 84 free browser-based tools for developers who need fast, reliable answers about their software stack. No login, no paywall, no installation required. The tools cover dependency health across major ecosystems (npm, PyPI, Go, Cargo, Maven, Composer, NuGet, RubyGems), security scanning for infrastructure-as-code files (Dockerfile, GitHub Actions, K8s YAML, Terraform), end-of-life checking for runtimes and databases (Node, Python, PostgreSQL, Docker), and utility tools like an HTTP headers analyzer, PromQL builder, uptime SLA calculator, and CVE dashboard. Everything runs in your browser, making it ideal for quick checks during development or CI planning.

Who it's for

• Platform engineers — who need to audit dependency health and security posture across multiple package ecosystems without leaving the browser.
• DevOps and SRE teams — who want to scan Kubernetes manifests, Terraform plans, and Dockerfiles for misconfigurations before deployment.
• Individual developers — who need a fast way to check EOL dates, CVE exposure, or upgrade safety for their current stack without reading changelogs.

Key features

Dependency health scanners

Paste your lockfile or manifest (package.json, requirements.txt, go.mod, Cargo.toml, pom.xml, composer.json, Gemfile) and instantly see outdated, abandoned, or risky dependencies. Each scanner flags deprecated packages, single-maintainer risk, yanked versions, and major version gaps.

Security scanners for config files

Paste Dockerfiles, GitHub Actions workflows, Kubernetes YAML, Terraform HCL, or Docker Compose files to get a security score with specific fix recommendations. Checks include runAsRoot, privileged containers, hardcoded secrets, missing permissions, supply chain attack vectors, and unencrypted resources.

EOL timeline and upgrade tools

View your entire stack's end-of-life status on a single chart covering 30+ technologies. The Kubernetes deprecation checker scans YAML for APIs removed in K8s 1.33+ using 99 rules. Additional tools include a Cron builder, PromQL builder, Nginx config generator, and CIDR calculator.

Health badges and CLI

Generate dynamic SVG badges showing version health, CVE counts, and EOL status for 300+ products to embed in your README. For local checks, use the CLI (npx releaserun check or brew install Releaserun/tap/releaserun) to run health checks without sending data to a server.

What stands out

"84 free tools for developer upgrade safety — no signup, no install, runs in your browser."

ReleaseRun's edge is its completeness without friction. Most developer tooling requires account creation, API keys, or local setup. ReleaseRun gives you 84 tools that work instantly from any browser, covering the full lifecycle from dependency auditing to security scanning to EOL planning. The monthly release digest (one email per month, no spam) keeps you informed about breaking changes and security patches across 300+ technologies without drowning your inbox.

Worth checking out if…

You're tired of signing up for yet another SaaS tool just to check if a dependency is abandoned, or you need a quick way to scan Kubernetes YAML for deprecated APIs before a cluster upgrade. ReleaseRun is especially useful if you work across multiple package ecosystems and want a single place to audit npm, PyPI, Go, Cargo, Maven, Composer, NuGet, and RubyGems health. It's also a solid choice for teams that want to embed live health badges in their READMEs or run local checks without sending data to a third-party server.