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v1.0.0 — 39 browser-based DevOps tools

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@PushkarMandark PushkarMandark released this 04 Sep 11:32
· 79 commits to main since this release
v1.0.0
dc502f4

39 DevOps and SRE tools that run entirely in your browser. No signup, no backend, nothing uploaded.

Most online tools for this work ask you to paste a workflow file, a JWT or a Terraform plan into a page that quietly POSTs it somewhere. OpsCanopy does the computation locally instead — in JavaScript, and in WebAssembly where that is what it takes.

opscanopy.com · MIT

What's in it

Area Tools
Observability Loki alert rule tester, Prometheus relabel tester, Alertmanager route tester, PromQL explainer, LogQL ↔ PromQL helper, Grafana dashboard validator
CI/CD GitHub Actions validator, GitHub Actions expression & trigger tester, GitLab CI validator
Kubernetes Resource calculator, label selector tester
Networking Subnet calculator, subnet splitter, CIDR checker, IP converter, MAC formatter, reverse DNS / PTR
Containers Dockerfile linter, docker run → Compose converter
Security Certificate decoder & chain checker, JWT decoder & verifier, hash generator, CVE-ignore converter
Scheduling Cron expression tester, cron → systemd converter, systemd unit validator
Everything else jq playground, regex log tester, JSON ↔ YAML, Base64, URL codec, timestamp, UUID/ULID, chmod, data size, case converter, slugify, .env.example checker, Terraform plan summarizer

A few that don't exist elsewhere

  • Loki alert rule tester — promtool test rules has no Loki equivalent, and grafana/loki#7655 has been open since 2022. The rule engine compiles to WebAssembly and runs in the tab: paste ruler YAML plus synthetic log lines, assert which alerts fire.
  • Prometheus relabel tester — step through what each rule does to a label set, including which rule dropped a target. prometheus/prometheus#8606 has wanted this since 2021.
  • GitHub Actions expression tester — evaluates ${{ }} against a versioned conformance corpus, because if: conditions silently coerce to truthy strings.
  • jq playground — the real jq 1.8.2 binary via WebAssembly, not a reimplementation, so the filter you test is the one your CI runs.

Self-hosting

docker compose up -d     # http://localhost:8080

No database, no volumes, nothing to configure. The image is nginx serving static files, running unprivileged and read-only. It keeps the same Content-Security-Policy as production — _headers is Cloudflare syntax, so the build translates it into nginx form rather than quietly dropping the policy.

Privacy

There is no backend to send anything to. Tool input never leaves the browser; most tools keep working with the network disconnected. See /security and /privacy.

Built with

Astro 7 (static output, native i18n) · Tailwind v4 · TypeScript · WebAssembly · deployed on Cloudflare Static Assets. Localized in English, German, Spanish, French and Brazilian Portuguese. Engines are tested against real RFC/NIST vectors — 3,655 unit tests plus a Playwright journey suite covering accessibility, XSS and keyboard paths.

Assets 2
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