WOML
HTML-like markup language for building durable, executable workflow applications. Combine readable markup with JavaScript logic for automation that's inspectable, testable, and recoverable.
🔗 Visit WOML
Description
Workflow automation tools usually force a choice: either a visual drag-and-drop builder that's easy to read but hits a ceiling once your logic gets complex, or a full programming language that's powerful but unreadable to anyone who isn't a developer. WOML tries to have both — a markup language that looks a bit like HTML, so both a developer and a less technical teammate can follow what a workflow does, while still letting you drop into real JavaScript when you need it.
WOML (Workflow Orchestration Markup Language) is an open-source HTML-like DSL for building durable, executable workflow applications, combining readable markup with JavaScript logic. It supports composable workflows (calling other workflows, publishing events), parallel processing, conditional routing, human-approval steps, and built-in state management with recovery guarantees. Each .woml file is self-contained — serving simultaneously as definition, documentation, and executable — and the project ships 14+ runnable examples covering AI agents, data pipelines, and DevOps use cases.
💬 Our review
The short version: WOML's core idea — a workflow file that's simultaneously readable documentation and an executable program — is a genuinely useful middle ground between no-code builders and full-code orchestration frameworks.
Against n8n or Zapier (visual-first, hit a ceiling on complex logic) and Temporal or Airflow (code-first, powerful but opaque to non-engineers), WOML's differentiator is that its markup-based syntax stays human-readable while still allowing full JavaScript for custom logic, plus durable execution with built-in state recovery baked in from the start. The tradeoffs are that it's community-driven with a much smaller ecosystem than Airflow or n8n, the "no-code-friendly" framing is a bit optimistic since you'll still need JavaScript for anything nontrivial, and homepage guidance on hosting and production deployment is thin. If you want workflows that stay legible to non-engineers while keeping real programming power available, WOML is worth evaluating; for mature, battle-tested production orchestration at scale, Temporal or Airflow currently offer far more operational maturity.
💰 Pricing
📊 Global score
🤖 AI-enriched data
Open source — consulter le dépôt GitHub pour les détails de licence.
Pros
Syntaxe lisible basée sur le markup, fait le pont entre parties prenantes techniques et non techniques
Intégration JavaScript puissante sans plafond de plateforme
Exécution durable avec gestion d'état et garanties de reprise intégrées
Fichiers autonomes servant à la fois d'exécutable, de documentation et de cas de test
Nombreux exemples pour les motifs courants (approbations, agents IA, workflows de données)
Cons
Écosystème plus restreint que des solutions établies comme Airflow ou n8n
Nécessite des connaissances JavaScript malgré un positionnement no-code
Peu de guides d'hébergement et de déploiement sur la page d'accueil
Porté par la communauté, moins de garde-fous pour la production en entreprise
Courbe d'apprentissage pour les équipes non familières du workflow-as-code