JavaScript YAML

Open-source JavaScript projects categorized as YAML

YAML is a digestible data serialization language that is often utilized to create configuration files and works in concurrence with any programming language. YAML targets many of the same communications applications as Extensible Markup Language but has a minimal syntax which intentionally differs from SGML.

Top 16 JavaScript YAML Projects

  1. prettier

    Prettier is an opinionated code formatter.

    Project mention: 30 Best Free Tools for Frontend Developers in 2025 | dev.to | 2025-03-01

    Website: prettier.io

  2. CodeRabbit

    CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.

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  3. gray-matter

    Smarter YAML front matter parser, used by metalsmith, Gatsby, Netlify, Assemble, mapbox-gl, phenomic, vuejs vitepress, TinaCMS, Shopify Polaris, Ant Design, Astro, hashicorp, garden, slidev, saber, sourcegraph, and many others. Simple to use, and battle tested. Parses YAML by default but can also parse JSON Front Matter, Coffee Front Matter, TOML Front Matter, and has support for custom parsers. Please follow gray-matter's author: https://github.com/jonschlinkert

    Project mention: Updating my website's tech stack in 2025 | dev.to | 2025-02-27

    Next is shifting towards what they're calling App Router. The previous itteration, known as Pages Router is not compatible with those shiny new React Server Components I mentioned earlier. The main difference to me was using simple fetch and async/await syntax to fetch the server side props. In this case, I had a node script that relied on fs to retrieve the markdown files and a library called gray-matter to retrieve their YAML metadata properties. Then all I had to do was transform my [slug] page into an async function and call the function that fetched the posts from the filesystem.

  4. DevOps

    I created this repository to keep my learning, notes, and code in one place for various tools in DevOps. Now, it's helping thousands of learners, practitioners, and professionals every day in their DevOps journey.

    Project mention: My Hacktobefest 2024 Experience | dev.to | 2024-11-01

    This year, I was unable to make my repo "ready" for Hacktoberfest, but I got some PRs on the non-technical front on the DevOps repo. In case you didn't know about this DevOps repo, it is one of the most popular open source repos in the world to learn DevOps with a whopping 2.8k+ GitHub stars.

  5. lowdefy

    The config web stack for business apps - build internal tools, client portals, web apps, admin panels, dashboards, web sites, and CRUD apps with YAML or JSON.

    Project mention: CodeMic: A New Way to Talk About Code | news.ycombinator.com | 2024-12-22

    Would love this for us to help us build interactive tutorials for Lowdefy, very cool. also think it is important that it exports well to youtube etc. and link back for when users want the interactivity.

    Would be super if the player can be embed in docs.

    https://lowdefy.com

  6. just-api

    :boom: Test REST, GraphQL APIs

    Project mention: Show HN: Posting v1 – The modern HTTP client that lives in your terminal | news.ycombinator.com | 2024-07-10

    This looks great. I love that it's using YAML files that can be version controlled and shared.

    I developed Just-API (https://github.com/kiranz/just-api) with YAMLs for automation testing of APIs.

  7. panini

    A super simple flat file generator. (by foundation)

  8. home-assistant-config

    My Home Assistant Configuration 🏡🏡 (by aneisch)

  9. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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  10. JokeAPI

    REST API that serves uniformly and well formatted jokes in JSON, XML, YAML or plain text format that also offers a great variety of filtering methods

    Project mention: 7 Free APIs to Spark Your Next Fun Project | dev.to | 2025-03-20

    Joke API (https://v2.jokeapi.dev) - Jokes of all kinds, safe or silly.

  11. autoserver

    Create a full-featured REST/GraphQL API from a configuration file (by ehmicky)

  12. tree-sitter-yaml

    YAML grammar for tree-sitter

  13. stated

    Stated is a REPL and library for embedding JSONata expressions into JSON or YAML

  14. osint

    Open Source Intelligence - Reconnaissance Framework (by digital-clouds)

  15. rocketchat-emoji-bulk-upload

    Rocket.Chat Emoji Bulk Upload: A Node.js script to easily import custom emojis from a YAML file into a Rocket.Chat instance using the Rocket.Chat API. Automate bulk imports and simplify managing your custom emojis.

  16. monokle-chrome-extension

    Deprecated - Integrates actions for discovering and exploring Kubernetes resources with Monokle Cloud into the GitHub User Interface

  17. guestbook-example-on-kubernetes

    K8s guestbook example deployed with k14s tools

  18. kaeru

    automatically generates files based on a YAML structure (by leonardomaier)

  19. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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Index

What are some of the best open-source YAML projects in JavaScript? This list will help you:

# Project Stars
1 prettier 50,163
2 gray-matter 4,076
3 DevOps 2,829
4 lowdefy 2,767
5 just-api 818
6 panini 592
7 home-assistant-config 320
8 JokeAPI 262
9 autoserver 205
10 tree-sitter-yaml 99
11 stated 14
12 osint 8
13 rocketchat-emoji-bulk-upload 4
14 monokle-chrome-extension 3
15 guestbook-example-on-kubernetes 3
16 kaeru 2

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