nowfound

Dev tools · February 16, 2022

volder

Schema builder and data validation for javascript

volder launched on February 16, 2022 with 63 votes, #852 of 2,645 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 4 years on.

What it does

new way of describing data volder: is powerful Object schema validation, it lets you describe your data using a simple and readable schema and transform a value to match the requirements, it has custom error messages, custom types and nested schemas.

volder is powerful Object schema validation lets you describe your data using a simple and readable schema and transform a value to match the requirements - devSupporters/volder

Does a similar job

all alternatives →
  • PromptTools – open-source tools for evaluating LLMs and vector DBs2023 · github.com · ▲211

    Hey HN! We’re Kevin and Steve. We’re building PromptTools (https://github.com/hegelai/prompttools): open-source, self-hostable tools for experimenting with, testing, and evaluating LLMs, vector databases, and prompts. Evaluating prompts, LLMs, and vector databases is a painful, time-consuming but necessary part of the product engineering process. Our tools allow engineers to do this in a lot less time. By “evaluating” we mean checking the quality of a model's response for a given use case, which is a combination of testing and benchmarking. As examples: - For generated…

  • Schema Validator Browser Extension2023 · sproutseo.io · ▲122

    Boost SEO with One-Click Schema & Rich Results Testing

  • TA
    TypeSchema – A JSON specification to describe data models2024 · typeschema.org · ▲117

    TypeSchema is a JSON specification to describe data models in a programming language neutral format.

  • Structured data validator2020 · redirection.io · ▲11

    A full-featured schema.org rich cards validation tool

  • Schema ValidatorNov 2025 · schemavalidator.com · ▲6

    Free json-ld & schema.org validator tool

More dev tools this month

the category →
  • Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

    Dev tools · 2d ago · github.com

  • /dev/null▲492

    a social network for devs

    Dev tools · 5d ago · dev-null.sh

  • open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

    Dev tools · 29d ago · github.com

  • Contribute to reladraw/reladraw development by creating an account on GitHub.

    Dev tools · 27d ago · github.com

  • OpenBot▲362

    Grok Bot alternative: free, local, open-source, multiplayer

    Dev tools · 25d ago · openbot.run

  • Talanoa▲346

    Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

    Dev tools · 22d ago · talanoa.email

Source: Product Hunt launch ↗

Launched alongside, February 2022

the whole month →
  • Bardeen▲1,286

    One-click automations for your repetitive tasks

    Growth · 2022 · bardeen.ai

  • Sha256 algorithm explained online step by step visually

    Life & fun · 2022 · sha256algorithm.com

  • Today, after years of research, development, and refinement EdgeDB graduates to a production-ready database. We are very proud to announce EdgeDB 1.0.

    Dev tools · 2022 · edgedb.com

  • Medusa▲893

    The open-source Shopify alternative

    Dev tools · 2022 · medusajs.com

  • Trusted ways to help Ukraine stop Russian aggression

    Life & fun · 2022

  • 100 ideas for your startup's first 100 users

    Growth · 2022 · first100users.com