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Dev tools · alternatives · 2026

24 alternatives to Lowdefy – Build internal tools with YAML on an open-source framework

We're excited to announce Lowdefy V4, a full-stack web framework built on top of Next.js that simplifies building web applications, internal tools, admin panels, BI dashboards, and CRUD apps using YAML or JSON configuration files. New in V4: Next.js: Lowdefy now runs on top of the Next.js framework. All of Auth.js: App auth is now handled by Auth.js supported providers, adapters and callbacks and events, easy to configure, but all of which can be customized. Plugin extensibility: Apps can now be extended with any npm or pnpm workspace plugins. Our story: We have developed a simple…

Lowdefy is an open-source framework for building internal tools using YAML configuration. It enables developers to create applications without writing extensive custom code by defining tool structure and logic in YAML… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Lowdefy – Build internal tools with YAML on an open-source framework launched in 2021; newer entries below may have overtaken it.

  1. 1

    Build powerful & dynamic web applications – without limits

    2022 · nextjs.org · its alternatives →

  2. 2
    deco.cx 2.0▲1,078

    Build web apps 10x faster with Deno, JSX, TS & Tailwind

    2024 · decocms.com · its alternatives →

  3. 3

    I built µJS because I wanted AJAX navigation without the verbosity of HTMX or the overhead of Turbo. It intercepts links and form submissions, fetches pages via AJAX, and swaps fragments of the DOM. Single tag, one call to `mu.init()`. No build step, no dependencies. Key features: patch mode (update multiple fragments in one request), SSE support, DOM morphing via idiomorph, View Transitions, prefetch on hover, polling, and full HTTP verb support on any element. At ~5KB gzipped, it's smaller than HTMX (16KB) and Turbo (25KB), and works with any backend: PHP, Python, Go, Ruby, whatever.…

    Mar 2026 · mujs.org · its alternatives →

  4. 4HH

    Source https://github.com/dashborg/hibiki | Interactive Tutorial https://playground.hibikihtml.com/tutorial/ I love JavaScript, but for many projects -- especially internal tools and prototypes -- setting up a full frontend JavaScript stack (npm, webpack, babel, create-react-app, redux) and all of their configuration files, folders, and scaffolding is overkill. Hibiki HTML incrementally plugs into any backend, using any template language (even static HTML files) with a single script include. It includes a built-in frontend data model, Vue.js-like…

    2022 · playground.hibikihtml.com · its alternatives →

  5. 5

    Hi HN. I've been working on a new browser-based design tool that's ready for you to try. The idea is you work on your design in low fidelity wireframes, while still getting a high fidelity output that you can share or use as a reference for your implementation. The way it works is by mapping low fidelity blocks you draw into high fidelity design system & React components. I spent several years working on design tools at companies like Airbnb, and I think the ideas behind many of the tools we built for designing at scale could really help startups and small teams as well. I would love any…

    2023 · noya.io · its alternatives →

  6. 6

    1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

    2017 · github.com · its alternatives →

  7. 7

    1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

    2017 · github.com · its alternatives →

  8. 8

    The better runtime for Next.js

    2022 · netlify.com · its alternatives →

  9. 9
  10. 10LA

    Reactive components with React-like patterns at ~9 KB gzip. Zero dependencies, zero build step, designed for humans and AI agents.

    2021 · lemonadejs.net · its alternatives →

  11. 11

    Hi HN! I created this lib in the need of a simple and tiny framework to easily do AJAX-style navigation / replacement of fragments in the page, in a web application. For people who don't want to use client-side-rendering and complex frameworks à la React, there are nowadays a few "HTML-over-the-wire" libraries, like HTMX, Unpoly or this super-tiny one Swap.js :) One other key thing is that no external tool is needed: no bundler, no webpack, no TypeScript compiler, no minification needed. Just write HTML, JS (+ your preferred server-side language: PHP, Python, etc.) and it works. The…

    2023 · github.com · its alternatives →

  12. 12

    TL;DR: dagger.js is a buildless, runtime-only micro-framework that plays nicely with native Web Components. It uses HTML-first directives (e.g. +click, +load) so you can ship a page by dropping a single from a CDN—no bundlers, no compile step. Why I built it Modern stacks are powerful but often heavy: bundlers, compile steps, framework DSLs, local CLIs. For internal tools, small apps, and edge/serverless deployments, I wanted something you can view-source, paste into a page, and ship. What it is: Runtime-only: no build or VDOM compile; hydrate behaviors directly on HTML. HTML…

    2025 · daggerjs.org · its alternatives →

  13. 13

    Yaade is an open-source, self-hosted, collaborative API development environment. - EsperoTech/yaade

    2022 · github.com · its alternatives →

  14. 14
    Next.js▲19

    A small framework for server-rendered universal JS webapps

    2016 · vercel.com · its alternatives →

  15. 15

    Serverless SaaS Boilerplate for building faster with Next.js and Node.js on AWS. React SaaS Starter kit with Express.js including authentication, payment and teams.

    2021 · nextlessjs.com · its alternatives →

  16. 16

    An app for working with local HTML files. Contribute to iffy/lhtml development by creating an account on GitHub.

    2017 · github.com · its alternatives →

  17. 17

    Open-source framework for building SaaS applications with Firebase, React, TypeScript, and Stripe

    2023 · fireact.dev · its alternatives →

  18. 18RA

    I wanted to have a framework that would let me build web apps faster than ever before. I didn’t care if it was a little hacky or didn’t use best practices — I wanted to be able to get a multi-user application out the door in hours instead of months. I researched the CMS space for months before deciding to build something from scratch. My goal was to be 90% done building a web app once I had the static HTML and CSS finished. I’m not a big fan of building out API endpoints over and over again for every new app, fiddling with a database, or doing lots of config. What I ended up with was a…

    2020 · its alternatives →

  19. 19

    An experimental Rust-native build tool for React apps. - lovablelabs/oj

    Sep 2026 · github.com · its alternatives →

  20. 20

    A lightweight boilerplate for a universal webapp based on koa, mongodb, node, vue, and webpack - yunhan0/koa-vue-fullstack

    2018 · github.com · its alternatives →

  21. 21
    JS20▲12

    Build TypeScript backends and SDKs with up to 90% less code. Faster, cheaper & easier to maintain. Ready for the AI era, less code = less tokens & reduced costs.

    Oct 2025 · js20.dev · its alternatives →

  22. 22

    Hey HN, About a year ago I shared a first MVP of a visual node-based system for CI/CD pipelines that I've been very passionate about. I've been building on it since, and it's now live. I've always liked building pipelines and workflows, but I've never liked writing YAML for anything more than simple linear tasks. Branching, conditions, loops, or trying to just run certain things in parallel always gets messy. So I built Actionforge, a visual node system to tackle some of these pain points. Instead of writing YAML yourself, you build workflows as graphs. While Actionforge still uses YAML…

    Feb 2026 · actionforge.dev · its alternatives →

  23. 23
    Nexty▲22

    The Next.js SaaS boilerplate market is saturated, but there's still room if you solve real developer pain points. I believe I've done exactly that – 70+ customers in just 90 days proves there's genuine demand for what Nexty offers. Hi, I'm Jude Wei, a software engineer obsessed with understanding what developers actually need. 90 days ago, I started building what I thought would be just another personal Next.js template. But as features evolved, I realized I was creating something that could genuinely help fellow developers ship faster. That's when Nexty.dev was born. Thanks to incredible…

    2025 · nexty.dev · its alternatives →

  24. 24AS

    Took a stab at building my own string diffing JS package. I built an interactive demo for TypeIt’s website (https://typeitjs.com/build-your-own) a while back. The approach I took to handle user input necessitated a way to calculate the difference between the versions of a user’s text input. I searched around for a package to help me out and found a couple of good ones (like fast-diff), but I either didn’t really like their API or didn’t want to take on a huge new dependency. Instead, I thought I’d give it a shot myself (famous last words). I dove into it having no real formal…

    2022 · its alternatives →

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