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Sling.biz

An Open Source alternative to Builder.io.

Developer toolsheadless-cmsfrontend-frameworkdrag-and-drop-editorMVPGermany

Sling.biz is a less-code frontend framework and drag-and-drop CMS designed to create and update web pages on the fly. Built on Next.js and Material UI, it acts as a frontend head for headless APIs, allowing developers and marketing teams to easily customize layouts, templates, and React widgets without redeploying code.

Visit Sling.biz →sling.biz· Listed Aug 19, 2026

Snapshot

0Page views4Visits sent0Signups127Posts shipped0Day streak

Product analysis AI · from sling.biz

Problem it solves

The friction and delays caused by needing to redeploy backend and frontend code just to change simple marketing banners, filters, or page layouts.

Why people use it

An open-source, customizable drag-and-drop frontend CMS that integrates with headless backends to let teams update page layouts and React widgets in real time.

Built for

Web Developers and CTOs building with Next.js

Also: Marketing teams needing to modify static pages on the fly, E-commerce site operators using headless backends

What makes it different

  • Open-source alternative to Builder.io with self-hosted options
  • Completely customizable pages, templates, and widgets written in Next.js
  • Features a local Studio Panel that bypasses the need for cloud-only editors
  • Developer-friendly setup via the simple `create-sling-app` command

Business model

freemium

Alternatives

Builder.ioBuilder.io

Industries

martechsoftware-developmente-commerce

Building in public

XMost developers can spot a lazy, automated cross-post on Reddit or X within two seconds. The exact same product announcement that gets polite applause on LinkedSep 30, 2026Xblasting the exact same product update across x, linkedin, and reddit is how you burn developer trust. devs spot lazy cross-posting in seconds. a corporate postSep 30, 2026Xcopy-pasting the exact same product update across different dev communities is the fastest way to get ignored. engineers on reddit can smell a generic marketingSep 30, 2026Xsmall session on AI drafting today, just sorting out those tiny UI papercuts that drive you crazy when they are slightly off. Created with publishloud.com - AISep 29, 2026Xnot a headline feature, just Sling.biz feeling more reliable. Inject makeStyles on publish and honor widget page size 1000. Created with publishloud.com - AI foSep 29, 2026Xshipped something on Sling.biz today. Stop showing a white live preview for unpublished pages. (#44). Created with publishloud.com - AI for product marketing.Sep 29, 2026

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