Marcel Kargul Open-Sources Next.js Workflow Editor

X postMarcel KargulAnnouncement

Marcel Kargul has released the source code for his interactive workflow editor on GitHub. The application is built with Next.js 16, React 19, and Tailwind CSS 4, and was developed in a single day using AI tools for routine tasks.

Key points

  1. The workflow editor repository is publicly available on GitHub at kargulstudio/workflow-editor.
  2. The stack is built on Next.js 16, React 19, and Tailwind CSS 4, incorporating AI guideline files such as AGENTS.md, CLAUDE.md, and CONVENTIONS.md.
  3. Kargul stated that the functional editor was built in a single day, with AI handling repetitive implementation tasks.
  4. Follow-up updates confirm plans to open-source additional CRM and Kanban projects shortly.

Why it matters

The repository serves as a reference implementation for complex UI editors built on recent frontend stacks, illustrating how explicit prompt guidelines and conventions can support AI-assisted development.

Analysis

By structuring the codebase with specific convention files for agentic workflows (AGENTS.md, CONVENTIONS.md), the repository highlights an emerging pattern: designing software projects to be maintained and expanded efficiently alongside AI coding assistants.

Original post

Marcel

@marcelkargul · 3 October 2026

made it open-source 😉 t.co/KFUmGWgNJn t.co/WBZ1Fk7TSP t.co/ft2vPmHCUm

1.1k likes26 replies2k bookmarks87k views

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More posts in the thread (2)
  1. t.co/aY8FnJvfnZ
  2. @C1131_twt will opensource the crm and kanban over next few days
Selected replies (5)
  • @C1131_twt @marcelkargul I expected CRM But its nice 👍👍
  • @Etienne653137 @marcelkargul @SaveToList
  • @barbinbrad @marcelkargul nice work
  • @themishra4402 @marcelkargul thanks man 👏
  • @AbdurRazzaak @marcelkargul coool

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