Line0
Hey HN, I'm Ivan - Founder of Vratix. I left my job 7 months ago to build tools that make backend development easier. I started with an open source library of reusable Express.js API modules that got some traction. After talking to a lot of developers, one thing became clear - backend has been somewhat ignored by the recent wave of AI coding tools. That’s why I decided to create an AI pair programmer built and designed specifically for backend engineers. I spent the last 2 months building Line0 and today I am opening up the public beta to the world. With Line0 you can get a working backend…
Line0 launched on May 22, 2025 with 50 votes, #628 of 7,905 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Line0 is the AI pair programmer designed and built specifically for backend development. You can build fully working Express.js backend API services in minutes. Line0 has a 2-way integration with GitHub, in-browser code edditor and prompt enhancement.
The first AI pair programmer for backend developers. Build Express.js backend services with the help of AI. Made by Vratix.
More backend frameworks and languages will be supported in the future Build in natural language Describe the backend functionality you want in natural language and let Line0 handle the rest. Just Tab to prompt Forget about prompt engineering. Press tab to autocomplete as you type or use "Enhance" to instruct Line0 like a pro. Edit code Edit your full project code directly in the Line0 code editor. Split features into chats Build each feature in a separate chat to help Line0 produce better results and organize your project. 2-way Sync with GitHub Connect your GitHub account to seamlessly sync and store your generated code directly in your repositories. Peace of mind Code is automatically…from line0.dev
In the maker’s words, at launch
Hey HN, I'm Ivan - Founder of Vratix. I left my job 7 months ago to build tools that make backend development easier. I started with an open source library of reusable Express.js API modules that got some traction. After talking to a lot of developers, one thing became clear - backend has been somewhat ignored by the…
Does a similar job
all alternatives →
Vx.dev – GitHub-Powered AI for effortless development2024 · vxdev.pages.dev · ▲96
More ai this month
the category →
Paintings by AI models: programs run through a simulation of oil paint.
AI · 20d ago · stillwet.art
PixVerse R2▲381A real-time world model you can explore and change
AI · 29d ago · world.pixverse.video
Source: Product Hunt launch ↗ · launch text quoted in part
Launched alongside, May 2025
the whole month →
Tapflow 2.0▲1,125We built Tapflow for devs, designers, PMs, and tech folks who’ve been sitting on internal docs, templates, and systems — but never productized them. Upload a PDF, notes, or workshop deck, and Tapflow drafts a structured product (with chapters, teaser and pricing plans). It’s good for AI kits, onboarding guides, design systems, and frameworks. You can sell through Stripe, LemonSqueezy, or PayPal. Real-time collaboration is in early beta. No site builder, no LMS — clean design and just focused tools to ship. Fully bootstrapped and just launched on PH today →…
Work · 2025 · tapflow.ai
- C9
Life & fun · 2025 · felixrieseberg.github.io
Appwrite Sites▲990Appwrite 2.0 brings a new engine, a rebuilt Console, five database types, an S3 API, an OAuth 2.1 server, and organization-level Domains and Firewall.
Dev tools · 2025 · appwrite.io
