Open-source alternative to YC-controlled HN, featuring curated tech news, discussions, and community-driven content.

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Refetch was born from a simple yet powerful idea: create a modern, open-source alternative to Hacker News that combines the best of community-driven curation with intelligent AI-powered content discovery. Free from YC-control, open and transparent, doesn't favor anyone.

🔥 Top Posts Today (Tuesday, September 16, 2025)

Auto-updated with the highest-scoring community content

🥇 Unraveling the Mystery of 'Leopard Spots' on Mars: A New Hint of Life? 📊 Votes: 0 | ⏰ 7 minutes ago | 🔗 Original

🥈 Condor Technology's 'Cuzco' RISC-V CPU to Revolutionize Datacenters 📊 Votes: 0 | ⏰ 14 hours ago | 🔗 Original

🥉 AOMedia's Next-Gen Video Codec AV2 Set for Year-End Launch 📊 Votes: 0 | ⏰ 13 hours ago | 🔗 Original

⭐ Active NPM Supply Chain Attack: Tinycolor and 40 Packages Compromised 📊 Votes: 0 | ⏰ 7 hours ago | 🔗 Original

⭐ In-Depth Review: macOS 26 Tahoe 📊 Votes: 0 | ⏰ 14 hours ago | 🔗 Original

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Last updated: 2025-09-16T08:00:21.416Z

What We're Building

• 🤖 AI-Powered Discovery: Our intelligent scout functions automatically discover high-quality tech content from leading sources so you can be lazy and enjoy
• 🎯 Quality Curation: Advanced algorithms analyze and rank content based on relevance, quality, and community value
• #️⃣ Channels: Reddit-style channels for Appwrite, Python, PHP, Ruby, Rust, AI and more, each fed by its own sources. Join the ones you care about and their best stories gather in your Following feed
• ⌘K Command center: Search stories, jump to channels and pages, or switch appearance from anywhere
• 👤 Profiles & follows: Public profiles with photos from Appwrite Avatars, karma and history. Follow people and their stories join your Following feed
• 💬 Messages: Direct messages and group chats with replies, reactions, read receipts, shared stories, mute and block
• 🌍 Global Reach: Multilingual support with AI-powered translations in 12+ languages
• 🔒 Privacy-First: Built on Appwrite's secure, self-hostable backend infrastructure
• 📱 Modern UX: An Apple-inspired, server-rendered interface with dark mode — the opposite of HN
• 🚀 Open Source: 100% open source, community-driven

Why Refetch?

While Hacker News has been the go-to platform for tech discussions for years, we believe there's room for innovation. Refetch brings:

• Better Content Discovery: AI algorithms that surface the most relevant tech news
• Enhanced User Experience: Modern, mobile-first design that works everywhere
• Community Empowerment: Open source codebase that anyone can contribute to
• Transparent Algorithms: Clear, documented ranking systems you can understand and improve

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🏗️ Architecture Overview

Web app

• TanStack Start — React 19 with streaming SSR, file-based routing (TanStack Router) and type-safe server functions. Data is prefetched in route loaders and cached with TanStack Query.
• Design system — Apple-inspired tokens and components on Tailwind CSS v4 and Radix primitives, in light and dark mode. See DESIGN.md.
• TypeScript end to end (strict).

Backend — Appwrite

• Tables DB — posts, comments, votes, daily_topics and topics, plus channels and channel_members for channels, profiles, user_follows and user_blocks for people, and conversations, conversation_members, messages and message_reactions for messages. The web app reads and writes them on the server with an API key, exactly as before (same tables, columns, counters and rate limits; posts gain an optional channel column).
• Authentication — email & password and Continue with Appwrite (Appwrite as an OAuth2 provider), run in the browser with the Appwrite web SDK. The browser then hands the server a short-lived JWT; the server verifies it with Appwrite and sets its own signed httpOnly cookie, so pages render signed-in on the first byte. The API key never creates sessions.
• Avatars — site favicons and profile photos (/avatars/photo: uploaded photo, OAuth picture, Gravatar, then initials).
• Functions — Scout, Enhancement, Algorithm, Topic stats and Readme (unchanged), plus Channels, in functions/.
• Sites — hosting with SSR.

AI-Powered Features

• Content Scout: Automatically discovers tech articles from 20+ sources
• Content Enhancement: AI analysis for quality scoring, categorization, summaries and optimization
• Smart Ranking: Multi-factor algorithm considering time, quality, and community engagement
• Multilingual Support: AI-powered translations and language detection

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📁 Project Structure

refetch/
├── src/
│   ├── routes/                # File-based routes (TanStack Router)
│   │   ├── _app/              # Feeds, channels, threads, submit (app shell)
│   │   ├── _auth/             # Sign in / sign up
│   │   ├── auth/callback.ts   # "Continue with Appwrite" OAuth callback
│   │   └── api/og/            # Social images (/api/og/thread/:id)
│   ├── api/                   # Server functions (RPC) called by the UI
│   ├── server/                # Server-only Appwrite code (*.server.ts)
│   ├── components/
│   │   ├── ui/                # Design system primitives
│   │   └── …                  # Feature components (feed, channels, thread, insights, layout, command center)
│   ├── lib/                   # Shared types, queries, utilities
│   └── styles/app.css         # Design tokens (Tailwind v4 @theme)
├── functions/                 # Appwrite Functions
│   ├── scout/                 # Content discovery automation
│   ├── enhancement/           # AI content analysis
│   ├── algorithm/             # Ranking algorithm
│   ├── topic-stats/           # Topic ranking (scheduled)
│   ├── channels/              # Pulls each channel's sources (scheduled)
│   └── readme/                # Syncs top posts into GitHub README
├── scripts/appwrite-setup.mjs # Creates/updates tables, indexes and function shells
├── scripts/channels.json      # Channel catalog: names, colors, keywords and sources
├── scripts/channel-icons/     # Channel icons (PNG), uploaded to Storage by appwrite:setup
├── extensions/                # Browser extension
├── public/                    # Static assets
└── DESIGN.md                  # Design system guide

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🚀 Getting Started

Prerequisites

• Node.js 22+
• pnpm (recommended) or npm
• An Appwrite project (Cloud or self-hosted)

Quick Start

1. Clone the repository

   git clone https://github.com/refetch-io/refetch.git
   cd refetch

2. Install dependencies

   pnpm install

3. Set up environment variables

   cp env.example .env

   Fill it in using Environment variables as a checklist.

4. Run the development server

   pnpm dev

5. Open your browser at http://localhost:3000

Scripts

Script	What it does
pnpm dev	Start the dev server on port 3000
pnpm build	Run appwrite:setup, then build the app (used by Appwrite Sites)
pnpm build:app	Build the app only
pnpm preview	Serve the production build locally
pnpm typecheck	Type-check the project
pnpm format	Format with Prettier (Tailwind classes sorted)
pnpm appwrite:setup	Create or update the database, tables, indexes and function shells

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Environment variables

Where to set them

• Web app (local / Appwrite Sites): .env locally, or the site's environment variables. Everything is read on the server — nothing is exposed to the browser except the Appwrite endpoint and project ID (needed for favicons).
• Appwrite Functions: set variables in the Console. Define shared keys once as global (project) variables so every function inherits them; use per-function variables only to override or add keys.
• The previous NEXT_PUBLIC_APPWRITE_ENDPOINT, NEXT_PUBLIC_APPWRITE_PROJECT_ID and NEXT_PUBLIC_BASE_URL names are still honored, so existing deployments keep working.

Table IDs use the legacy name *_COLLECTION_ID but refer to Appwrite Tables table IDs.

1. Appwrite connection (global)

Variable	Description
APPWRITE_ENDPOINT	REST API base (e.g. https://fra.cloud.appwrite.io/v1).
APPWRITE_PROJECT_ID	Project ID.
APPWRITE_API_KEY	Server API key with table/row access. Sign-in runs in the browser, so it doesn't need session scopes.
SESSION_SECRET	Optional. Signs the session cookie; derived from the API key when unset (rotating the key then signs everyone out).

2. Appwrite data IDs (global)

Variable	Description
APPWRITE_DATABASE_ID	Tables DB database ID.
APPWRITE_POSTS_COLLECTION_ID	posts table.
APPWRITE_COMMENTS_COLLECTION_ID	comments table.
APPWRITE_VOTES_COLLECTION_ID	votes table.
APPWRITE_KEYS_COLLECTION_ID	keys table (personal API keys; secrets encrypted).
APPWRITE_DAILY_TOPICS_COLLECTION_ID	daily_topics table (topic stats). Defaults to daily_topics.
APPWRITE_TOPICS_COLLECTION_ID	topics table (topic stats).
APPWRITE_CHANNELS_COLLECTION_ID	channels table. Defaults to channels.
APPWRITE_CHANNEL_MEMBERS_COLLECTION_ID	channel_members table (who joined what). Defaults to channel_members.
APPWRITE_CHANNEL_ICONS_BUCKET_ID	Public Storage bucket for channel icons (PNG). Defaults to channel-icons.
APPWRITE_PROFILES_COLLECTION_ID	profiles table (name, bio, website, who can message you). Defaults to profiles.
APPWRITE_FOLLOWS_COLLECTION_ID	user_follows table. Defaults to user_follows.
APPWRITE_BLOCKS_COLLECTION_ID	user_blocks table. Defaults to user_blocks.
APPWRITE_CONVERSATIONS_COLLECTION_ID	conversations table (direct and group). Defaults to conversations.
APPWRITE_CONVERSATION_MEMBERS_COLLECTION_ID	conversation_members table (read state, unread counts, mute). Defaults to conversation_members.
APPWRITE_MESSAGES_COLLECTION_ID	messages table. Defaults to messages.
APPWRITE_MESSAGE_REACTIONS_COLLECTION_ID	message_reactions table. Defaults to message_reactions.

3. Web app

Variable	Description
SITE_URL	Canonical public origin for SEO metadata and social cards (default https://refetch.io).
PLAUSIBLE_API_KEY	Optional. Powers “refetchers online” and the visitors chart.
APPWRITE_ANALYTICS_PROPERTY_ID	Optional. Appwrite Analytics property; pageviews and custom events are sent alongside Plausible, from production hosts only.
PLAUSIBLE_SITE_ID	Optional. Plausible site ID (e.g. refetch.io).

4. OpenAI (global for AI functions)

Variable	Description
OPENAI_API_KEY	Scout and Enhancement.
OPENAI_MODEL	OpenAI chat model for Scout and Enhancement; set as a global project variable (optional; default gpt-4o-mini).

5. Scout-only (sources)

Actor identity, LLM batching, scraping delays, and per-run limits are constants in functions/scout/index.js (not environment variables).

Variable	Description
SCOUT_TARGET_WEBSITES	Comma-separated site roots to crawl (can be very long).

6. Readme function only

Variable	Description
README_ORIGIN	Public origin for links in generated README.md (default https://refetch.io).
README_GITHUB_TOKEN	PAT with contents: write (or equivalent) to update README.md.
README_GITHUB_OWNER	Owner (user or org).
README_GITHUB_REPO	Repository name.
README_GITHUB_BRANCH	Branch to commit on (default main).

Bootstrap (scripts/appwrite-setup.mjs): npm run build runs this first; it uses the same Appwrite connection and data IDs to create or update the database, tables, indexes, and function shells (not deployments or function env).

Which parts need which groups

Part	Groups
Web app	1, 2, 3
Scout	1, 2, 4, 5
Enhancement	1, 2, 4
Algorithm	1, 2 (posts only)
Topic stats	1, 2 (incl. daily_topics + topics)
Channels	1, 2 (posts + channels)
Readme	1, 2 (posts only), 6

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🔐 Appwrite setup checklist

1. API key scopes — rows.read, rows.write, tables.read for the feeds, votes and comments. Sign-in happens in the browser, so no session scopes are needed.
2. Continue with Appwrite — in Auth → Settings → OAuth2 providers, enable Appwrite. The callback path is /auth/callback.
3. Platforms — add a Web platform for each hostname the site runs on (e.g. refetch.io, localhost) so OAuth redirects are accepted.
4. People & messages — pnpm appwrite:setup also creates the profile, follow, block and messaging tables. Profiles are written when people sign in (the server key doesn't need users.read); people who haven't signed in since are shown from their posts and comments. Messages refresh by polling (every few seconds in an open conversation).
5. Channels — pnpm appwrite:setup adds the posts.channel column, creates channels and channel_members, seeds the catalog from scripts/channels.json (member counts are kept), uploads each icon from scripts/channel-icons to the public channel-icons bucket and creates the scheduled Channels function. Deploy functions/channels to start the content flowing. Until the setup runs, the app serves the bundled catalog and matches stories by topic, but joining is unavailable.

☁️ Deploying to Appwrite Sites

Setting	Value
Framework	TanStack Start
Install command	pnpm install (or npm install)
Build command	npm run build
Output directory	./dist

Add the environment variables above to the site. npm run build runs appwrite:setup first; use build:app instead if you don't want the build to touch your Appwrite schema.

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🎨 Design system

Refetch's UI follows a small, Apple-inspired design system: semantic color tokens (light + dark), Poppins titles over the SF Pro type scale, inset grouped lists, frosted materials and spring-based motion — all on the original Refetch purple. Read DESIGN.md for guidelines. A live component catalog runs at /design in every environment; it is unlisted and not indexed.

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🤝 Contributing

Refetch was initially 100% vibe-coded, but we're excited to welcome contributions from humans too!

We believe in the power of community-driven development and welcome all types of contributions:

How to Contribute

1. Fork the repository
2. Create a feature branch

   git checkout -b feature/amazing-feature

3. Make your changes
4. Test thoroughly (pnpm typecheck && pnpm build:app)
5. Submit a pull request

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🔧 Appwrite Functions

Refetch uses several Appwrite serverless functions for automated content processing:

Scout Function

Automatically discovers high-quality tech content from 20+ sources including TechCrunch, The Verge, Ars Technica, and more.

Enhancement Function

AI-powered content analysis that generates metadata, quality scores, summaries and multilingual translations.

Algorithm Function

Sophisticated ranking algorithm that considers time decay, quality metrics, and community engagement.

Topic stats function

Scheduled job that aggregates post data into daily_topics and topics tables (see Environment variables). Until it runs, the web app computes “Trending today” live from the last 24 hours of posts.

Channels function

Runs every two hours (at :15). For each channel in channels, it reads the official feeds first (blogs, release notes, GitHub releases), falls back to community feeds (mostly DEV tags) when those have nothing new, and posts at most one fresh story per channel as Scout, tagged with that channel. Enhancement then scores and summarizes it like any other story. Stories also reach channels when their AI topics match a channel's keywords. To add a channel, add it to scripts/channels.json, drop a square PNG icon (256×256, full bleed; the app rounds the corners) at scripts/channel-icons/<id>.png and run pnpm appwrite:setup. You can also upload an icon to the channel-icons bucket in the Console and put its file ID in the channel's icon column.

Readme function

Commits an auto-generated “top posts” section into this repository’s README.md using the GitHub API.

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📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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Made with ❤️ for the Refetch community