ycombinator
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🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23
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Jul 18, 2025 - TypeScript
🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓
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Jul 18, 2025 - TypeScript
Build and generate PDF using React 📄 UI kit for PDFs and print documents. Simple, reusable components and templates to create great invoices, docs, brochures. Use your favorite front-end framework React to build your next PDF.
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Sep 12, 2024 - TypeScript
🌿 It's Hacker News in your terminal
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Jul 14, 2025 - Go
🔒 Enterprise-grade API gateway that helps you monitor and impose cost or rate limits per API key. Get fine-grained access control and monitoring per user, application, or environment. Supports OpenAI, Azure OpenAI, Anthropic, vLLM, and open-source LLMs.
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Jan 5, 2025 - Go
📚 Download the full collection of Paul Graham essays in EPUB, PDF & Markdown for easy reading.
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Jul 15, 2025 - Python
PostgreSQL vector database extension for building AI applications
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Dec 12, 2024 - Rust
✨ Hacker News, but refined — Interface tweaks and features to make the HN experience better
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Oct 4, 2023 - JavaScript
The iPhone version of News/YC, a Hacker News reader and interactive iOS application.
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Aug 4, 2015 - Swift
EdgeChains.js is Full-Stack GenAI library. Front-end, backend, apis, prompt management, distributed computing. All core prompts & chains are managed declaratively in jsonnet (and not hidden in classes)
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Feb 1, 2025 - JavaScript
Curated collection of AI dev tools from YC companies, aiming to serve as a reliable starting point for LLM/ML developers
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Aug 17, 2023
The Brain Of Your B2B SaaS. A better way to unify your customers' data and get meaningful insights out of the box. Built on Next.js, Ruby on Rails, Tailwind, Shadcn, and more. Backed by Y Combinator - YC W23
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May 16, 2024 - Ruby
Modular, open source LLMOps stack that separates concerns: LiteLLM unifies LLM APIs, manages routing and cost controls, and ensures high-availability, while Langfuse focuses on detailed observability, prompt versioning, and performance evaluations.
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Feb 15, 2025
Periodically fetches and displays top stories from HackerNews.
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Jun 26, 2024 - TypeScript
Lambda Calculus things implemented on Python
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Sep 5, 2019 - Python
Create WOW Moments. Create superfans.
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Apr 26, 2019
The first developer-oriented document platform. Generate, host and track PDFs with a single API, beautifully.
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May 21, 2024 - Python
✌️Y Combinator directory scraper
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Jun 3, 2024 - Python
1000个创业Idea，来自ycombinator，一行一个创业思路;1000 entrepreneurial ideas from ycombinator, one entrepreneurial idea per line.
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Dec 16, 2024
Gets your upvoted posts from Hacker News and imports them to raindrop.io
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Aug 1, 2023 - Python
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