Developer Tools.

Anthropic's production-grade LLM API — optimized for reasoning, coding, and long-context tasks.

GPT-4o, embeddings, and function calling. The industry baseline for LLM integration.

Framework for composable LLM application chains — agents, retrievers, and tool use.

Run large language models locally with a simple CLI and REST API. Zero cloud cost.

Visual workflow automation with 400+ integrations. Self-hostable and extendable with code nodes.

Ultra-fast LLM inference API. Llama, Gemma, and Mixtral at 800+ tok/s. Best for latency-sensitive features.

Open-source LLM inference with fine-tuning. 100+ models including Llama 3 and Mistral at competitive pricing.

Run ML models via API. Stable Diffusion, Whisper, and thousands of community models with versioned deployments.

Fast all-in-one JavaScript runtime, bundler, test runner, and package manager.

Edge SQLite database globally distributed. SQL with low-latency reads at the network edge.

Zero-config cloud deployments for any language. Push code, Railway handles the rest.

Deploy Docker containers at the edge in 30+ regions. Persistent volumes and Postgres included.

Secrets management and environment variable sync across all environments and team members.

Deploy web apps anywhere with Docker. Zero-downtime deploys via SSH. From Basecamp — no Kubernetes required.

Open-source, self-hosted Heroku/Netlify alternative. Deploy any app from Git to your VPS in minutes.

High-performance build system for JS/TS monorepos. Incremental builds, remote caching, and parallel task execution.

Open-source Firebase alternative built on PostgreSQL. Auth, storage, realtime, and edge functions.

Serverless Redis and Kafka. Pay per request. Ideal for rate limiting, queues, and pub/sub.

Developer-first transactional email API built for modern stacks. React email templates included.

Payments infrastructure for the internet — subscriptions, invoicing, and payout automation.

Serverless Postgres with branching. Scale to zero, instant start, and full compatibility with Prisma/Drizzle.

MySQL-compatible serverless database with non-blocking schema changes, branching workflow, and horizontal sharding.

Background jobs for modern TypeScript apps. Long-running tasks, cron jobs, and event-driven workflows with retries.

Error tracking and performance monitoring. Catch regressions before users report them.

Open-source product analytics. Session recording, feature flags, and A/B testing in one SDK.

Logs and observability at any scale. Query petabytes of data with APL in seconds.

Uptime monitoring, log management, and incident management. 30s check intervals, status pages, and on-call escalation.

Vendor-neutral observability framework. Traces, metrics, and logs with a single instrumentation SDK.

End-to-end testing for modern web apps. Cross-browser, parallel, and with built-in auto-wait for reliable assertions.

Vite-native unit testing with Jest compatibility. Blazing fast, ESM-first, and co-located with your source files.

API mocking via Service Workers. Intercept requests at the network layer — no more wrapping fetch in test helpers.

UI testing utilities that test behavior over implementation. Works with React, Vue, Angular, and plain DOM.

Generate massive amounts of realistic fake data for tests and seeds. Locale-aware, TypeScript-first.

Developer-centric load testing tool. Script in JavaScript, run locally or in the cloud, get actionable reports.

Unstyled, accessible component primitives. Dialog, Dropdown, Popover — ARIA-compliant with zero visual opinions.

Copy-paste component library built on Radix + Tailwind. Own your code — not a npm dependency.

Accessible, unstyled UI components from Tailwind Labs. React and Vue. Pairs perfectly with TailwindCSS.

Full-featured React component library with 100+ components. Built-in dark mode, form management, and hooks.

Unstyled, accessible components powered by state machines (XState/Zag). Framework-agnostic primitives.

Drawer component for React. Smooth snap points, drag-to-close, and zero layout shift. Built by emilkowalski.

Primitive and flexible state management for React. Atoms composable like useState, no extra boilerplate.

Lightweight, unopinionated state management. Minimal API, no providers needed, and excellent DevTools support.

Powerful async state management for data fetching, caching, synchronization, and background updates.

State machines and statecharts for complex UI flows. Formal modeling prevents impossible states.

Proxy-based state management. Mutate state directly, subscriptions are automatic via Proxy traps.

Extremely fast reactive state with fine-grained observability. 2x smaller bundle than Zustand, persists out of the box.

NextAuth.js v5 — authentication for the web. 60+ OAuth providers, database sessions, and edge-compatible JWT strategy.

Session-based auth library. Handles sessions, adapters, and OAuth. No magic — just TypeScript primitives.

Framework-agnostic auth with built-in rate limiting, 2FA, teams, and passkeys. Production-ready from day one.

Complete user management: auth, MFA, OAuth, orgs, and RBAC. React components + backend SDK. Drop-in user system.

Enterprise-grade auth with generous free tier. SSO, MFA, permissions, and B2B organizations built in.

Open-source Clerk alternative. Auth, team management, and API keys. Self-host or managed cloud.

S3-compatible object storage with zero egress fees. Workers integration for edge transformations.

Industry-standard object storage. Virtually unlimited scale, lifecycle policies, and rich SDK support.

File uploads for Next.js. Type-safe server + client SDK. Handles presigned URLs, validation, and CDN delivery.

File uploads with built-in image transformations, CDN, virus scanning, and widget UI.

Self-hosted S3-compatible object storage. Run it on Kubernetes or bare metal with high-throughput performance.

Globally distributed object storage built on Fly.io. S3 API, edge-native, zero egress.

Lightning-fast search engine. Typo-tolerance, facets, synonyms. Self-host in minutes or use managed cloud.

Open-source instant search. Powered by C++, sub-50ms response times, vector search, and geo-filtering.

Hosted search with instant results, typo tolerance, and rich filtering out of the box.

Distributed search and analytics engine. Full-text, structured, and vector search at scale.

Fully in-memory full-text, vector, and hybrid search engine. Works in Node, Bun, Deno, and the browser.

Premium queue and job scheduler for Node.js. Built on Redis — priority queues, rate limiting, and flow producers.

Background jobs, scheduled functions, and multi-step workflows. Zero infrastructure, built-in retries and observability.

HTTP-based message queue from Upstash. Publish messages, schedule jobs, and fan-out to multiple consumers.

Workflow orchestration platform. Write workflows as code with automatic retries, versioning, and state persistence.

Open-source feature flags and A/B testing. Bayesian stats, SDKs for every stack, self-hostable.

Open-source feature flag service. Segment users, schedule rollouts, and manage remote config. Self-host or cloud.

Enterprise feature management platform. Targeting rules, progressive rollouts, experimentation, and approvals.

Open-source feature toggle service. Strategy-based targeting, variant experiments, and rich SDK ecosystem.

CNCF standard for feature flagging. Vendor-neutral SDK that works with any provider — avoid lock-in.