Platforms and services that sit around your agents — hosting, auth, payments, observability, data, search, and deployment. These are the pieces you integrate into a stack, not finished indie apps. Browse the community's picks, ranked by real use.
Open-source OpenTelemetry observability platform with traces, logs, metrics, service maps, session replay, and an AI agent MCP server, for backend and platform teams.
Best for Teams wanting unified traces, logs, metrics, service maps, and Kubernetes monitoring in a single OTel-native tool78+ animated shadcn/ui components plus 100+ AI agent patterns, distributed as copy-paste source, free, open-source, and zero npm lock-in.
Best for React and Tailwind teams already using shadcn/ui who want animated, accessible components without npm package overheadFree, MIT-licensed React loading animation registry for shadcn-style projects, copy-paste spinners, skeletons, and motion primitives.
Best for Teams building React and Tailwind CSS products that already use shadcn/ui and need consistent pending states fastZero-dependency, SQLite-backed AI memory layer for agents, MCP-ready, local-first, and benchmarked against BEAM and LongMemEval.
Best for Builders who want persistent agent memory with zero infrastructure, no Postgres, Docker, or SaaS requiredVisual RAG pipeline that retrieves over screenshot tiles instead of parsed text, preserving tables, charts, and layout for more accurate document search.
Best for Builders doing RAG over documents where tables, charts, or layout carry meaning that HTML parsing silently dropsFree browser tool and Python package that converts images and videos into 13 art styles (ASCII, pixel art, voxel, halftone, LEGO, glitch, and more) with real-time effects and up to 4x export resolution.
Best for Designers creating stylized posters or visual assets using ASCII, pixel art, voxel, mosaic, halftone, glitch, or LEGO stylesjscpd is an open-source copy/paste detector for 223+ languages, with a Rust-powered v5 engine that is 24-37x faster and AI-ready out of the box.
Best for Teams wanting fast, language-agnostic duplicate code detection across large monorepos or mixed-format codebasesOpen-source memory and context engine for stateful AI agents, works with any model, framework, or architecture.
Best for Builders who need agents to model how users and other agents change over time, not just retrieve past messagesOpen-source Next.js + shadcn/ui layout templates for developers, dashboards, productivity apps, and more, with a Pro tier.
Best for Next.js developers who need a production-grade app shell without days of component scaffoldingNVIDIA's open-source security scanner for AI agent skills, detects prompt injection, supply chain attacks, and 66 other vulnerability patterns before you install.
Best for Teams auditing AI agent skills before installation in Claude Code, Codex CLI, or Gemini CLI environmentsOpen-source React component kit for agentic AI apps: streaming chat, tool calls, reasoning, citations, and more, SDK-agnostic and fully owned by your codebase.
Best for React teams building agentic or chat interfaces who want streaming-ready components without writing them from scratchshadcn/ui, open-source, copy-owned UI components for developers building their own design system with full code control.
Best for Teams building a custom design system who need full ownership of component source codeOpen-source brand SVG icon library with 6,149+ typed, tree-shakeable icons for developers and designers.
Best for Apps that display third-party brand logos and want a single versioned npm dependencyStreamline Pixel Icons: a 442k-icon library with 34 families, Figma plugin, and VS Code extension for designers and developers who need consistent, large-scale icon sets.
Best for Teams building large design systems that need cohesive icon coverage across many concepts and stylesAwwwards: the industry benchmark for web design excellence, offering awards, inspiration galleries, a professional directory, courses, and a curated marketplace for designers and developers.
Best for Designers and frontend developers seeking a credible benchmark for current web design excellenceFree repo scanner that checks GitHub and Bitbucket projects for malware, credential stealers, and crypto scams before you run their code.
Best for Developers vetting unfamiliar GitHub or Bitbucket repos before cloning or running them locallyOpen-source file-format loaders for geospatial, tabular, and 3D data, with worker-thread and streaming support for big-data JS apps.
Best for Apps handling multiple geospatial or 3D formats (shapefiles, glTF, Arrow, CSVs, point clouds) through one unified APIFree, open-source shadcn-style registry of production-ready AI agent recipes for developers who want full code ownership with zero config.
Best for Teams that want full code ownership over agent logic without being locked into an opaque runtime dependencyAuto-generated, pixel-perfect skeleton screens for React, Vue, Svelte, Angular, and React Native, no manual placeholders needed.
Best for Teams tired of skeleton screens drifting out of sync after UI changesWebGL glass-effect library for the web, apply realistic refraction, blur, and lighting to any HTML element with a single async init call.
Best for Portfolio heroes, product landing pages, and OS-style UI shells needing physically accurate glass effectsOpen-source autonomous AI pentester for web apps and APIs, analyzes your source code and runs real exploits, for developers and security engineers.
Best for Teams shipping code daily who need on-demand, proof-driven pentesting between annual engagementsOpen-source React loading animation library with 55+ dot-matrix loaders for shadcn/Tailwind projects, install in one command.
Best for React and Tailwind CSS teams who want polished, on-brand loading animations without building from scratch18 production-ready CSS transitions for web apps, plus an AI agent skill that applies them directly inside your project.
Best for Builders using AI coding tools like Cursor, Claude Code, or Copilot who want consistent, production-ready CSS transitionsOpen-source toolkit for Spec-Driven Development with AI coding agents, structured specs, plans, and tasks instead of vibe coding.
Best for Teams using AI coding agents on projects where correctness and reliability matter more than speed of first outputOpen-source Node.js SMTP email verification library for developers who need programmatic, multi-layer address validation with detailed reason codes.
Best for Builders who need in-process email verification without a third-party SaaS dependencyOpenAI's open-source agent orchestrator that converts project tasks into autonomous, isolated coding runs, so teams manage work, not coding agents.
Best for Engineering teams with mature test and lint harnesses who want autonomous task-to-PR pipelinesAnimated WebGL liquid-metal shader for React buttons and chips, one component, three presets, zero layout shifts.
Best for React devs who want a real-time WebGL metal ring on CTA buttons without a custom shader setupDependency-free gallery of math-driven loading animations (rose, Lissajous, cardioid, and more) with formulas and copyable code for UI builders.
Best for Builders who want visually distinctive loading animations grounded in named mathematical curvesOpen-source glassmorphism component library for shadcn/ui, 21 Apple-inspired glass UI components for Next.js and React, installed via the shadcn registry.
Best for Teams building Next.js or React apps that already use shadcn/ui and want a coherent glass aesthetic fastOpen-source AI code reviewer with bring-your-own-model, custom rule enforcement, and zero LLM markup for engineering teams.
Best for Teams with custom coding standards, domain rules, or naming conventions that generic AI reviewers missOpen Design is the open-source, local-first Claude Design alternative for builders who want agent-native design, prototypes, decks, and video, without a vendor lock-in.
Best for Developers who want to generate design artifacts from a brief using their existing coding agentAnatomia, CLI harness that gives AI coding agents a verifiable pipeline and proof chain, not just prompts. MIT-licensed, works with Claude Code, Codex, and more.
Type-check TypeScript and JavaScript code fences in Markdown and MDX docs against your real project API, in editor, CLI, and CI.
Best for Teams using AI agents to write or update docs, where hallucinated API names and option keys are a real riskBetter Upload: MIT-licensed React library for direct-to-S3 file uploads with minimal setup, presigned URLs, and drag-and-drop UI components.
Best for React apps needing direct-to-S3 file uploads without proxying bytes through the API serverNot everything useful lives inside your editor. This topic covers the platforms and services you plug into a build: tracing and evals, vector and data layers, agent runtimes, payments, auth, and the hosts that ship your work. They're the supporting cast that turns a clever prototype into something you can run and trust in production.
Some are open source and self-hostable; others are commercial SaaS with free tiers. The right pick depends on where the gap in your stack is — instrumentation, retrieval, deployment — and how much you want to operate yourself. Open each entry for pricing, hosting options, and how it fits alongside the tools you already run. Shipped indie products and vibe-coded builds live under Apps instead.
Standalone AI platforms and services that aren't an editor, plugin, MCP server, or a shipped indie app — hosting, auth, payments, observability, evals, data and search, orchestration, inference, and deployment utilities you integrate into a stack.
Platforms & Services are infrastructure you plug into your setup. Apps are finished products builders ship — vibe-coded demos, indie SaaS, and personal tools, including launches from communities like Builders Work Club.
Plugins extend a tool you already run from inside it; platforms and services stand on their own and you connect to them. A plugin lives in your editor; an entry here is its own platform or service.
Both. Some are open source and self-hostable, others are commercial SaaS, and many offer a free tier. Open an entry for licensing, hosting options, and pricing.
By community upvotes, one per account, with new additions under the New tab. Every listing is human-reviewed before it appears.