Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.

Taste Skill gives your AI agent good taste. Open-source skill files that stop AI from generating generic, boring frontends.

Studying the technology, business, and politics of APIs since 2010.

Generate barcodes online for free — supports Code 128, EAN-13, UPC-A, QR Code, Data Matrix, and 20+ formats. Bulk generation, instant download as PNG/SVG/JPG. No signup required.

The Morse Code Translator instantly translates Morse code to text and text to Morse code.

Discover curated UI Skills for design engineers, including accessibility, motion, frontend craft, and interface quality guides with copy-ready install commands.

DigitalPlat builds and operates open-access systems for domains, DNS, and developer infrastructure used by hundreds of thousands of users globally.

DCDeploy is the perfect platform for developers and small teams looking to build and launch applications on high-performance bare metal infrastructure without the hassle of server management. Our intuitive dashboard, automatic scaling, and transparent pricing…

Ship faster with 100+ stable, free public APIs — social, weather, encryption, image, network, and translation. JSON in, JSON out, no signup, no rate-limit wall.

Explore, copy, and remix thousands of high-quality React components published to the 21st.dev Community by designers and developers.

专为开发者设计的分布式文件存储方案，提供高性能、高可靠的文件管理服务。

Paste HTML and see it live in seconds. Dark mode, two-way code-to-element highlighting, and one-click formatting — free, no signup.

使用 Intlayer 提升应用可扩展性：一款由 AI 驱动的国际化 (i18n) 与内容管理解决方案。适用于 React、Next.js、Vue、Svelte 等。

使用免费的星盘地图计算器，获取精准的行星线、搬迁分析和即时地图解读。无需注册，无广告：仅提供AI增强的精准星盘地图分析。

在线裁剪 GIF，支持圆形和方形，浏览器内调整缩放、位置并导出动图。

Double click test tool to detect mouse double click issues. Run a mouse double click test to check faults, click accuracy, and button reliability.

Learn DevOps with hands-on tutorials, interactive simulators, quizzes, and weekly news. 250+ free resources.

Tigris is globally distributed, S3-compatible object storage with zero egress fees. Scales infinitely, works across any cloud, and provides instant access to your data worldwide.

Get a disposable PolarDB-X database in one API call. No sign-up, no config. Built for AI agents, MCP servers, and RAG prototypes.

Apache Doris is an open-source, real-time analytics database built on MPP architecture. Run OLAP queries, lakehouse analytics, and hybrid search at petabyte scale on a single engine.