Free
Uptime Kuma
Open SourceUptime & Alerting · Monitoring & Observability
Fancy open-source self-hosted uptime monitoring with status pages.
uptimestatus-pageself-hosted
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Uptime & Alerting · Monitoring & Observability
Fancy open-source self-hosted uptime monitoring with status pages.
Uptime & Alerting · Monitoring & Observability
Popular hosted uptime monitoring with 50 free monitors.
Converters · Encoding & Decoding
Encode and decode URLs and query strings online.
SQL Tools
In-depth guide to SQL indexing and performance tuning.
Passwords & IDs · Security
Generate UUIDs/GUIDs in bulk, including v4 and v7 versions.
Package Managers · Development Environment
Extremely fast Python package and project manager from Astral.
AI Coding Assistants · AI for Developers
Vercel's generative UI builder for React and shadcn/ui components.
NoSQL · Database
Community-driven Redis fork under the Linux Foundation (trending).
PaaS & Edge · Cloud Platforms
Frontend cloud optimized for Next.js with edge functions and previews.
Full-stack Boilerplates · Project Starters
Official and community starter templates for Next.js, AI apps, commerce and more — one-click deploy to Vercel.
Web3 Libraries · Web3 & Blockchain
Modern TypeScript interface for Ethereum — low-level primitives, ABI typing and multi-chain actions.
Editors & IDEs · Development Environment
The classic modal text editor, available everywhere.
Reference & Standards · Security
Scan files, URLs and domains with 70+ antivirus engines.
CSV · Data Formats
Terminal spreadsheet for exploring CSV, JSON, Excel and more.
Editors & IDEs · Development Environment
Microsoft's full IDE for .NET, C++ and Windows development.
Data Viz & Charts · Frontend
Airbnb's collection of low-level React visualization primitives combining D3 math with React components.
Build & Lint · Frontend
Next-generation frontend build tooling with instant dev server.
Documentation Generators · PDF & Documents
Vite-powered static site generator focused on docs.
Unit & Component · Testing
Fast, Vite-native unit test framework with Jest-compatible API.
Models & LLM APIs · AI for Developers
High-throughput, memory-efficient LLM inference and serving engine.
Frameworks · Frontend
Progressive JavaScript framework for building user interfaces.
Browser DevTools · Development Environment
Official Vue extension — component inspection, Pinia/Vuex state, router and performance profiling.
UI Libraries · Frontend
The most popular Material Design component framework for Vue with a huge component set and grid system.
VPS & Bare Metal · Cloud Platforms
Global cloud with simple compute, storage and Kubernetes offerings.