實用工具
Excalidraw — Collaborative whiteboarding made easy
Excalidraw is a virtual collaborative whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them.
Carbon
Carbon is the easiest way to create and share beautiful images of your source code.
Crontab.guru - The cron schedule expression generator
An easy to use editor for crontab schedules.
Interactive visual CIDR and IP range calculator
Instantly compute and visualize CIDR subnets, IP ranges and masks. Free online tool for accurate network design, planning and IT education.
JSON Web Tokens - jwt.io
JSON Web Token (JWT) is a compact URL-safe means of representing claims to be transferred between two parties. The claims in a JWT are encoded as a JSON object that is digitally signed using JSON Web Signature (JWS).