在线工具集锦

工具集合

• Free Online Tools For Developers
• 开源中国在线工具
• 在线工具

Web Online IDE

• Visual Studio Code for Web
• StackBlitz
• JSFiddle
• Online IDE Index

域名与IP

• IP地址查询
  • https://tool.lu/ip
  • https://www.ipip.net/ip.html
  • https://www.ip.cn
  • http://ip138.com
• DNSPerf
• ICANN WHOIS
• new gTLD Statistics
• Dig web interface
• DiG GUI
• CIDR Subnet Mask Cheat Sheet
• IP Address Lookup Tool
• WhatIsMyIP
• httpbin
  

网络安全与SSL

• Certificate Search
• Censys

网络测速

• https://www.ping.cn
• https://tools.pingdom.com
• http://www.speedtest.cn
• http://tool.chinaz.com/sitespeed

Web

• Reqres
• RequestBin
• Placeholder.com

JSON

• Free Online JSON Escape
• JSON Schema Validator
• JSON Placeholder

Date and Time

• Time Zone Converter
• Epoch Converter

CronExpression

• Cron Expression Descriptor
• Cron Maker
• crontab guru
• NCrontab
• CRON expressions for Azure Functions
• CronTrigger Tutorial (Quartz.NET)

二维码（QR Code）生成及识别

• QR Code Generator
• 开源中国在线生成二维码

Password Security

• LastPass Password Generator
• 1Password Password Generator
• Have I Been Pwned

正则表达式（Regular Expression）

• https://regexr.com
• http://regexstorm.net
  
• https://regex101.com

图像资源及处理

• Font Awesome Icons
• Iconfinder
• ICO Convert
• SVG to PNG (https://ezgif.com/svg-to-png)
• SVG to PNG (https://svgtopng.com)
• Favicon & App Icon Generator
• Compressor.io
• Emojipedia

在线图表制作

• draw.io
• Gliffy Editor
• Markdown Tables generator
• Word to Markdown Converter
• Word to HTML

在线协作

• Collabedit

字符集

• ASCII Codes Table
• HTML Codes Table
• HTML URL Encoding
• Unicode Lookup
• Unicode® character table
• Unicode Characters

C#.NET

• SharpLab
• .NET Fiddle

Compiler Service

• Closure Compiler Service