Raspberry Pi Azure IoT Online Simulator

quicktype generates types and helper code for reading JSON in C#, Swift, TypeScript, Go, Objective-C, C++ and more. Customize online with advanced options, or download a command-line tool.  VSCode Plugin

RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). 

Small SEO Tools is one of the biggest free SEO tools provider. All tools are of premium quality and totally free.  

Online tool to help designers build color palettes with combinations that conform with accessibility standards

 Uttool provides set of free online tools to make your life,
Json Parser,
Html Encode,
Unix Time Converter,
Url Escape,
HTML to JS,
Calculator,
Unit Converter,
Stop Watch,
Countdown Timer,
Photo Editor,
Color Picker,
Email Address,
Base64 Encode Decode,
AES Encryption,
DES Encryption,
RC4 Encryption,
Rabbit Encryption,
Triple DES Encryption,
Md5 Hash,
SHA1-1 Hash,
SHA-256 Hash,
SHA-384 Hash,
SHA-512 Hash,
Regular Expression Tester,
Guid Generator,
RegEx String Generator,
String Generator,