Ctool Commonly Used Developer Tools is a free Chrome add-on developed by baiy. This add-on offers a wide range of developer tools and functionalities. With Ctool, developers can easily perform tasks such as hash encryption and decryption, code conversion, timestamp manipulation, QR code generation, IP query, code formatting, Unicode conversion, regular expression matching, and much more.

One of the key features of Ctool is its offline usability. Developers can use the add-on without an internet connection, making it convenient for on-the-go coding. The add-on supports various encryption algorithms, including AES, DES, RC4, Rabbit, TripleDes, sm2, and sm4. It also provides useful tools for working with URLs, timestamps, barcodes, and converting Chinese characters to pinyin.

Ctool also offers features like random character generation, text difference comparison, crontab validation, unit conversion, JSON formatting and validation, UUID generation, and much more. The add-on provides a comprehensive set of tools that can greatly simplify the development process.

Please note that the IP query and websocket debugging features are not available offline. However, developers can provide feedback and suggest new tools through the GitHub repository.

Overall, Ctool Commonly Used Developer Tools is a versatile and convenient add-on for developers, offering a wide range of tools and functionalities for various coding tasks.