A short request for a list of free, safe AI tools and websites for writing and running code and writing prompts.
I want to learn about various ai and websites which are free to use and knownly safe for making code to running code and writing professional prompt
我想了解各种可以免费使用且公认安全的AI和网站，用于编写代码、运行代码以及撰写专业的提示词（prompt）