http://jsonplaceholder.typicode.com - JSONPlaceholder is a free online REST API that you can use whenever you need some fake data.
It's great for tutorials, testing new libraries, sharing code examples, ...

https://motrix.app - BUILD WITH ELECTRON, VUE.JS AND ELEMENT

6 Dicas Para Estudar PHP Do Jeito Certo - Profissionais TI
https://www.profissionaisti.com.br/2015/05/6-dicas-para-comecar-a-estudar-php-do-jeito-certo/

https://standardjs.com JavaScript style guide, linter, and formatter

RediSQL is a fast, in-memory, SQL engine. Based on Redis, it is easy to use, works with standard SQL, and can reach speeds of up to 130,000 inserts per second. Due to its speed and storage mode, it is effective in creating lightweight, temporary databases for testing. The code is stable, so RediSQL can be used as a main database with on-disk storage if desired. RediSQL has complete JSON support and is fully text-searchable. There is full documentation available and guides on using RediSQL on Python, Node.js, and Golang