SQLCrab
SQLCrab is a website where you can practice SQL database queries right in your web browser. It uses a real Postgres database engine so you can learn.
About SQLCrab
SQLCrab helps students and professionals practice real SQL interview questions in an easy way. You do not need to install servers or set up any difficult tools on your computer. Everything runs directly in your internet browser.
Similar to SQLCrab
Bloom
An adaptive AI tutor that turns topics or your materials into courses, lessons, and answers tailored to how you learn.
PracticeNetworking
Master networking with interactive, hands-on practice directly in your browser. Solve real terminal challenges, debug routes, and build core IT skills
Wordy
Learn languages with real movie and TV show clips.
PDFKing
Free online PDF tools to merge, compress, convert, edit, sign, and manage documents—no signup, watermarks, or daily limits.
