Best Rextester Alternatives & Competitors in 2024

A tool for easy online testing and sharing of database problems and their solutions.

Open Source

Free Online SQL Editor

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

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Online SQL playground for testing and sharing SQL snippets. SQLite, MySQL and PostgreSQL.

An online tool for testing, sharing and collaborating on SQL snippets

An online tool for testing, demonstrating and sharing database commands and scripts.

SQLBolt provides a set of interactive lessons and exercises to help you learn SQL

LearnJavaOnline.org is a free website that teaches java and six other programming languages.

SQLZoo includes tutorials and reference to support people learning SQL. It features:

SQLize.online is a free online SQL environment for quickly running, experimenting with and sharing SQL code.

Learn the technical skills you need for the job you want. As leaders in online education and learning to code, we’ve taught over 45 million people using a tested curriculum and an interactive learning environment.

PHPize.online is a free online environment for quickly running, experimenting with and sharing PHP and SQL code.

Learn to code by helping nonprofits.

Build skills with courses, certificates, and degrees online from world-class universities and companies