The Uniform Server is not available for Linux but there are a few alternatives that runs on Linux with similar functionality. The best Linux alternative is XAMPP, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to The Uniform Server and four of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to The Uniform Server are AMPPS (Free), Devilbox (Free, Open Source) and FoxServ (Free, Open Source).
XAMPP is a completely free, easy to install Apache distribution containing MariaDB, PHP, and Perl. The XAMPP open source package has been set up to be incredibly easy to install and to use. XAMPP is free even for commercial uses