Otto by HashiCorp is described as 'Otto knows how to develop and deploy any application on any cloud platform, all controlled with a single consistent workflow to maximize the productivity of you and your team' and is an app in the OS & Utilities category. There are four alternatives to Otto by HashiCorp for a variety of platforms, including Mac, Windows, Linux, BSD and FreeBSD. The best alternative is Docker, which is both free and Open Source. Other great apps like Otto by HashiCorp are XAMPP (Free, Open Source), Vagrant (Free, Open Source) and MAMP (Freemium).
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
MAMP installs a local server environment in a matter of seconds on your computer. It comes free of charge, and is easily installed. MAMP will not compromise any existing Apache installation already running on your system.