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TwistPHP is an open-source web framework.

HTMLy is an open source Databaseless Blogging Platform or Flat-File Blog prioritizes simplicity and speed written in PHP. HTMLy can be referred to as Flat-File CMS either since it will also manage your content.

Grav is a Fast, Simple, and Flexible file-based Web-platform. Although Grav follows principles similar to other flat-file CMS platforms, it has a different design philosophy than most. The underlying architecture of Grav is built using well established and best-in-class technologies.

Python Hosting on Linux Servers

Chyrp is a blogging engine designed to be very lightweight while retaining functionality. It is powered by PHP and has very powerful theme and extension engines, so you can personalize it however you want.

Dotclear is an open-source web publishing software created in 2002 by Olivier Meunier. A one man's project at first, Dotclear soon gathered a team comprising different personalities with various backgrounds.

Cannon.js is an open source JavaScript 3D physics engine.

Google Web Toolkit, or GWT Web Toolkit, is an open source set of tools that allows web developers to create and maintain complex JavaScript front-end applications in Java.

Java Hosting packages on Linux servers.

JSP Hosting on Linux Servers.

Hippo CMS is an open-source, dual licensed, Content Management System.

dotCMS is an open source content management system (CMS) written in Java for managing content and content driven sites and applications.

SmartClient is set of mobile and cross-browser HTML5 UI components combined with a Java-based Ajax framework, created by Isomorphic Software to build business web applications.

Ametys is a free and open source content management system (CMS) written in Java.

Private JVM hosting with pre-installed Tomcat server.

Tomcat Hosting on Linux Servers.