RSP is a retargetable language for writing portable Web applications. Web applications can be written once in RSP and then compiled, using the RSP compiler, to either ASP, JSP or PHP. The RSP language is syntactically similar to Java/JSP. It is strongly typed and pseudo object orientated. Its standard library contains functions and objects for common Web programming tasks and database abstraction.
Spring is a lightweight Java/J2EE application framework based on code published in "Expert One-on-One J2EE Design and Development" by Rod Johnson. It includes powerful JavaBeans-based configuration management applying Inversion-of-Control principles, a generic abstraction layer for transaction management allowing for pluggable transaction managers, a JDBC abstraction layer, integration with Hibernate, JDO, Apache OJB, and iBATIS SQL Maps, AOP functionality, and a flexible MVC Web application framework with multiple view technologies. There is also a .NET port available.
PHP System Administration Toolkit is a toolkit/framework for the rapid development of system and network administration Web interfaces in PHP. It tries to take as much common work from the developer as possible, and provides object-oriented interfaces to many common services. It aims to make the applications built using it easily customizable, extensible, and maintainable.
WebPython is a Web-application development toolkit written in the Python programming language. It contains an object relational database layer, portable over MySQL and PostgreSQL; a document templating engine complete with simple built-in automation; and a mechanism to store Python objects in an SQL database, among other features.
OpenSubsystems is set of business components for Java applications such as security, search, inventory management, order processing, shopping, email and fax communication, document management, imaging, and others. The components can be used directly on top of Java Virtual Machine (POJO) or using various J2EE application servers (EJB). This is all without changing a single line of code.