#8 Jetty

Value in the Market - $106,000

Jetty provides an HTTP server, HTTP client, and javax.servlet container. These components are open source and available for commercial use and distribution. Jetty is used in a wide variety of projects and products. It can be embedded in devices, tools, frameworks, application servers, and clusters. In short, Jetty is a way to host web sites and web apps. It's particularly good for cloud apps that might need to support thousands of users all accessing the app at the same instant.

Google helped Jetty get popular when it used it for its App Engine cloud computing service.

#7 Mongo DB

Value in the Market - $108,000

Mongo DB is an open source document-oriented database system developed and supported by 10gen. It is part of the NoSQL family of database systems. Instead of storing data in tables as is done in a "classical" relational database, MongoDB stores structured data as JSON-like documents with dynamic schemas (MongoDB calls the format BSON), making the integration of data in certain types of applications easier and faster. These features of easy accessibility and speed of Mongo DB makes it popular and wanted.

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