|This section does not cite any references or sources. (April 2012)|
A testbed (also commonly spelled as test bed in research publications) is a platform for experimentation of large development projects. Testbeds allow for rigorous, transparent, and replicable testing of scientific theories, computational tools, and new technologies.
The term is used across many disciplines to describe a development environment that is shielded from the hazards of testing in a live or production environment. It is a method of testing a particular module (function, class, or library) in an isolated fashion. May be implemented similar to a sandbox, but not necessarily for the purposes of security. A testbed is used as a proof of concept or when a new module is tested apart from the program/system it will later be added to. A skeleton framework is implemented around the module so that the module behaves as if already part of the larger program.
A typical testbed could include software, hardware, and networking components. In software development, the specified hardware and software environment can be set up as a testbed for the application under test[dubious ]. In this context, a testbed is also known as the test environment.
The Arena web browser was created by the World Wide Web Consortium (W3C) and CERN for testing HTML3, Cascading Style Sheets (CSS), Portable Network Graphics (PNG) and the libwww. Arena was replaced by Amaya to test new web standards 
- QingLong, Lu. "The Arena Web Browser". Yggdrasil Computing. Archived from the original on 22 February 2003. Retrieved 6 June 2010.
- "Web working group - Minutes "Navigation, services and interoperability" session". World Wide Web Working group. Retrieved 9 June 2010.
- "History of the Web". Oxford Brookes University. 2002. Retrieved 10 July 2010.
- Nielsen, Henrik Frystyk (4 May 1998). "WWW - The Libwww Line Mode Browser". World Wide Web Consortium. Retrieved 9 June 2010.
- "libwww". ROS. Retrieved 2 June 2010.
- PlanetLab Europe, the European portion of the publicly available PlanetLab testbed
- CMU's eRulemaking Testbed
- US National Science Foundation GENI - Global Environment for Network Innovations Initiative
- Helsinki Testbed (meteorology)
- Collaborative Adaptive Sensing of the Atmosphere (CASA) IP1 test bed
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