A computing platform or digital platform or software platform is an environment in which a piece of software is executed. It may be the hardware or the operating system (OS), even a web browser and associated application programming interfaces, or other underlying software, as long as the program code is executed with it. Computing platforms have different abstraction levels, including a computer architecture, an OS, or runtime libraries. A computing platform is the stage on which computer programs can run.
A platform can be seen both as a constraint on the software development process, in that different platforms provide different functionality and restrictions; and as an assistant to the development process, in that they provide low-level functionality ready-made. For example, an OS may be a platform that abstracts the underlying differences in hardware and provides a generic command for saving files or accessing the network.
Platforms may also include:
- Hardware alone, in the case of small embedded systems. Embedded systems can access hardware directly, without an OS; this is referred to as running on "bare metal".
- A browser in the case of web-based software. The browser itself runs on a hardware+OS platform, but this is not relevant to software running within the browser.
- An application, such as a spreadsheet or word processor, which hosts software written in an application-specific scripting language, such as an Excel macro. This can be extended to writing fully-fledged applications with the Microsoft Office suite as a platform.
- Software frameworks that provide ready-made functionality.
- Cloud computing and Platform as a Service. Extending the idea of a software framework, these allow application developers to build software out of components that are hosted not by the developer, but by the provider, with internet communication linking them together. The social networking sites Twitter and Facebook are also considered development platforms.
- A virtual machine (VM) such as the Java virtual machine or .NET CLR. Applications are compiled into a format similar to machine code, known as bytecode, which is then executed by the VM.
- A virtualized version of a complete system, including virtualized hardware, OS, software, and storage. These allow, for instance, a typical Windows program to run on what is physically a Mac.
Some architectures have multiple layers, with each layer acting as a platform to the one above it. In general, a component only has to be adapted to the layer immediately beneath it. For instance, a Java program has to be written to use the Java virtual machine (JVM) and associated libraries as a platform but does not have to be adapted to run for the Windows, Linux or Macintosh OS platforms. However, the JVM, the layer beneath the application, does have to be built separately for each OS.
Operating system examples
Desktop, laptop, server
- AmigaOS, AmigaOS 4
- Unix and Unix-like
- IBM i
- Microsoft Windows
- Classic Mac OS - discontinued in 2011
- Midrange computers with their custom operating systems
- Mainframe computers with their custom operating systems
- Bada - discontinued in 2013
- BlackBerry OS - discontinued in 2013
- BlackBerry 10 - discontinued in 2022
- Embedded Linux
- Fire OS
- Firefox OS - discontinued in 2016
- HarmonyOS on Huawei smartphones models and Huawei MatePad tablets
- Newton OS on Newton devices from Apple
- Palm OS - discontinued in 2011
- Symbian - discontinued in 2012
- Sailfish OS
- Ubuntu Touch
- Windows Mobile - discontinued in 2010
- Windows Phone - discontinued in 2017
- Binary Runtime Environment for Wireless (BREW)
- Cocoa Touch
- .NET Framework
- Java ME
- Java SE
- Java EE
- JavaFX Mobile
- Microsoft XNA
- Mozilla Prism, XUL and XULRunner
- Mozilla WebExtensions API is modeled after Google Chrome's API. Thus Firefox extensions are now largely compatible with their Chrome counterparts.
- Web platform
- Oracle Database
- SAP NetWeaver
- Universal Windows Platform
- HMS Core
- ARM architecture based devices
- IBM PC compatible systems
- IBM System p and IBM Power Systems computers
- IBM z/Architecture mainframes
- CP/M computers based on the S-100 bus, maybe the earliest microcomputer platform
- Video game consoles, any variety (PlayStation, Xbox, Nintendo)
- 3DO Interactive Multiplayer, that was licensed to manufacturers
- Apple Pippin, a multimedia player platform for video game console development
- Supercomputer architectures
- "What I Talk About When I Talk About Platforms". martinfowler.com. https://martinfowler.com/articles/talk-about-platforms.html.
- "platform". Free On-line Dictionary of Computing
- Andrew Binstock (July 2, 2012). "Google's Redefinition of the Browser As Platform". http://www.drdobbs.com/web-development/googles-redefinition-of-the-browser-as-p/240003086?itc=edit_stub.
- "Microsoft Office as a Platform for Software + Services". http://msdn.microsoft.com/en-us/library/bb906062.aspx.
- "What Is PAAS?". http://www.interoute.com/what-paas.
- "Twitter Development Platform - Twitter Developers". https://dev.twitter.com/.
- "Facebook Development Platform Launches...". August 15, 2006. https://www.facebook.com/notes/2207512130.
- "Platform independence in Java's Byte Code". https://stackoverflow.com/questions/17101796/platform-independence-in-javas-byte-code.
- "The Future of Developing Firefox Add-ons" (in en-US). https://blog.mozilla.org/addons/2015/08/21/the-future-of-developing-firefox-add-ons/.
- "Upcoming Changes in Compatibility Features" (in en-US). https://blog.mozilla.org/addons/2017/08/10/upcoming-changes-compatibility/.
- "How to enable legacy extensions in Firefox 57 - gHacks Tech News". 12 August 2017. https://www.ghacks.net/2017/08/12/how-to-enable-legacy-extensions-in-firefox-57/.
- "Porting a Google Chrome extension". Mozilla. https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Porting_a_Google_Chrome_extension.
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