Open format
From Wikipedia, the free encyclopedia
An open format is a published specification for storing digital data, usually maintained by a non-proprietary standards organization, and free of legal restrictions on use. For example, an open format must be implementable by both proprietary and free/open source software, using the typical licenses used by each. In contrast to open formats, proprietary formats are controlled and defined by private interests. Open formats are a subset of open standards.
The primary goal of open formats is to guarantee long-term access to data without current or future uncertainty with regard to legal rights or technical specification. A common secondary goal of open formats is to enable competition, instead of allowing a vendor's control over a proprietary format to inhibit use of competing products. Governments have increasingly shown an interest in open format issues.
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[edit] Free/open source software and open formats
The relationship between open formats and free/open source software is frequently misunderstood. Many proprietary software products readily use open formats, and free/open source software can often use proprietary formats. For example, HTML, the familiar open format markup language of the World Wide Web, creates the foundation for proprietary web browsers such as Microsoft's Internet Explorer as well as free/open source browsers such as Mozilla Firefox. Meanwhile, OpenOffice.org, the free/open source desktop office suite, can manipulate Microsoft's proprietary DOC format, as well as open formats such as OpenDocument. Finally, some companies have published specifications of their formats, making it possible to implement readers or writers for different platforms by different vendors, such as Adobe's PDF, and Microsoft's RTF. However, some proprietary formats are covered by some form of patent restrictions that may forbid free/open source software implementations (at least under certain licenses common for them, such as the GNU General Public License). According to some critics, such formats inhibit competition.
[edit] Examples of open formats
- OASIS OpenDocument Format for Office Applications (for office documents and suites)
- PDF (for documents)
- LaTeX (a document markup language)
- DVI (a page description language)
- TXT (an unformatted text format)
- HTML/XHTML (a markup language)
- OpenEXR (an image format)
- PNG (an image format)
- SVG (an image format)
- FLAC (an audio format)
- Ogg - Ogg Vorbis (an audio format) & Ogg Theora (a video format)
- XML (a markup language)
- 7z (data compression format)
[edit] See also
- Open system
- Open standard
- OpenDocument summary of the new OASIS Opendocument format (ODF)
- Vendor lock-in
- Embrace, extend and extinguish
- Network effect
- Free file format
- Free software
[edit] External links
- OpenOffice software implementing open formats
- OpenFormats
- Massachusetts Information Technology Division
- Free Knowledge requires Free Software and Free File Formats by Jimmy Wales
- EU report in favor of adopting open source software
