Business directory

{{short description|Printed or web-based listing of businesses by category}}

[[File:PigotDirectory1839Kent.jpg|thumb|An example page from Pigot's 1839 directory of businesses in the counties of Kent, Surrey and Sussex in England.]] thumb|page=68|right|An example page from a directory for the city of Macon, 1866 A '''business directory''' is a website or printed listing of information which lists businesses within niche-based categories. Businesses can be categorized by niche, location, activity, or size. Business may be compiled either manually or through an automated online search software. Online yellow pages are a type of business directory, as is the traditional phone book.<ref>{{cite web |title=Yellow Pages |url=https://www.britannica.com/topic/Yellow-Pages |website=Encyclopedia Britannica |access-date=2025-11-25}}</ref>

Some directories include a section for user reviews, comments, and feedback. Business directories in the past would take a printed format but have recently been upgraded to websites due to the advent of the internet.<ref name="GovUK">{{cite web |title=Online small business directory shut down by court |url=https://www.gov.uk/government/news/online-small-business-directory-shut-down-by-court |publisher=The Insolvency Service |website=GOV.UK |date=2018-05-30 |access-date=2019-03-20}}</ref>

Many business directories offer complimentary listings in addition to the premium options. There are many business directories and some of these have moved over to the internet and away from printed format. Whilst not being search engines, business directories often have a search function, enabling users to search businesses by Zip Code, country, state, area or city.<ref>{{cite web |last=Southern |first=Matt |title=Web Directories vs Search Engines: What's the Difference? |url=https://www.searchenginejournal.com/web-directories-vs-search-engines/352826/ |publisher=Search Engine Journal |date=2020-04-14 |access-date=2025-11-25}}</ref>

== History ==

Previous business directories may have been called 'dictionaries', guides or handbooks.

Historians have linked the development of trade directories such as Kelly's trade directory, Bradshaw's railway timetables and guides and Mitchell's Press Directories to the growth of 'rational, scientific inquiry' and statistics in the nineteenth century.<ref>{{cite journal |last1=Brake |first1=Laurel |title=Nineteenth-Century Newspaper Press Directories: The National Gallery of the British Press |journal=Victorian Periodicals Review |date=2015 |volume=48 |issue=4 |pages=569–590 |doi=10.1353/vpr.2015.0055 |url=https://muse.jhu.edu/article/607310 |ref=Brake|url-access=subscription }}</ref>

=== Origins and pre-digital era === The origins of the business directory can be traced to the mid-19th-century professional directories, such as ''The London and Provincial Medical Directory'' (founded 1847)<ref>[https://wellcomecollection.org/works/ruezs27u "The London and provincial medical directory. Date: 1847–1869"], wellcomecollection.org, accessed 30 October 2023</ref> and Crockford's Clerical Directory (established 1858). On February 21, 1878, the New Haven District Telephone Company in Connecticut issued the world's first telephone directory. It was a single piece of cardboard listing 50 names without any associated telephone numbers, as operators manually connected calls.<ref>{{cite web |last=Eschner |first=Kat |title=The First Telephone Book Had Fifty Listings and No Numbers |url=https://www.smithsonianmag.com/smart-news/first-telephone-book-had-fifty-listings-and-no-numbers-180962186/ |publisher=Smithsonian Magazine |date=2017-02-21 |access-date=2025-11-25}}</ref>

The concept of classifying businesses by category, now standard in all directories, emerged in the 1880s. In 1883, a printer in Cheyenne, Wyoming, ran out of white paper and used yellow stock instead, creating the first visual distinction for business listings. Reuben H. Donnelley later formalized this in 1886 by establishing the first official "Yellow Pages" in Chicago, creating a taxonomy of business categories (e.g., locksmiths, plumbers) that would influence data structures for the next century.<ref name="TurnKeyHistory">{{cite web |last=TurnKey Directories |title=The History of the Underlying Technologies Behind Internet Business Directories and Maps |url=https://turnkeydirectories.com/history-of-the-underlying-technologies-behind-internet-business-directories-and-maps/ |website=TurnKey Directories |date=21 November 2025 |access-date=2025-11-25}}</ref>

Before the World Wide Web, the French Minitel system (launched in 1982) served as the first successful mass-market electronic directory. It allowed millions of users to search for businesses and residents via a computer terminal, precursors to the online directories that would follow a decade later.<ref>{{cite news |title=Minitel: The rise and fall of the France-wide web |url=https://www.bbc.com/news/magazine-18610692 |publisher=BBC News |date=2012-06-27 |access-date=2025-11-25}}</ref>

=== The Internet directory era (1994–2004) === The transition to the internet began with hand-curated directories. Yahoo! Directory, founded in 1994, and the Open Directory Project (DMOZ), founded in 1998, relied on human editors to categorize websites into hierarchical tree structures.<ref>{{cite web |last=Sullivan |first=Danny |title=RIP DMOZ: The Open Directory Project is closing |url=https://searchengineland.com/rip-dmoz-open-directory-project-closing-270291 |publisher=Search Engine Land |date=2017-02-28 |access-date=2025-11-25}}</ref>

A major technological hurdle during this period was merging business directories with digital maps. In 1995, Zip2 (co-founded by Elon Musk) attempted to place businesses on vector maps. Since digital maps at the time only understood street segments rather than specific street numbers, Zip2 engineers implemented '''linear interpolation'''. This mathematical method estimated a business's geographic coordinate by calculating its percentage distance along a known address range (e.g., placing "123 Main St" approximately 23% along the 100–200 block segment).<ref name="TurnKeyHistory" /><ref>{{cite news |last=Chafkin |first=Max |title=Entrepreneur of the Year: Elon Musk |url=https://www.bloomberg.com/news/articles/2007-12-01/entrepreneur-of-the-year-elon-musk |newspaper=Bloomberg |date=2007-12-01 |access-date=2025-11-25}}</ref>

Early online mapping services like MapQuest (launched in 1996) democratized access to routing but suffered from '''server-side rendering'''. Every time a user panned or zoomed the map, the browser had to send a request to the server, which would generate a new custom raster image (GIF or JPEG) and reload the entire page, resulting in a slow and disjointed user experience.<ref name="TurnKeyHistory" />

=== Modern local search and mobile (2005–present) === The modern era of business directories began in 2005 with the launch of Google Maps, which utilized '''AJAX''' (Asynchronous JavaScript and XML) and a '''quadtree tiling''' system. This allowed browsers to fetch pre-rendered map tiles in the background, enabling the seamless, draggable "slippy map" that became the industry standard.<ref name="TurnKeyHistory" /><ref>{{cite web |last=O'Reilly |first=Tim |title=What Is Web 2.0 |url=https://www.oreilly.com/pub/a/web2/archive/what-is-web-20.html |website=O'Reilly Media |date=2005-09-30 |access-date=2025-11-25}}</ref>

Simultaneously, platforms like Yelp (founded in 2004) shifted the focus of directories from static contact details to user-generated reviews and social proof.<ref>{{cite news |title=Yelp: The reviewing site that loves to be hated |url=https://www.bbc.com/news/business-28776472 |publisher=BBC News |date=2014-08-15 |access-date=2025-11-25}}</ref> The introduction of smartphones in 2007 further transformed the technology from geocoding (finding coordinates for an address) to '''reverse geocoding''' (identifying the business at a user's GPS coordinates), effectively turning the business directory into a real-time navigation tool.<ref name="TurnKeyHistory" /><ref>{{cite news |last=Graff |first=Garrett M. |title=How Google Maps Held Its Ground |url=https://www.wired.com/story/google-maps-15th-anniversary/ |newspaper=Wired |date=2020-02-07 |access-date=2025-11-25}}</ref>

== Formats == Business directories can be in either hard copy or in digital format. Ease of use and distribution means that many trade directories have a digital version.

==References== {{Reflist}}

==External links== * {{Commons category-inline}}

{{DEFAULTSORT:Business Directory}} Category:Business Category:Directories