OpenHistoricalMap (also spelled Open Historical Map and abbreviated OHM) is an online collaborative mapping project developing a historical map of the world using OpenStreetMap technology and processes.[4][5][6] Whereas OpenStreetMap only includes data about the present day and deletes data as it becomes outdated, OpenHistoricalMap welcomes historical data and preserves multiple copies of a feature as it changes over time.[7][8] The OpenStreetMap community views OpenHistoricalMap as an outlet for keeping outdated names out of OpenStreetMap, where they could cause misunderstanding.[9]
^"config/locales at staging". OpenHistoricalMap/ohm-website. Archived from the original on February 13, 2022. Retrieved February 13, 2022 – via GitHub.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
^R. Ferreira, Karine; Ferla, Luis; R. de Queiroz, Gilberto; L. Vijaykumar, Nandamudi; A. Noronha, Carlos; M. Mariano, Rodrigo; Taveira, Denis; Sansigolo, Gabriel; Guarnieri, Orlando; Rogers, Thomas; Lesser, Jeffrey; Page, Michael; Atique, Fernando; Musa, Daniela; Y. Santos, Janaina; S. Morais, Diego; R. Miyasaka, Cristiane; R. de Almeida, Cintia; G. M. do Nascimento, Luanna; A. Diniz, Jaine; C. dos Santos, Monaliza (2018-12-30). "A Platform for Collaborative Historical Research based on Volunteered Geographical Information". Journal of Information and Data Management. 9 (3). Sociedade Brasileira de Computacao - SB: 293. doi:10.5753/jidm.2018.2046. ISSN2178-7107. Two examples of OSM applications that focus on historical data sets are HistOSM1 and OpenHistorical ... OpenHistoricalMap is an effort to use the OSM infrastructure as a foundation for creating a universal, detailed, and historical map of the world.
^Yan Minghui (April 20, 2022). "共享地圖OpenStreetMap爆改地名大戰 山友憂慮增加意外" [The shared map OpenStreetMap is overrun with changed place names, climbers worry about increase in accidents]. HK01 (in Traditional Chinese). Retrieved April 20, 2022.