- 2023-07-29: Berghapedia – Dutch-language free encyclopaedia about the former municipality of Bergh in the Netherlands
- 2023-07-19: Create Your Own Story – a big wiki about Creating Your Own Adventures
- 2023-07-19: Wikizilla – wiki encyclopedia of Godzilla, Gamera, King Kong, and other monsters
- 2023-07-13: Stephen King Wiki – site all about Stephen King
- 2023-07-04: Director – wiki site about the rich history of Adobe Director
- 2023-07-04: Backrooms Wiki – site about a strange reality called 'the Backrooms'
- 2023-07-04: James Bond Wiki (En.Wikia) – all about the world's most famous spy, James Bond, a.k.a. 007
- 2023-05-21: Bluepages – global historical directory of everyday places
- 2023-05-21: Scientia Practica – new wiki site about a diverse range of knowledge and insights
- 2023-04-12: Core Platform Team – Semantic MediaWiki powered site for logging bug-fixes by MediaWiki developers
- 2023-04-01: Calendar Wiki – wiki site about calendars
- 2023-04-01: WappenWiki – wiki site about coats of arms
- 2023-04-01: Ewiger Held Wiki – Michael Moorcock and his books about the Eternal Hero (German)
- 2023-04-01: Plan 9 Wiki – about the operating system
- 2023-03-25: Thermal-FluidsPedia – thermal fluids science and engineering
- 2023-03-25: AlchemistryWiki – energy calculations in chemistry
- 2023-03-18: Pornopedia (eo) – Esperanto-language version of Pornopedia
- 2023-03-18: Pornopedia (bn) – Bengali-language version of Pornopedia
- 2023-03-14: Earthdata Wiki – semi-private site from NASA about Earth data
- 2023-02-01: Stunts Wiki – about the racing game Stunts
- 2023-01-15: Miraheze Commons – media files repository for the Miraheze wiki farm
- 2023-01-15: Miraheze Meta – meta wiki site for the Miraheze wiki farm
- 2023-01-15: Liberapedia (Miraheze) – fork of the original Liberapedia
See earlier additions, specifically from: 2022 • 2021 • 2020 • 2019 • 2018 • 2017 • 2016 • 2015 • 2014 • 2013 • 2012 • 2011 • 2010 • 2009 • 2008 • 2007 • 2006
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