- Aalto University – Semantic Computing research group (technology)
- Ajapaik (technology)
- Albumit Auki! (content)
- Association of Cultural Heritage Education in Finland (co-development)
- Creative Commons Finland (research)
- Finnish Local Heritage Federation (co-development)
- Gallen-Kallela museum (content, co-development)
- Genealogical Society of Finland (co-development)
- Helsinki University – Cultural heritage (research)
- Helsinki University – Finnish and Nordic History (research)
- Helsinki University – HELDIG (research)
- ICARUS International Centre for Archival Research (co-development)
- Institute for the Languages of Finland (content)
- Kansalaismuisti (content, co-development)
- Language Bank of Finland – FIN-CLARIN (content)
- Lokalhistoriewiki – Norsk lokalhistorisk institutt – Nasjonalbiblioteket Norway (co-development)
- National Archives of Finland (content, co-development)
- National Board of Antiquities – Wiki Inventory for Living Heritage (content, co-development)
- National Land Survey – Georef (technology, content)
- National Library of Finland – Digitalia (content)
- National Library of Finland – Finna.fi (technology, content, co-development)
- Open Knowledge Finland (research)
- Pori Art Museum (co-development)
- South-Eastern Finland University of Applied Sciences Xamk (research, technology)
- Tilaushistoriakeskus (research)
- Turku University – Archaeology (research)
- Turku University Cultural Production and Landscape Studies (research)
- Uppsala University – Archives, Libraries and Museums (research)
- Wikimedia Finland (co-development)
- Yle Archives (content, co-development)
- Åbo Akademi (research)
The wiki for small history