Other
OpenStreetMap
OSM is a free, open map database updated and maintained by a community of volunteers via open collaboration.
SuoPuhe
A collection of Finnish speech synthesis related free software - suopuhe originated in Universities of Helsinki and Joensuu
Voikko
Voikko is a morphological analyzer, spelling and grammar checker, hyphenator and collection of related linguistic data for Finnish language.
StreetComplete
StreetComplete finds missing map data in your vicinity and displays it on a map as quests.