H5P website, to create easy interactives that can plug in to most websites and LMS packages Free, Open source

QGIS mapping software with MMQGIS geocoding plugin Free, Open source

Openstreetmap Free, Open source

Google Maps API and this tutorial on how to batch geocode locations using Python (GitHub link)

Zotero reference manager Free, Open source

Itch.io, independant game platform that hosts a vast array of games (lot's of IF)

Quest, a tool for IF creation that has both online and desktop functionality, only publishable to the Quest website free, open source

Twine, a tool for IF creation that supports a variety of play types and creation modes (online, desktop app), with good cookbook for instructions free, open source

Bitsy, a tool for creating “bitsy” graphic style games, often used for visual novels and IF free, open source

Ink & Inky, Inkle's narrative scripting language and editor for IF Free, Open source

Yarnspinner, Australian narrative design software, only supports Unity at the moment Free, Open source

Internet Archive of classic gamesFree, Open source

ARTstor, images of artwork within the worlds collections institutionsFree

Alternate Reality Games [ARGs]

Azgaar's Fantasy Map GeneratorFree, Open source

gamecomponents.eu, EU supported site with both free and paid serious game components/mechanics

Streets of my town, health related game/s for Australian communities, co-design strategies

Games for Change, online game directory and game jams