acunote.com — free resource available at acunote.com
asana.com — free resource available at asana.com
Backlog — free resource available at backlog.com
Basecamp — free resource available at basecamp.com
bitrix24.com — free resource available at bitrix24.com
cacoo.com — free resource available at cacoo.com
clickup.com — free resource available at clickup.com
Clockify — free resource available at clockify.me
Cloudcraft — free resource available at cloudcraft.co
Confluence — free resource available at atlassian.com
Crosswork — free resource available at crosswork.app
diagrams.net — free resource available at app.diagrams.net
easyretro.io — free resource available at easyretro.io
freedcamp.com — free resource available at freedcamp.com
GForge — free resource available at gforge.com
gleek.io — free resource available at gleek.io