Climatiq Emission Tracking API - Climatiq makes it easy to automate emission calculations with a REST API.
Wren - Offset your carbon footprint by saving rainforests
Greenifs.ai - Stay compliant with green marketing regulations using AI
Website Carbon Calculator - Find out the how much CO2 your website emits
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Neutral - Offset your carbon emissions, right from your shopping cart