Best Environment Tools to Use in 2026
Discover the best free and open-source environment tools. Curated list with alternatives and reviews.
Top Picks
BreezoMeter Pollen
Daily Forecast pollen conditions data for a specific location
Carbon Interface
API to calculate carbon (C02) emissions estimates for common C02 emitting activities
Climatiq
Calculate the environmental footprint created by a broad range of emission-generating activities
Cloverly
API calculates the impact of common carbon-intensive activities in real time
CO2 Offset
API calculates and validates the carbon footprint
Danish data service Energi
Open energy data from Energinet to society
More Great Options
GrünstromIndex
Green Power Index for Germany (Grünstromindex/GSI)
IQAir
Air quality and weather data
Luchtmeetnet
Predicted and actual air quality components for The Netherlands (RIVM)
National Grid ESO
Open data from Great Britain’s Electricity System Operator
OpenAQ
Open air quality data
PM2.5 Open Data Portal
Open low-cost PM2.5 sensor data
FAQ
Are these tools really free?
Yes! All tools listed on Craftisle are 100% free or have a generous free tier.
How do you choose the best tools?
We evaluate based on features, ease of use, community support, and update frequency.