uDig — GIS (Open Source)

uDig is an open-source GIS solution from Refractions Research. Compare it against 80 other GIS tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is uDig?

uDig is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under GIS and published by Refractions Research. Buyers typically evaluate uDig when they need a dependable GIS option and want to weigh the trade-offs between free, open-source and paid tools before committing.

• Category: GIS
• Brand: Refractions Research
• License: Open Source

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Frequently asked questions

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