The Generic Mapping Tools (GMT) are widely used across the Earth, Ocean, and Planetary sciences and beyond. A diverse community uses GMT to process data, generate publication-quality illustrations, automate workflows, and make animations. Scientific journals, posters at meetings, Wikipedia pages, and many more publications display illustrations made by GMT. And the best part: it is free, open source software licensed under the LGPL.
Got questions? Join the friendly GMT Community Forum to get help and connect with other users and developers.
Want to use GMT in MATLAB/Octave, Julia, or Python? Check out the GMT interfaces!
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GMT has been used from UNIX and Windows command lines for decades. More recently, GMT has been rebuilt as an Application Programming Interface (API) and can now be accessed via wrapper libraries from MATLAB/Octave, Julia, and Python, as well from custom programs written in C or C++.
See all the projects the team is working on in the Ecosystem page.
Want to see the code? All development happens through GitHub in our GenericMappingTools account.
Napa Sans is a clean, geometric sans-serif typeface with a modern yet friendly appearance, suitable for branding, UI, editorial design, and signage. It features open counters, moderate x‑height, and a balanced weight range that works well at display and text sizes.
Honest answer: No, you should not waste time hunting for an illegal free version of Napa Sans. The legitimate free trial is perfectly fine for exploring the typeface’s aesthetics, but for any real project, you have two ethical choices:
The time you spend searching shady websites for a pirated Napa Sans could be better spent learning how to style a high-quality open-source font. In 90% of design cases, your audience will never know the difference—but your computer’s security and your legal peace of mind will thank you.
Let’s talk about the dark side of the query. Hundreds of websites claim to offer "Napa Sans free download" with a single click. Do not do it. Here is why: