Libgdx is being developed lovingly and not for profit by over 200 contributors across the globe. Some of them work on it in their free-time, others can make it part of their day job. All of them contribute their code under the very permissive Apache 2 license, which means you can use all our code in commercial and non-commercial projects without any strings or license fees attached.
Sadly, libgdx's infrastructure does not yet run on love. We currently have 2 Linodes and one Mac Mini which are responsible for serving you the website, the forum, the blog, the nightly and release builds and which are also sharing the load of building nightlies on every code change via our Jenkins instance. All of this costs us roughly 45$ per month.
The libgdx core team is kindly asking for minimal support to cover these monthly costs. Any excess donations will be used to buy development and test devices for core contributors
You can support us on a monthly basis via Patreon, or in form of a one-time donation via Paypal