Every website with posted family trees has good work, and not so good. My experience with Geneanet has generally been good. I have found some well sourced trees, and many without. Of those without that I was interested in, I looked for the original sources, and had excellent results in verifying the data. This is not to say you should take the information at face value, you should absolutely verify it.
Geneanet also also a lot of primary source material that is available for paid subscribers. However, with a free account you can post a family tree, and you have access to all the reporting and charting functions, both of which are quite good.
Geneanet was originally focused on French genealogy, considering its founders are French, and it was headquartered in Paris.
Geneanet was founded in 1996, and currently has 3-4 million members. There are both free and paid (“Premium”) accounts. The Premium Edition (for search primary records) is available without cost through the Family History Centers.
In 2021 Geneanet was acquired by Ancestry. If you have an Ancestry account you will occasionally see Geneanet family tree references.
For European families Geneanet is worth looking at, but the reach is certainly global. For example, I have found some very useful, and valid, Mexican genealogy.