If you're using Go, I maintain Go ports of Readability[0] and Trafilatura[1]. They're actively maintained, and for Trafilatura, the extraction performance is comparable to the Python version.
Is Mozilla's Readability really abandoned? The latest release (v0.6.0) is just 2 months ago, and its maintainer (Gijs) is pretty active on responding issues.
[0]: https://wiki.freecad.org/Std_VarSet