Some sites suggested by @benbusby
* [DAVID](https://david.ncifcrf.gov/)
* [ENRICHR](https://cran.r-project.org/web/packages/enrichR/vignettes/enrichR.html), see also [Enrichr](https://amp.pharm.mssm.edu/Enrichr/)
* [JAX](http://www.informatics.jax.org/)