Tool to get genes in the neighbourhood of a particular gene

Question

[ThePlaintiff]

I'd be very grateful if someone could show me a tool that I could use to obtain genes that are close to a particular gene. The tool should answer the following questions for instance:

1. Show me 100 genes that are in close proximity to gene X?
2. Show me genes that are within 10MB of gene X.

NOTE: I know that I could manually obtain this information by reading directly from a genome viewer but I'm looking for programmatic solution e.g. a REST API.

[Ignasi]

Check out this post.

[Raony Guimarães]

Or this one: Python: Finding Gene Closest To A Given Location