[nimmer]

Here's a comparison with Nim. In my experience Nim is one of the fastest both in terms of execution and compile time.

https://github.com/timotheecour/D_vs_nim

[Symmetry]

I see a lot of comparisons between unlike languages (Go and Rust for example) but it looks like D and Nim really are competing for the same niche.

[pjmlp]

And C# as well, via AOT compilation and the memory management improvements in 7.x versions.