diff --git a/BagOfIdeas/GoodToHaveLinks.md b/BagOfIdeas/GoodToHaveLinks.md
index 846cbbdfed3..cc1e40463b1 100644
--- a/BagOfIdeas/GoodToHaveLinks.md
+++ b/BagOfIdeas/GoodToHaveLinks.md
@@ -13,4 +13,11 @@ can also be found in the official tcc documentation.
 3. https://briancallahan.net/blog/20210215.html
 This list gives me some ideas. How about trying to bring compatibility
 with all those compilers? Would it be helpful to be able to compile the
-kernel with all those compilers?
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+kernel with all those compilers?
+
+4 [The state of toolchains in OpenBSD](https://www.cambus.net/the-state-of-toolchains-in-openbsd/)
+Quite clear that OpenBSD focused up until now on GCC and clang/LLVM.
+Basically this is all the state of the art I need for this project.
+However I will also probe the state of the art for other operating
+systems too, mainly other BSDs, Linux, Plan 9, and other obscure
+operating systems.
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