diff --git a/doc/src/SUMMARY.md b/doc/src/SUMMARY.md
index 1c8766cc0..a1e8d44ef 100644
--- a/doc/src/SUMMARY.md
+++ b/doc/src/SUMMARY.md
@@ -18,4 +18,5 @@
   - [nimbleparse](nimbleparse.md)
   - [cfgrammar](cfgrammar.md)
   - [lrtable](lrtable.md)
+  - [third party](thirdparty.md)
 - [Other Rust parsing tools](othertools.md)
diff --git a/doc/src/thirdparty.md b/doc/src/thirdparty.md
new file mode 100644
index 000000000..94e52789f
--- /dev/null
+++ b/doc/src/thirdparty.md
@@ -0,0 +1,7 @@
+# Libraries and tools developed by third parties
+
+Besides using grmtools to develop parsers. The following items use grmtools
+to extend or augment the functionality which may be useful to people developing
+parsers with grmtools.
+
+- [nimbleparse_lsp](https://github.com/ratmice/nimbleparse_lsp)