diff --git a/journal/2021-05-06.md b/journal/2021-05-06.md
index b7b292475..ee929e4c8 100644
--- a/journal/2021-05-06.md
+++ b/journal/2021-05-06.md
@@ -3,4 +3,5 @@
 - [[2021-05-19]]
   - [[presentation]]
 - [[hamnox]] called me back to [[ctzn]] and I'm grateful.
-- [[paulbucks]] 
\ No newline at end of file
+- [[paulbucks]] 
+- [[sidebery]]
\ No newline at end of file
diff --git a/sidebery.md b/sidebery.md
new file mode 100644
index 000000000..94ce13db7
--- /dev/null
+++ b/sidebery.md
@@ -0,0 +1,7 @@
+# sidebery
+
+- a [[web extension]]
+  - for [[firefox]]
+  - like [[tree style tabs]] but IMHO better
+  - [[go]] https://addons.mozilla.org/en-US/firefox/addon/sidebery/
+