diff --git a/extra/tokyo/alien/tcadb/summary.txt b/extra/tokyo/alien/tcadb/summary.txt
new file mode 100644
index 0000000000..1827298b35
--- /dev/null
+++ b/extra/tokyo/alien/tcadb/summary.txt
@@ -0,0 +1 @@
+Bindings for Tokyo Cabinet's Abstract database API
diff --git a/extra/tokyo/alien/tcbdb/summary.txt b/extra/tokyo/alien/tcbdb/summary.txt
new file mode 100644
index 0000000000..bc208423cf
--- /dev/null
+++ b/extra/tokyo/alien/tcbdb/summary.txt
@@ -0,0 +1 @@
+Bindings for Tokyo Cabinet's B+ Tree database API
diff --git a/extra/tokyo/alien/tcfdb/summary.txt b/extra/tokyo/alien/tcfdb/summary.txt
new file mode 100644
index 0000000000..44e056e5d1
--- /dev/null
+++ b/extra/tokyo/alien/tcfdb/summary.txt
@@ -0,0 +1 @@
+Bindings for Tokyo Cabinet's Fixed Length database API
diff --git a/extra/tokyo/alien/tchdb/summary.txt b/extra/tokyo/alien/tchdb/summary.txt
new file mode 100644
index 0000000000..d057f5729f
--- /dev/null
+++ b/extra/tokyo/alien/tchdb/summary.txt
@@ -0,0 +1 @@
+Bindings for Tokyo Cabinet's Hash database API
diff --git a/extra/tokyo/alien/tcrdb/summary.txt b/extra/tokyo/alien/tcrdb/summary.txt
new file mode 100644
index 0000000000..9e08bdac0a
--- /dev/null
+++ b/extra/tokyo/alien/tcrdb/summary.txt
@@ -0,0 +1 @@
+Bindings for Tokyo Tyrant's Remote database API
diff --git a/extra/tokyo/alien/tctdb/summary.txt b/extra/tokyo/alien/tctdb/summary.txt
new file mode 100644
index 0000000000..b492e95ee8
--- /dev/null
+++ b/extra/tokyo/alien/tctdb/summary.txt
@@ -0,0 +1 @@
+Bindings for Tokyo Cabinet's Table database API
diff --git a/extra/tokyo/alien/tcutil/summary.txt b/extra/tokyo/alien/tcutil/summary.txt
new file mode 100644
index 0000000000..7a01d13ef5
--- /dev/null
+++ b/extra/tokyo/alien/tcutil/summary.txt
@@ -0,0 +1 @@
+Bindings for Tokyo Cabinet's Utils API
diff --git a/extra/tokyo/cabinet/abstract/summary.txt b/extra/tokyo/cabinet/abstract/summary.txt
new file mode 100644
index 0000000000..a2a21dbe6e
--- /dev/null
+++ b/extra/tokyo/cabinet/abstract/summary.txt
@@ -0,0 +1 @@
+Higher level API for Tokyo Cabinet's Abstract database API. Implements the associative protocol.