diff --git a/cmd/captured/captured.go b/cmd/captured/captured.go
index ab8c488..4f3032a 100644
--- a/cmd/captured/captured.go
+++ b/cmd/captured/captured.go
@@ -1,3 +1,5 @@
+// Binary captured streams network packets to wireshark via SSH, replaying
+// buffered packets upon connection for retroactive debugging.
 package main
 
 import (
diff --git a/cmd/randomd/randomd.go b/cmd/randomd/randomd.go
index ac5dd67..8b4a385 100644
--- a/cmd/randomd/randomd.go
+++ b/cmd/randomd/randomd.go
@@ -1,3 +1,4 @@
+// Binary random carries entropy across restarts.
 package main
 
 import (
diff --git a/cmd/router7/main.go b/cmd/router7/main.go
deleted file mode 100644
index c538f67..0000000
--- a/cmd/router7/main.go
+++ /dev/null
@@ -1,17 +0,0 @@
-package main
-
-import (
-	"flag"
-	"log"
-)
-
-func logic() error {
-	return nil
-}
-
-func main() {
-	flag.Parse()
-	if err := logic(); err != nil {
-		log.Fatal(err)
-	}
-}
diff --git a/internal/dns/dns.go b/internal/dns/dns.go
index 621f709..e19db7a 100644
--- a/internal/dns/dns.go
+++ b/internal/dns/dns.go
@@ -1,3 +1,4 @@
+// Package dns implements a DNS forwarder.
 package dns
 
 import (
diff --git a/internal/netconfig/netconfig.go b/internal/netconfig/netconfig.go
index f4826f2..02b1fa0 100644
--- a/internal/netconfig/netconfig.go
+++ b/internal/netconfig/netconfig.go
@@ -1,3 +1,4 @@
+// Package netconfig implements network configuration (interfaces, addresses, firewall rules, …).
 package netconfig
 
 import (
diff --git a/internal/notify/notify.go b/internal/notify/notify.go
index ae6c537..1673b49 100644
--- a/internal/notify/notify.go
+++ b/internal/notify/notify.go
@@ -1,3 +1,4 @@
+// Package notify implements sending signals (such as SIGUSR1) to processes.
 package notify
 
 import (