diff --git a/go.mod b/go.mod
index 4b69b5d..aa7a135 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
-module github.com/brtholomy/um
+module github.com/brtholomy/um/go
 
 go 1.25.4
diff --git a/next/last.go b/next/last.go
new file mode 100644
index 0000000..70537dc
--- /dev/null
+++ b/next/last.go
@@ -0,0 +1,14 @@
+package next
+
+import (
+	"fmt"
+	"os/exec"
+)
+
+func Last() {
+	ls, err := exec.Command("ls").Output()
+	if err != nil {
+		fmt.Print(err)
+	}
+	fmt.Printf("ls\n%s\n", string(ls))
+}
diff --git a/next/next.go b/next/next.go
new file mode 100644
index 0000000..ef9d2a1
--- /dev/null
+++ b/next/next.go
@@ -0,0 +1,8 @@
+package next
+
+import "fmt"
+
+func Next(args []string) {
+	fmt.Println("next")
+	fmt.Println(args)
+}
diff --git a/sort/sort.go b/sort/sort.go
new file mode 100644
index 0000000..c6809af
--- /dev/null
+++ b/sort/sort.go
@@ -0,0 +1,10 @@
+package sort
+
+import (
+	"fmt"
+)
+
+func Sort(args []string) {
+	fmt.Println("sort")
+	fmt.Println(args)
+}
diff --git a/tag/tag.go b/tag/tag.go
new file mode 100644
index 0000000..8e9d857
--- /dev/null
+++ b/tag/tag.go
@@ -0,0 +1,10 @@
+package tag
+
+import (
+	"fmt"
+)
+
+func Tag(args []string) {
+	fmt.Println("tag")
+	fmt.Println(args)
+}
diff --git a/um.go b/um.go
index 99824d8..8697154 100644
--- a/um.go
+++ b/um.go
@@ -5,6 +5,10 @@ import (
 	"fmt"
 	"os"
 	"strings"
+
+	nextpkg "github.com/brtholomy/um/go/next"
+	sortpkg "github.com/brtholomy/um/go/sort"
+	tagpkg "github.com/brtholomy/um/go/tag"
 )
 
 type Subcommand string
@@ -62,16 +66,20 @@ func main() {
 
 	switch cmd {
 	case next:
-		fmt.Printf("args: %#v\n", args)
+		nextpkg.Next(args)
+	case last:
+		nextpkg.Last()
 	case tag:
+		// TODO: move flag defs to the package?
 		tagFlags.Parse(prependFlagToArgs(args, query))
-		fmt.Println(tag)
+		tagpkg.Tag(args)
 		fmt.Printf("query: %#v\n", *tagQuery)
 		fmt.Printf("invert: %#v\n", *tagInvert)
 		fmt.Printf("args: %#v\n", tagFlags.Args())
 		tagFlags.Usage()
 	case sort:
 		sortFlags.Parse(args)
+		sortpkg.Sort(args)
 		fmt.Println("subcmd sort")
 		fmt.Printf("key: %#v\n", *sortKey)
 		fmt.Printf("args: %#v\n", sortFlags.Args())