diff --git a/app/internal/input/key.go b/app/internal/input/key.go
index 13407e83..03b13476 100644
--- a/app/internal/input/key.go
+++ b/app/internal/input/key.go
@@ -3,10 +3,10 @@
 package input
 
 import (
-	"gioui.org/ui"
 	"gioui.org/internal/opconst"
 	"gioui.org/internal/ops"
-	"gioui.org/key"
+	"gioui.org/io/key"
+	"gioui.org/ui"
 )
 
 type TextInputState uint8
diff --git a/app/internal/input/pointer.go b/app/internal/input/pointer.go
index d5288a2c..b8442215 100644
--- a/app/internal/input/pointer.go
+++ b/app/internal/input/pointer.go
@@ -6,11 +6,11 @@ import (
 	"encoding/binary"
 	"image"
 
-	"gioui.org/ui"
 	"gioui.org/f32"
 	"gioui.org/internal/opconst"
 	"gioui.org/internal/ops"
-	"gioui.org/pointer"
+	"gioui.org/io/pointer"
+	"gioui.org/ui"
 )
 
 type pointerQueue struct {
diff --git a/app/internal/input/router.go b/app/internal/input/router.go
index f1c16549..7a4b8320 100644
--- a/app/internal/input/router.go
+++ b/app/internal/input/router.go
@@ -6,12 +6,12 @@ import (
 	"encoding/binary"
 	"time"
 
-	"gioui.org/ui"
 	"gioui.org/internal/opconst"
 	"gioui.org/internal/ops"
-	"gioui.org/key"
-	"gioui.org/pointer"
-	"gioui.org/system"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
+	"gioui.org/io/profile"
+	"gioui.org/ui"
 )
 
 // Router is a Queue implementation that routes events from
@@ -98,7 +98,7 @@ func (q *Router) collect() {
 	}
 }
 
-func (q *Router) AddProfile(e system.ProfileEvent) {
+func (q *Router) AddProfile(e profile.Event) {
 	for _, h := range q.profHandlers {
 		q.handlers.Add(h, e)
 	}
@@ -150,11 +150,11 @@ func (h *handlerEvents) Clear() {
 	}
 }
 
-func decodeProfileOp(d []byte, refs []interface{}) system.ProfileOp {
+func decodeProfileOp(d []byte, refs []interface{}) profile.Op {
 	if opconst.OpType(d[0]) != opconst.TypeProfile {
 		panic("invalid op")
 	}
-	return system.ProfileOp{
+	return profile.Op{
 		Key: refs[0].(ui.Key),
 	}
 }
diff --git a/app/os_android.go b/app/os_android.go
index b0b66cc5..e4c05685 100644
--- a/app/os_android.go
+++ b/app/os_android.go
@@ -24,10 +24,10 @@ import (
 	"time"
 	"unsafe"
 
-	"gioui.org/ui"
 	"gioui.org/f32"
-	"gioui.org/key"
-	"gioui.org/pointer"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
+	"gioui.org/ui"
 )
 
 type window struct {
diff --git a/app/os_ios.go b/app/os_ios.go
index e6b2b877..65f07906 100644
--- a/app/os_ios.go
+++ b/app/os_ios.go
@@ -22,10 +22,10 @@ import (
 	"sync/atomic"
 	"time"
 
-	"gioui.org/ui"
 	"gioui.org/f32"
-	"gioui.org/key"
-	"gioui.org/pointer"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
+	"gioui.org/ui"
 )
 
 type window struct {
diff --git a/app/os_js.go b/app/os_js.go
index e9b34159..68ab86d1 100644
--- a/app/os_js.go
+++ b/app/os_js.go
@@ -9,8 +9,8 @@ import (
 	"time"
 
 	"gioui.org/f32"
-	"gioui.org/key"
-	"gioui.org/pointer"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
 )
 
 type window struct {
diff --git a/app/os_macos.go b/app/os_macos.go
index 3761ad99..b541c436 100644
--- a/app/os_macos.go
+++ b/app/os_macos.go
@@ -20,8 +20,8 @@ import (
 	"unsafe"
 
 	"gioui.org/f32"
-	"gioui.org/key"
-	"gioui.org/pointer"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
 )
 
 func init() {
diff --git a/app/os_wayland.go b/app/os_wayland.go
index 8f4905db..bf3c17ae 100644
--- a/app/os_wayland.go
+++ b/app/os_wayland.go
@@ -18,8 +18,8 @@ import (
 
 	"gioui.org/f32"
 	"gioui.org/internal/fling"
-	"gioui.org/key"
-	"gioui.org/pointer"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
 	syscall "golang.org/x/sys/unix"
 )
 
diff --git a/app/os_windows.go b/app/os_windows.go
index 0e59dd4c..096fd98c 100644
--- a/app/os_windows.go
+++ b/app/os_windows.go
@@ -15,8 +15,8 @@ import (
 	syscall "golang.org/x/sys/windows"
 
 	"gioui.org/f32"
-	"gioui.org/key"
-	"gioui.org/pointer"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
 )
 
 var winMap = make(map[syscall.Handle]*window)
diff --git a/app/window.go b/app/window.go
index 523cedd4..79da79c5 100644
--- a/app/window.go
+++ b/app/window.go
@@ -8,10 +8,10 @@ import (
 	"image"
 	"time"
 
-	"gioui.org/ui"
 	"gioui.org/app/internal/gpu"
 	"gioui.org/app/internal/input"
-	"gioui.org/system"
+	"gioui.org/io/profile"
+	"gioui.org/ui"
 )
 
 // WindowOption configures a Window.
@@ -144,7 +144,7 @@ func (w *Window) draw(size image.Point, frame *ui.Ops) {
 	if w.queue.q.Profiling() {
 		q := 100 * time.Microsecond
 		timings := fmt.Sprintf("tot:%7s cpu:%7s %s", frameDur.Round(q), drawDur.Round(q), w.gpu.Timings())
-		w.queue.q.AddProfile(system.ProfileEvent{Timings: timings})
+		w.queue.q.AddProfile(profile.Event{Timings: timings})
 		w.setNextFrame(time.Time{})
 	}
 	if t, ok := w.queue.q.WakeupTime(); ok {
diff --git a/app/xkb_linux.go b/app/xkb_linux.go
index ca4d3017..7087b18c 100644
--- a/app/xkb_linux.go
+++ b/app/xkb_linux.go
@@ -22,7 +22,7 @@ import (
 	"unicode/utf8"
 	"unsafe"
 
-	"gioui.org/key"
+	"gioui.org/io/key"
 )
 
 type xkb struct {
diff --git a/gesture/gesture.go b/gesture/gesture.go
index cfae9d2e..1d6832c9 100644
--- a/gesture/gesture.go
+++ b/gesture/gesture.go
@@ -12,10 +12,10 @@ package gesture
 import (
 	"math"
 
-	"gioui.org/ui"
 	"gioui.org/f32"
 	"gioui.org/internal/fling"
-	"gioui.org/pointer"
+	"gioui.org/io/pointer"
+	"gioui.org/ui"
 )
 
 // Click detects click gestures in the form
diff --git a/key/key.go b/io/key/key.go
similarity index 100%
rename from key/key.go
rename to io/key/key.go
diff --git a/pointer/doc.go b/io/pointer/doc.go
similarity index 100%
rename from pointer/doc.go
rename to io/pointer/doc.go
diff --git a/pointer/pointer.go b/io/pointer/pointer.go
similarity index 100%
rename from pointer/pointer.go
rename to io/pointer/pointer.go
diff --git a/io/profile/profile.go b/io/profile/profile.go
new file mode 100644
index 00000000..fc06ebb4
--- /dev/null
+++ b/io/profile/profile.go
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: Unlicense OR MIT
+
+// Package profiles provides access to rendering
+// profiles.
+package profile
+
+import (
+	"gioui.org/internal/opconst"
+	"gioui.org/ui"
+)
+
+// Op registers a handler for receiving
+// Events.
+type Op struct {
+	Key ui.Key
+}
+
+// Event contains profile data from a single
+// rendered frame.
+type Event struct {
+	// Timings. Very likely to change.
+	Timings string
+}
+
+func (p Op) Add(o *ui.Ops) {
+	data := make([]byte, opconst.TypeProfileLen)
+	data[0] = byte(opconst.TypeProfile)
+	o.Write(data, p.Key)
+}
+
+func (p Event) ImplementsEvent() {}
diff --git a/layout/list.go b/layout/list.go
index 2d53f266..6cd7b804 100644
--- a/layout/list.go
+++ b/layout/list.go
@@ -5,10 +5,10 @@ package layout
 import (
 	"image"
 
-	"gioui.org/ui"
 	"gioui.org/gesture"
+	"gioui.org/io/pointer"
 	"gioui.org/paint"
-	"gioui.org/pointer"
+	"gioui.org/ui"
 )
 
 type scrollChild struct {
diff --git a/system/system.go b/system/system.go
deleted file mode 100644
index dc2bad1c..00000000
--- a/system/system.go
+++ /dev/null
@@ -1,31 +0,0 @@
-// SPDX-License-Identifier: Unlicense OR MIT
-
-// Package system contain ops and types for
-// system events.
-package system
-
-import (
-	"gioui.org/ui"
-	"gioui.org/internal/opconst"
-)
-
-// ProfileOp registers a handler for receiving
-// ProfileEvents.
-type ProfileOp struct {
-	Key ui.Key
-}
-
-// ProfileEvent contain profile data from a single
-// rendered frame.
-type ProfileEvent struct {
-	// String with timings. Very likely to change.
-	Timings string
-}
-
-func (p ProfileOp) Add(o *ui.Ops) {
-	data := make([]byte, opconst.TypeProfileLen)
-	data[0] = byte(opconst.TypeProfile)
-	o.Write(data, p.Key)
-}
-
-func (p ProfileEvent) ImplementsEvent() {}
diff --git a/text/editor.go b/text/editor.go
index 8a982e83..76c558c3 100644
--- a/text/editor.go
+++ b/text/editor.go
@@ -9,12 +9,12 @@ import (
 	"time"
 	"unicode/utf8"
 
-	"gioui.org/ui"
 	"gioui.org/gesture"
-	"gioui.org/key"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
 	"gioui.org/layout"
 	"gioui.org/paint"
-	"gioui.org/pointer"
+	"gioui.org/ui"
 
 	"golang.org/x/image/math/fixed"
 )
diff --git a/ui/doc.go b/ui/doc.go
index 95e2265e..570e2f6f 100644
--- a/ui/doc.go
+++ b/ui/doc.go
@@ -101,7 +101,7 @@ the means for declaring handlers for specific event types.
 
 The following example declares a handler ready for key input:
 
-	import gioui.org/key
+	import gioui.org/io/key
 
 	ops := new(ui.Ops)
 	var h *Handler = ...