diff --git a/cloud/agent/takeover/e2e/BUILD.bazel b/cloud/agent/takeover/e2e/BUILD.bazel
index dc05d9e..1a00569 100644
--- a/cloud/agent/takeover/e2e/BUILD.bazel
+++ b/cloud/agent/takeover/e2e/BUILD.bazel
@@ -21,8 +21,8 @@
     deps = [
         "//cloud/agent/api",
         "//osbase/fat32",
-        "//osbase/freeport",
         "//osbase/structfs",
+        "//osbase/test/freeport",
         "@com_github_pkg_sftp//:sftp",
         "@io_bazel_rules_go//go/runfiles",
         "@org_golang_google_protobuf//proto",
diff --git a/cloud/agent/takeover/e2e/main_test.go b/cloud/agent/takeover/e2e/main_test.go
index 2062be7..db7278a 100644
--- a/cloud/agent/takeover/e2e/main_test.go
+++ b/cloud/agent/takeover/e2e/main_test.go
@@ -27,8 +27,8 @@
 	"source.monogon.dev/cloud/agent/api"
 
 	"source.monogon.dev/osbase/fat32"
-	"source.monogon.dev/osbase/freeport"
 	"source.monogon.dev/osbase/structfs"
+	"source.monogon.dev/osbase/test/freeport"
 )
 
 var (
diff --git a/metropolis/cli/metroctl/test/BUILD.bazel b/metropolis/cli/metroctl/test/BUILD.bazel
index edaa112..3632a44 100644
--- a/metropolis/cli/metroctl/test/BUILD.bazel
+++ b/metropolis/cli/metroctl/test/BUILD.bazel
@@ -14,7 +14,7 @@
     deps = [
         "//metropolis/test/launch",
         "//metropolis/test/util",
-        "//osbase/cmd",
+        "//osbase/test/cmd",
         "@io_bazel_rules_go//go/runfiles",
     ],
 )
diff --git a/metropolis/cli/metroctl/test/main_test.go b/metropolis/cli/metroctl/test/main_test.go
index b853b82..f44f508 100644
--- a/metropolis/cli/metroctl/test/main_test.go
+++ b/metropolis/cli/metroctl/test/main_test.go
@@ -18,7 +18,7 @@
 
 	mlaunch "source.monogon.dev/metropolis/test/launch"
 	"source.monogon.dev/metropolis/test/util"
-	"source.monogon.dev/osbase/cmd"
+	"source.monogon.dev/osbase/test/cmd"
 )
 
 var (
diff --git a/metropolis/cli/takeover/e2e/BUILD.bazel b/metropolis/cli/takeover/e2e/BUILD.bazel
index d01812e..6cebd51 100644
--- a/metropolis/cli/takeover/e2e/BUILD.bazel
+++ b/metropolis/cli/takeover/e2e/BUILD.bazel
@@ -23,8 +23,8 @@
     },
     deps = [
         "//osbase/fat32",
-        "//osbase/freeport",
         "//osbase/structfs",
+        "//osbase/test/freeport",
         "@io_bazel_rules_go//go/runfiles",
         "@org_golang_x_crypto//ssh",
         "@org_golang_x_crypto//ssh/agent",
diff --git a/metropolis/cli/takeover/e2e/main_test.go b/metropolis/cli/takeover/e2e/main_test.go
index 556f300..c86a48d 100644
--- a/metropolis/cli/takeover/e2e/main_test.go
+++ b/metropolis/cli/takeover/e2e/main_test.go
@@ -25,8 +25,8 @@
 	"golang.org/x/sys/unix"
 
 	"source.monogon.dev/osbase/fat32"
-	"source.monogon.dev/osbase/freeport"
 	"source.monogon.dev/osbase/structfs"
+	"source.monogon.dev/osbase/test/freeport"
 )
 
 var (
diff --git a/metropolis/installer/test/BUILD.bazel b/metropolis/installer/test/BUILD.bazel
index 8c6bc8d..ff8cb00 100644
--- a/metropolis/installer/test/BUILD.bazel
+++ b/metropolis/installer/test/BUILD.bazel
@@ -25,10 +25,10 @@
         "//metropolis/cli/metroctl/core",
         "//metropolis/installer/install",
         "//metropolis/proto/api",
-        "//osbase/cmd",
         "//osbase/oci",
         "//osbase/oci/osimage",
         "//osbase/structfs",
+        "//osbase/test/cmd",
         "@com_github_diskfs_go_diskfs//:go-diskfs",
         "@com_github_diskfs_go_diskfs//disk",
         "@com_github_diskfs_go_diskfs//partition/gpt",
diff --git a/metropolis/installer/test/run_test.go b/metropolis/installer/test/run_test.go
index 898ad44..3b7de86 100644
--- a/metropolis/installer/test/run_test.go
+++ b/metropolis/installer/test/run_test.go
@@ -25,10 +25,10 @@
 
 	mctl "source.monogon.dev/metropolis/cli/metroctl/core"
 	"source.monogon.dev/metropolis/installer/install"
-	"source.monogon.dev/osbase/cmd"
 	"source.monogon.dev/osbase/oci"
 	"source.monogon.dev/osbase/oci/osimage"
 	"source.monogon.dev/osbase/structfs"
+	"source.monogon.dev/osbase/test/cmd"
 )
 
 var (
diff --git a/metropolis/node/core/metrics/BUILD.bazel b/metropolis/node/core/metrics/BUILD.bazel
index 893a6c4..bc94863 100644
--- a/metropolis/node/core/metrics/BUILD.bazel
+++ b/metropolis/node/core/metrics/BUILD.bazel
@@ -35,8 +35,8 @@
         "//metropolis/node",
         "//metropolis/node/core/curator/proto/api",
         "//metropolis/test/util",
-        "//osbase/freeport",
         "//osbase/supervisor",
+        "//osbase/test/freeport",
         "@com_zx2c4_golang_wireguard_wgctrl//wgtypes",
         "@io_bazel_rules_go//go/runfiles",
     ],
diff --git a/metropolis/node/core/metrics/metrics_test.go b/metropolis/node/core/metrics/metrics_test.go
index b7c3eab..ebb59a9 100644
--- a/metropolis/node/core/metrics/metrics_test.go
+++ b/metropolis/node/core/metrics/metrics_test.go
@@ -22,8 +22,8 @@
 
 	"source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/test/util"
-	"source.monogon.dev/osbase/freeport"
 	"source.monogon.dev/osbase/supervisor"
+	"source.monogon.dev/osbase/test/freeport"
 )
 
 var (
diff --git a/metropolis/test/nanoswitch/BUILD.bazel b/metropolis/test/nanoswitch/BUILD.bazel
index d7f9d12..9aff921 100644
--- a/metropolis/test/nanoswitch/BUILD.bazel
+++ b/metropolis/test/nanoswitch/BUILD.bazel
@@ -14,8 +14,8 @@
         "//metropolis/node/core/network/dhcp4c",
         "//metropolis/node/core/network/dhcp4c/callback",
         "//osbase/bringup",
-        "//osbase/socksproxy",
         "//osbase/supervisor",
+        "//osbase/test/socksproxy",
         "@com_github_google_nftables//:nftables",
         "@com_github_google_nftables//expr",
         "@com_github_insomniacslk_dhcp//dhcpv4",
diff --git a/metropolis/test/nanoswitch/socks.go b/metropolis/test/nanoswitch/socks.go
index 15e0f81..41efcde 100644
--- a/metropolis/test/nanoswitch/socks.go
+++ b/metropolis/test/nanoswitch/socks.go
@@ -8,8 +8,8 @@
 	"fmt"
 	"net"
 
-	"source.monogon.dev/osbase/socksproxy"
 	"source.monogon.dev/osbase/supervisor"
+	"source.monogon.dev/osbase/test/socksproxy"
 )
 
 // SOCKSPort is the port at which nanoswitch listens for SOCKS conenctions.
diff --git a/osbase/bringup/test/BUILD.bazel b/osbase/bringup/test/BUILD.bazel
index 307220c..15409ac 100644
--- a/osbase/bringup/test/BUILD.bazel
+++ b/osbase/bringup/test/BUILD.bazel
@@ -30,7 +30,7 @@
         "xQEMUPath": "$(rlocationpath //build/toolchain/toolchain-bundle:qemu-kvm )",
     },
     deps = [
-        "//osbase/cmd",
+        "//osbase/test/cmd",
         "@io_bazel_rules_go//go/runfiles",
     ],
 )
diff --git a/osbase/bringup/test/run_test.go b/osbase/bringup/test/run_test.go
index 03ae71b..69b881e 100644
--- a/osbase/bringup/test/run_test.go
+++ b/osbase/bringup/test/run_test.go
@@ -12,7 +12,7 @@
 
 	"github.com/bazelbuild/rules_go/go/runfiles"
 
-	"source.monogon.dev/osbase/cmd"
+	"source.monogon.dev/osbase/test/cmd"
 )
 
 var (
diff --git a/osbase/cmd/BUILD.bazel b/osbase/test/cmd/BUILD.bazel
similarity index 78%
rename from osbase/cmd/BUILD.bazel
rename to osbase/test/cmd/BUILD.bazel
index dd5f66e..6d6a3c9 100644
--- a/osbase/cmd/BUILD.bazel
+++ b/osbase/test/cmd/BUILD.bazel
@@ -3,7 +3,7 @@
 go_library(
     name = "cmd",
     srcs = ["run.go"],
-    importpath = "source.monogon.dev/osbase/cmd",
+    importpath = "source.monogon.dev/osbase/test/cmd",
     visibility = ["//visibility:public"],
     deps = [
         "//osbase/logbuffer",
diff --git a/osbase/cmd/run.go b/osbase/test/cmd/run.go
similarity index 100%
rename from osbase/cmd/run.go
rename to osbase/test/cmd/run.go
diff --git a/osbase/freeport/BUILD.bazel b/osbase/test/freeport/BUILD.bazel
similarity index 72%
rename from osbase/freeport/BUILD.bazel
rename to osbase/test/freeport/BUILD.bazel
index b0fcd25..30d229f 100644
--- a/osbase/freeport/BUILD.bazel
+++ b/osbase/test/freeport/BUILD.bazel
@@ -3,6 +3,6 @@
 go_library(
     name = "freeport",
     srcs = ["freeport.go"],
-    importpath = "source.monogon.dev/osbase/freeport",
+    importpath = "source.monogon.dev/osbase/test/freeport",
     visibility = ["//visibility:public"],
 )
diff --git a/osbase/freeport/freeport.go b/osbase/test/freeport/freeport.go
similarity index 100%
rename from osbase/freeport/freeport.go
rename to osbase/test/freeport/freeport.go
diff --git a/osbase/test/qemu/BUILD.bazel b/osbase/test/qemu/BUILD.bazel
index 0145ddb..dc89881 100644
--- a/osbase/test/qemu/BUILD.bazel
+++ b/osbase/test/qemu/BUILD.bazel
@@ -15,7 +15,7 @@
         "xQEMUPath": "$(rlocationpath //build/toolchain/toolchain-bundle:qemu-kvm )",
     },
     deps = [
-        "//osbase/freeport",
+        "//osbase/test/freeport",
         "@io_bazel_rules_go//go/runfiles",
         "@org_golang_x_sys//unix",
     ],
diff --git a/osbase/test/qemu/launch.go b/osbase/test/qemu/launch.go
index ba33961..a427f17 100644
--- a/osbase/test/qemu/launch.go
+++ b/osbase/test/qemu/launch.go
@@ -21,7 +21,7 @@
 	"github.com/bazelbuild/rules_go/go/runfiles"
 	"golang.org/x/sys/unix"
 
-	"source.monogon.dev/osbase/freeport"
+	"source.monogon.dev/osbase/test/freeport"
 )
 
 var (
diff --git a/osbase/socksproxy/BUILD.bazel b/osbase/test/socksproxy/BUILD.bazel
similarity index 85%
rename from osbase/socksproxy/BUILD.bazel
rename to osbase/test/socksproxy/BUILD.bazel
index 2365f12..4ba8a71 100644
--- a/osbase/socksproxy/BUILD.bazel
+++ b/osbase/test/socksproxy/BUILD.bazel
@@ -6,7 +6,7 @@
         "protocol.go",
         "socksproxy.go",
     ],
-    importpath = "source.monogon.dev/osbase/socksproxy",
+    importpath = "source.monogon.dev/osbase/test/socksproxy",
     visibility = ["//visibility:public"],
 )
 
diff --git a/osbase/socksproxy/protocol.go b/osbase/test/socksproxy/protocol.go
similarity index 100%
rename from osbase/socksproxy/protocol.go
rename to osbase/test/socksproxy/protocol.go
diff --git a/osbase/socksproxy/socksproxy.go b/osbase/test/socksproxy/socksproxy.go
similarity index 100%
rename from osbase/socksproxy/socksproxy.go
rename to osbase/test/socksproxy/socksproxy.go
diff --git a/osbase/socksproxy/socksproxy_test.go b/osbase/test/socksproxy/socksproxy_test.go
similarity index 100%
rename from osbase/socksproxy/socksproxy_test.go
rename to osbase/test/socksproxy/socksproxy_test.go