diff --git a/config.py b/config.py
index 3270b6a0..ec009864 100644
--- a/config.py
+++ b/config.py
@@ -14,8 +14,6 @@
     "0:ls.com": "apps+ls",
     "0:stat.com": "apps+stat",
     "0:submit.com": "apps+submit",
-    "0:xrecv.com": "apps+xrecv",
-    "0:xsend.com": "apps+xsend",
 }
 
 # Programs which only work on a real CP/M filesystem (not emulation).
@@ -34,8 +32,6 @@
     "0:atbasic.com": "third_party/altirrabasic",
     "0:atbasic.txt": "cpmfs+atbasic_txt_cpm",
     "0:objdump.com": "apps+objdump",
-    "0:kbdtest.com": "apps+kbdtest",
-    "0:ansiterm.com": "apps+ansiterm",
 }
 
 BIG_APPS_SRCS = {}
@@ -49,6 +45,7 @@
     "0:scrntest.com": "apps+scrntest",
     "0:vt52drv.com": "apps+vt52drv",
     "0:vt52test.com": "apps+vt52test",
+    "0:kbdtest.com": "apps+kbdtest",
 }
 
 BIG_SCREEN_APPS = {
@@ -64,3 +61,12 @@
     "0:pload.com": "third_party/pascal-m+loader",
     "0:hello.pas": "cpmfs+hello_pas_cpm",
 }
+
+SERIAL_APPS = {
+    "0:xrecv.com": "apps+xrecv",
+    "0:xsend.com": "apps+xsend",
+}
+
+SERIAL_SCREEN_APPS = {
+    "0:ansiterm.com": "apps+ansiterm",
+}
diff --git a/src/arch/bbcmicro/build.py b/src/arch/bbcmicro/build.py
index 9b2bf536..864b80f9 100644
--- a/src/arch/bbcmicro/build.py
+++ b/src/arch/bbcmicro/build.py
@@ -27,7 +27,7 @@
     | BIG_APPS_SRCS
     | SCREEN_APPS
     | SCREEN_APPS_SRCS
-    | PASCAL_APPS,
+    | PASCAL_APPS
 )
 
 mkdfs(
diff --git a/src/arch/nano6502/build.py b/src/arch/nano6502/build.py
index 10c76558..002765b7 100644
--- a/src/arch/nano6502/build.py
+++ b/src/arch/nano6502/build.py
@@ -9,6 +9,8 @@
     SCREEN_APPS,
     BIG_SCREEN_APPS,
     PASCAL_APPS,
+    SERIAL_APPS,
+    SERIAL_SCREEN_APPS,
 )
 
 llvmrawprogram(
@@ -34,7 +36,9 @@
     | BIG_APPS_SRCS
     | SCREEN_APPS
     | BIG_SCREEN_APPS
-    | PASCAL_APPS,
+    | PASCAL_APPS
+    | SERIAL_APPS
+    | SERIAL_SCREEN_APPS
 )
 
 mkcpmfs(
diff --git a/src/arch/sorbus/build.py b/src/arch/sorbus/build.py
index f50417a4..df461f08 100644
--- a/src/arch/sorbus/build.py
+++ b/src/arch/sorbus/build.py
@@ -8,6 +8,7 @@
     BIG_APPS,
     BIG_APPS_SRCS,
     PASCAL_APPS,
+    SERIAL_APPS,
 )
 
 llvmrawprogram(
@@ -25,7 +26,8 @@
     | MINIMAL_APPS_SRCS
     | BIG_APPS
     | BIG_APPS_SRCS
-    | PASCAL_APPS,
+    | PASCAL_APPS
+    | SERIAL_APPS
 )
 
 zip(