diff --git a/extra/ls/authors.txt b/extra/ls/authors.txt
deleted file mode 100644
index 7c1b2f2279..0000000000
--- a/extra/ls/authors.txt
+++ /dev/null
@@ -1 +0,0 @@
-Doug Coleman
diff --git a/extra/ls/ls-tests.factor b/extra/ls/ls-tests.factor
deleted file mode 100644
index b1c1f18472..0000000000
--- a/extra/ls/ls-tests.factor
+++ /dev/null
@@ -1,6 +0,0 @@
-! Copyright (C) 2008 Your name.
-! See http://factorcode.org/license.txt for BSD license.
-USING: tools.test ls strings kernel ;
-IN: ls.tests
-
-[ ] [ "" ls drop ] unit-test
diff --git a/extra/ls/ls.factor b/extra/ls/ls.factor
deleted file mode 100755
index 92aff714e6..0000000000
--- a/extra/ls/ls.factor
+++ /dev/null
@@ -1,40 +0,0 @@
-! Copyright (C) 2008 Doug Coleman.
-! See http://factorcode.org/license.txt for BSD license.
-USING: accessors arrays combinators io io.files kernel
-math.parser sequences system vocabs.loader calendar
-sequences.lib ;
-
-IN: ls
-
-: ls-time ( timestamp -- string )
-    [ hour>> ] [ minute>> ] bi
-    [ number>string 2 CHAR: 0 pad-left ] bi@ ":" splice ;
-
-: ls-timestamp ( timestamp -- string )
-    [ month>> month-abbreviation ]
-    [ day>> number>string 2 CHAR: \s pad-left ]
-    [
-        dup year>> dup now year>> =
-        [ drop ls-time ] [ nip number>string ] if
-        5 CHAR: \s pad-left
-    ] tri 3array " " join ;
-
-: read>string ( ? -- string ) "r" "-" ? ; inline
-
-: write>string ( ? -- string ) "w" "-" ? ; inline
-
-HOOK: execute>string os ( ? -- string )
-
-M: object execute>string ( ? -- string ) "x" "-" ? ; inline
-
-HOOK: permissions-string os ( -- str )
-
-HOOK: (directory.) os ( path -- lines )
-
-: directory. ( path -- )
-    [ (directory.) ] with-directory-files [ print ] each ;
-
-{
-    { [ os unix? ] [ "ls.unix" ] }
-    { [ os windows? ] [ "ls.windows" ] }
-} cond require
\ No newline at end of file
diff --git a/extra/ls/tags.txt b/extra/ls/tags.txt
deleted file mode 100644
index 6bf68304bb..0000000000
--- a/extra/ls/tags.txt
+++ /dev/null
@@ -1 +0,0 @@
-unportable
diff --git a/extra/ls/unix/authors.txt b/extra/ls/unix/authors.txt
deleted file mode 100755
index 7c1b2f2279..0000000000
--- a/extra/ls/unix/authors.txt
+++ /dev/null
@@ -1 +0,0 @@
-Doug Coleman
diff --git a/extra/ls/unix/tags.txt b/extra/ls/unix/tags.txt
deleted file mode 100644
index 6bf68304bb..0000000000
--- a/extra/ls/unix/tags.txt
+++ /dev/null
@@ -1 +0,0 @@
-unportable
diff --git a/extra/ls/unix/unix.factor b/extra/ls/unix/unix.factor
deleted file mode 100755
index 9a3f832961..0000000000
--- a/extra/ls/unix/unix.factor
+++ /dev/null
@@ -1,41 +0,0 @@
-! Copyright (C) 2008 Doug Coleman.
-! See http://factorcode.org/license.txt for BSD license.
-USING: accessors combinators combinators.cleave kernel system unicode.case
-io.unix.files ls ;
-IN: ls.unix
-
-M: unix execute-string ( str bools -- str' )
-    swap {
-        { { t t } [ >lower ] }
-        { { t f } [ >upper ] }
-        { { f t } [ drop "x" ] }
-        [ 2drop "-" ]
-    } case ;
-
-M: unix permissions-string ( permissions -- str )
-    {
-        [ type>> file-type>ch 1string ]
-        [ user-read? read>string ]
-        [ user-write? write>string ]
-        [ [ uid? ] [ user-execute? ] bi 2array "s" execute-string ]
-        [ group-read? read>string ]
-        [ group-write? write>string ]
-        [ [ gid? ] [ group-execute? ] bi 2array "s" execute-string ]
-        [ other-read? read>string ]
-        [ other-write? write>string ]
-        [ [ sticky? ] [ other-execute? ] bi 2array "t" execute-string ]
-    } <arr> concat ;
-
-M: unix ls ( path -- lines )
-        [ [
-            dup file-info
-            {
-                [ permissions-string ]
-                [ nlink>> number>string 3 CHAR: \s pad-left ]
-                ! [ uid>> ]
-                ! [ gid>> ]
-                [ size>> number>string 15 CHAR: \s pad-left ]
-                [ modified>> ls-timestamp ]
-            } <arr> swap suffix " " join
-        ] map
-    ] with-group-cache ] with-user-cache ;
\ No newline at end of file
diff --git a/extra/ls/windows/authors.txt b/extra/ls/windows/authors.txt
deleted file mode 100755
index 7c1b2f2279..0000000000
--- a/extra/ls/windows/authors.txt
+++ /dev/null
@@ -1 +0,0 @@
-Doug Coleman
diff --git a/extra/ls/windows/tags.txt b/extra/ls/windows/tags.txt
deleted file mode 100644
index 6bf68304bb..0000000000
--- a/extra/ls/windows/tags.txt
+++ /dev/null
@@ -1 +0,0 @@
-unportable
diff --git a/extra/ls/windows/windows.factor b/extra/ls/windows/windows.factor
deleted file mode 100755
index b7d7eeeb0b..0000000000
--- a/extra/ls/windows/windows.factor
+++ /dev/null
@@ -1,20 +0,0 @@
-! Copyright (C) 2008 Doug Coleman.
-! See http://factorcode.org/license.txt for BSD license.
-USING: accessors calendar.format combinators combinators.cleave
-io.files kernel math.parser sequences splitting system ls sequences.lib ;
-IN: ls.windows
-
-: directory-or-size ( file-info -- str )
-    dup directory? [
-        drop "<DIR>" 20 CHAR: \s pad-right
-    ] [
-        size>> number>string 20 CHAR: \s pad-left
-    ] if ;
-
-M: windows (directory.) ( entries -- lines )
-    [
-        dup file-info {
-            [ modified>> timestamp>ymdhms " " split1 "  " splice ]
-            [ directory-or-size ]
-        } <arr> swap suffix " " join
-    ] map ;
\ No newline at end of file