diff --git a/basis/tools/hexdump/authors.txt b/basis/tools/hexdump/authors.txt
new file mode 100644
index 0000000000..7c1b2f2279
--- /dev/null
+++ b/basis/tools/hexdump/authors.txt
@@ -0,0 +1 @@
+Doug Coleman
diff --git a/basis/tools/hexdump/hexdump-docs.factor b/basis/tools/hexdump/hexdump-docs.factor
new file mode 100644
index 0000000000..4278e92f0e
--- /dev/null
+++ b/basis/tools/hexdump/hexdump-docs.factor
@@ -0,0 +1,22 @@
+! Copyright (C) 2008 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: help.markup help.syntax kernel sequences strings ;
+IN: hexdump
+
+HELP: hexdump.
+{ $values { "seq" sequence } }
+{ $description "Converts a sequence to its hexadecimal and ASCII representation sixteen characters at a time and writes it to standard out." } ;
+
+HELP: hexdump
+{ $values { "seq" sequence } { "str" string } }
+{ $description "Converts a sequence to its hexadecimal and ASCII representation sixteen characters at a time.  Lines are separated by a newline character." }
+{ $see-also hexdump. } ;
+
+ARTICLE: "hexdump" "Hexdump"
+"The " { $vocab-link "hexdump" } " vocabulary provides a traditional hexdump view of a sequence." $nl
+"Write hexdump to string:"
+{ $subsection hexdump }
+"Write the hexdump to the output stream:"
+{ $subsection hexdump. } ;
+
+ABOUT: "hexdump"
diff --git a/basis/tools/hexdump/hexdump-tests.factor b/basis/tools/hexdump/hexdump-tests.factor
new file mode 100644
index 0000000000..b3c03196f5
--- /dev/null
+++ b/basis/tools/hexdump/hexdump-tests.factor
@@ -0,0 +1,11 @@
+IN: hexdump.tests
+USING: hexdump kernel sequences tools.test ;
+
+[ t ] [ "" hexdump "Length: 0, 0h\n" = ] unit-test
+[ t ] [ "abcdefghijklmnopqrstuvwxyz" hexdump "Length: 26, 1ah\n00000000h: 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 70 abcdefghijklmnop\n00000010h: 71 72 73 74 75 76 77 78 79 7a                   qrstuvwxyz\n" = ] unit-test
+
+[ t ] [ 256 [ ] map hexdump "Length: 256, 100h\n00000000h: 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f ................\n00000010h: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f ................\n00000020h: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f  !\"#$%&'()*+,-./\n00000030h: 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 0123456789:;<=>?\n00000040h: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO\n00000050h: 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f PQRSTUVWXYZ[\\]^_\n00000060h: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f `abcdefghijklmno\n00000070h: 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f pqrstuvwxyz{|}~.\n00000080h: 80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f ................\n00000090h: 90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f ................\n000000a0h: a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af ................\n000000b0h: b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf ................\n000000c0h: c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf ................\n000000d0h: d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 da db dc dd de df ................\n000000e0h: e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef ................\n000000f0h: f0 f1 f2 f3 f4 f5 f6 f7 f8 f9 fa fb fc fd fe ff ................\n" = ] unit-test
+
+
+[
+    "Length: 3, 3h\n00000000h: 01 02 03                                        ...\n" ] [ B{ 1 2 3 } hexdump ] unit-test
diff --git a/basis/tools/hexdump/hexdump.factor b/basis/tools/hexdump/hexdump.factor
new file mode 100644
index 0000000000..c8b9f4accc
--- /dev/null
+++ b/basis/tools/hexdump/hexdump.factor
@@ -0,0 +1,36 @@
+! Copyright (C) 2008 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: arrays io io.streams.string kernel math math.parser
+namespaces sequences splitting grouping strings ascii ;
+IN: tools.hexdump
+
+<PRIVATE
+
+: write-header ( len -- )
+    "Length: " write
+    [ number>string write ", " write ]
+    [ >hex write "h" write nl ] bi ;
+
+: write-offset ( lineno -- )
+    16 * >hex 8 CHAR: 0 pad-left write "h: " write ;
+
+: >hex-digit ( digit -- str )
+    >hex 2 CHAR: 0 pad-left " " append ;
+
+: >hex-digits ( bytes -- str )
+    [ >hex-digit ] { } map-as concat 48 CHAR: \s pad-right ;
+
+: >ascii ( bytes -- str )
+    [ [ printable? ] keep CHAR: . ? ] "" map-as ;
+
+: write-hex-line ( bytes lineno -- )
+    write-offset [ >hex-digits write ] [ >ascii write ] bi nl ;
+
+PRIVATE>
+
+: hexdump. ( seq -- )
+    [ length write-header ]
+    [ 16 <sliced-groups> [ write-hex-line ] each-index ] bi ;
+
+: hexdump ( seq -- str )
+    [ hexdump. ] with-string-writer ;
diff --git a/basis/tools/hexdump/summary.txt b/basis/tools/hexdump/summary.txt
new file mode 100644
index 0000000000..d860bd7f84
--- /dev/null
+++ b/basis/tools/hexdump/summary.txt
@@ -0,0 +1 @@
+Prints formatted hex dump of an arbitrary sequence