diff --git a/.mlvwm/apps/.AppsManifest b/.mlvwm/apps/.AppsManifest
index f84b0c5..26130d3 100644
--- a/.mlvwm/apps/.AppsManifest
+++ b/.mlvwm/apps/.AppsManifest
@@ -1,5 +1,6 @@
 Read .mlvwm/apps/BasiliskII
 Read .mlvwm/apps/chrome
+Read .mlvwm/apps/firefox
 Read .mlvwm/apps/vlc
 Read .mlvwm/apps/xcalc
 Read .mlvwm/apps/xclock
diff --git a/.mlvwm/apps/firefox b/.mlvwm/apps/firefox
new file mode 100644
index 0000000..04190d4
--- /dev/null
+++ b/.mlvwm/apps/firefox
@@ -0,0 +1,97 @@
+Menu Firefox-File, Label "File", Left
+"New Tab" Action SendMessage C+T
+"New Window" Action SendMessage C+N
+"New Private Window" Action SendMessage SC+P
+"Open File..." Action SendMessage C+O
+"Close Window" Action SendMessage SC+W
+"Close Tab" Action SendMessage C+W
+"" NonSelect
+"Save Page As..." Action SendMessage C+S
+"" NonSelect
+"Quit" Action SendMessage SC+Q
+END
+
+Menu Firefox-Edit, Label "Edit", Left
+"Undo" Action SendMessage C+Z
+"Redo" Action SendMessage C+Y
+"" NonSelect
+"Cut" Action SendMessage C+X
+"Copy" Action SendMessage C+C
+"Paste" Action SendMessage C+V
+"Delete" Action SendMessage Delete
+"" NonSelect
+"Select All" Action SendMessage C+A
+"Find in This Page..." Action SendMessage C+F
+"Find Again" Action SendMessage C+G
+END
+
+Menu Firefox-View-Sidebar
+"Bookmarks" Action SendMessage C+B
+"History" Action SendMessage C+H
+END
+
+Menu Firefox-View-Zoom
+"Zoom In" Action SendMessage C+plus
+"Zoom Out" Action SendMessage C+minus
+"" NonSelect
+"Reset" Action SendMessage C+0
+END
+
+Menu Firefox-View, Label "View", Left
+"Toolbars" NonSelect, Gray
+"Sidebar" SubMenu Firefox-View-Sidebar
+"" NonSelect
+"Zoom" SubMenu Firefox-View-Zoom
+"Page Style" NonSelect, Gray
+""
+"Toggle Full Screen" NonSelect, Gray
+END
+
+Menu Firefox-Bookmarks, Label "Bookmarks", Left
+"Show All Bookmarks" Action SendMessage SC+B
+"" NonSelect
+"Bookmark This Page" Action SendMessage C+D
+"Bookmark All Tabs..." Action SendMesage SC+D
+END
+
+Menu Firefox-Tools-Developer, Label "Web Developer"
+"Toggle Tools" Action SendMessage SC+I
+"Inspector" Action SendMessage SC+C
+"Web Console" Action SendMessage SC+K
+"Debugger" Action SendMessage SC+S
+"Style Editor" Action SendMessage S+F7
+"Performance" Action SendMessage S+F5
+"Network" Action SendMessage SC+E
+"Storage Inspector" NonSelect, Gray
+"Accessibility" NonSelect, Gray
+"" NonSelect
+"WebIDE" NonSelect, Gray
+"Browser Console" Action SendMessage SC+J
+"Responsive Design Mode" Action SendMessage SC+M
+"Eyedropper" NonSelect, Gray
+"Scratchpad" Action SendMessage S+F4
+"Service Workers" NonSelect, Gray
+"Page Source" Action SendMessage C+U
+END
+
+Menu Firefox-Tools, Label "Tools", Left
+"Downloads" Action SendMessage C+J
+"Add-ons" Action SendMessage SC+A
+"" NonSelect
+"Web Developer" SubMenu Firefox-Tools-Developer
+"Page Info" NonSelect, Gray
+END
+
+MenuBar Firefox
+Firefox-File
+Firefox-Edit
+Firefox-View
+Firefox-Bookmarks
+Firefox-Tools
+END
+
+Style
+"Firefox*" NoSBarH, NoSBarV
+"Firefox*" MiniIcon firefox.xpm, MenuBar Firefox
+END
+
diff --git a/.mlvwm/pixmap/firefox.xpm b/.mlvwm/pixmap/firefox.xpm
new file mode 100644
index 0000000..415a3bf
--- /dev/null
+++ b/.mlvwm/pixmap/firefox.xpm
@@ -0,0 +1,202 @@
+/* XPM */
+static char *firefox[] = {
+/* columns rows colors chars-per-pixel */
+"16 16 180 2 ",
+"   c #200500",
+".  c #4E0802",
+"X  c #740B02",
+"o  c #791502",
+"O  c #572E0D",
+"+  c #693925",
+"@  c #73342C",
+"#  c #7F4115",
+"$  c #001D5D",
+"%  c #0D2259",
+"&  c #272758",
+"*  c #223050",
+"=  c #01266F",
+"-  c #072B6D",
+";  c #0C2F6E",
+":  c #10326B",
+">  c #0F3978",
+",  c #123F7E",
+"<  c #384D79",
+"1  c #3A537B",
+"2  c #727F75",
+"3  c #8E0C03",
+"4  c #970E03",
+"5  c #951002",
+"6  c #9E1D03",
+"7  c #AD1A04",
+"8  c #A92206",
+"9  c #AB2404",
+"0  c #B02909",
+"q  c #B22F0A",
+"w  c #BB2C08",
+"e  c #BD3104",
+"r  c #B4330C",
+"t  c #C33802",
+"y  c #CA3F0B",
+"u  c #94440F",
+"i  c #A85007",
+"p  c #8B5239",
+"a  c #935132",
+"s  c #A65827",
+"d  c #906733",
+"f  c #AF683F",
+"g  c #B96031",
+"h  c #A37432",
+"j  c #CB4104",
+"k  c #C64D06",
+"l  c #C1420A",
+"z  c #C4410C",
+"x  c #C1470F",
+"c  c #CE450B",
+"v  c #C74C0D",
+"b  c #D4470A",
+"n  c #D1470C",
+"m  c #D2480C",
+"M  c #D14E0F",
+"N  c #D74D0C",
+"B  c #D44F0D",
+"V  c #DC4B0B",
+"C  c #DE5204",
+"Z  c #D5570D",
+"A  c #D9510A",
+"S  c #DE570C",
+"D  c #D35A0D",
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+"G  c #DC5F0B",
+"H  c #CA4B10",
+"J  c #CB4E10",
+"K  c #CF4F10",
+"L  c #D04F10",
+"P  c #C95012",
+"I  c #CE5513",
+"U  c #C65F14",
+"Y  c #CF5F17",
+"T  c #C25C1D",
+"R  c #D15311",
+"E  c #D25411",
+"W  c #D45A11",
+"Q  c #D55F12",
+"!  c #D35C14",
+"~  c #D35F1A",
+"^  c #C8660D",
+"/  c #DF640A",
+"(  c #D8610C",
+")  c #D16A0B",
+"_  c #DF680A",
+"`  c #D26115",
+"'  c #D76517",
+"]  c #DD6011",
+"[  c #D96414",
+"{  c #D96415",
+"}  c #DB6D19",
+"|  c #E1760E",
+" . c #E27D0E",
+".. c #E16811",
+"X. c #E8701B",
+"o. c #C2662A",
+"O. c #CD6229",
+"+. c #D56A21",
+"@. c #D76A26",
+"#. c #A96C40",
+"$. c #A7873B",
+"%. c #CA810C",
+"&. c #E4830B",
+"*. c #E6840A",
+"=. c #E88612",
+"-. c #E58811",
+";. c #EC9613",
+":. c #E8A41B",
+">. c #EFA31D",
+",. c #F1A517",
+"<. c #C68F3E",
+"1. c #CC903B",
+"2. c #E18535",
+"3. c #F0BD2D",
+"4. c #F6BE2D",
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+"9. c #BF8055",
+"0. c #888273",
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+"w. c #D09C76",
+"e. c #E8C54B",
+"r. c #F5C643",
+"t. c #F8D547",
+"y. c #E0C25D",
+"u. c #F4D153",
+"i. c #154585",
+"p. c #1F4D8D",
+"a. c #184F90",
+"s. c #1E5A9A",
+"d. c #2C5A89",
+"f. c #3C6F9C",
+"g. c #1E66AB",
+"h. c #236FB4",
+"j. c #3D6FB6",
+"k. c #2672B4",
+"l. c #2B73B2",
+"z. c #40658F",
+"x. c #576980",
+"c. c #247AC1",
+"v. c #257AC1",
+"b. c #698482",
+"n. c #5186AA",
+"m. c #4684B2",
+"M. c #618DA7",
+"N. c #6893AF",
+"B. c #3A98D7",
+"V. c #3C98D6",
+"C. c #3A9CDA",
+"Z. c #4891C9",
+"A. c #589AC3",
+"S. c #46A9DF",
+"D. c #74AFD0",
+"F. c #4DABE0",
+"G. c #5DB8E1",
+"H. c #5ABDEC",
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+"L. c #67D3F2",
+"P. c #7BDEF4",
+"I. c #9A8781",
+"U. c #A29F8C",
+"Y. c #B7B980",
+"T. c #BCC2B6",
+"R. c #88C0DC",
+"E. c #8BD3E5",
+"W. c #8BDBEF",
+"Q. c #85DBF0",
+"!. c #88E3F7",
+"~. c #93E4F3",
+"^. c #ABEFFB",
+"/. c #ACEFFB",
+"(. c #B3EEF8",
+"). c #BDF3FD",
+"_. c #C2F2FB",
+"`. c #CCF6FD",
+"'. c #D4F8FD",
+"]. c None",
+/* pixels */
+"].].].].].].m.D.R.J.].].].].].].",
+"].].].].p.K.).'.'.`.E.M.].].].].",
+"].].p : j.I.T._._.(.W.A.Y.f ].].",
+"].V ] +.O.g ~.^./.Q.G.Z.q.y.1.].",
+"]...A B E P 9.U.!.P.L.S.b.u.e.].",
+"].S b c K @.w.N.H.F.V.k.d.r.t.].",
+"].N n L ~ 2.n.C.B.l.s.a.2 5.7.o.",
+"X.m M x 6 < h.c.v.g.i., 8.6.3.h ",
+"].y R l t #.z.x.0.f.> ; $.4.:.].",
+"].w H W C v Y ` a 1 - * >.,.&.].",
+"].7 0 I { [ @ & = $ % d ;.*.T ].",
+"].].4 r I ' } s + # ) =. .^ <.].",
+"].].X 3 q J ! Q F D ( | -.%.].].",
+"].].].. 5 8 z Z G / _ U u ].].].",
+"].].].].  o 9 e j k i O ].].].].",
+"].].].].].].].].].].].].].].].]."
+};