diff --git a/pack/acp/start/mom.vim/ftdetect/mom.vim b/pack/acp/start/mom.vim/ftdetect/mom.vim
new file mode 100644
index 0000000..b9ab693
--- /dev/null
+++ b/pack/acp/start/mom.vim/ftdetect/mom.vim
@@ -0,0 +1 @@
+autocmd BufRead,BufNewFile *.mom set filetype=mom
diff --git a/pack/acp/start/mom.vim/syntax/mom.vim b/pack/acp/start/mom.vim/syntax/mom.vim
new file mode 100644
index 0000000..fe8debf
--- /dev/null
+++ b/pack/acp/start/mom.vim/syntax/mom.vim
@@ -0,0 +1,140 @@
+" Copyright (C) 2012-2020 Free Software Foundation, Inc.
+"
+" Copying and distribution of this file, with or without modification,
+" are permitted in any medium without royalty provided the copyright
+" notice and this notice are preserved.
+
+" Vim syntax file
+" Language:    mom
+" Maintainer:  Peter Schaffter (peter@schaffter.ca)
+" Last Change: So 06 Mär 2005 17:28:13 CET
+" Filenames:   *.mom
+" URL:         http://www.cvjb.de/comp/vim/mom.vim
+" Note:        Remove or overwrite troff syntax for *.mom-files with filetype/filedetect.
+" Version:     0.1
+"
+" Mom: Macro set for easy typesetting with troff/nroff/groff.
+
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+	syntax clear
+elseif exists("b:current_syntax")
+	finish
+endif
+
+" Mom is case sensitive
+syn case match
+
+" Synchronization, I know it is a huge number, but normal texts can be
+" _very_ long ;-)
+syn sync lines=1000
+
+" Characters allowed in keywords
+if version >= 600
+	setlocal iskeyword=@,#,$,%,48-57,.,@-@,_,\\,{,},192-255
+else
+	set iskeyword=@,#,$,%,48-57,.,@-@,_,\\,{,},192-255
+endif
+
+" mom/groff macros and requests (the initial dot or single-quote)
+"
+" Highlighting carries through to EOL; macro names, requests and
+" arguments are contained
+syn match startRequest /^\s*\(\.\|'\)\s*.*$/ contains=momMacro,groffCommentLine,groffRequest,momRegister,groffNoLineBreak,momInteger,groffUnit,momString,momSpecialParam,groffDelimiter,groffRegister,groffPreprocessor,groffBraces
+
+" mom macros
+syn region momMacro start=/^\s*\(\.\|'\)\s*\zs[A-Z0-9_(){}\[\]]\+/ end=/\s\+\|$/
+
+" mom registers and strings
+syn match momRegister /\(\$\|#\)[A-Za-z][_0-9A-Za-z]*/ contains=momRegisterStart
+
+syn match momRegisterStart /#\|\$/ contained
+
+" mom comment region
+syn region momCommentRegion matchgroup=startRequest start='\<\.\(COMMENT\)\|\(SILENT\)\>' end='\<\.\(COMMENT\s\+OFF\)\|\(SILENT\s\+OFF\)\>' skip='$'
+
+" groff requests
+syn match groffRequest /^\s*\(\.\|'\)\s*\zs[a-z0-9]\+/
+
+" groff comment region
+syn region groffCommentLine start='\(\\!\)\|\(\\"\)\|\(\\#\)' end='$' contains=momTodo
+syn region groffCommentRegion start="^\s*\.\s*ig" matchgroup=startRequest end="^\.\.$" contains=startRequest
+
+" Preprocessor requests
+syn match groffPreprocessor /[^A-Z]\zs\(EQ\s*$\|EN\s*$\|GS\s*$\|GE\s*$\|GF\s*$\|PS\s*$\|PE\s*$\|R1\s*$\|R2\s*$\|TS\s*$\|TE\s*$\|TH\s*$\)/ contained
+syn match groffPreprocessor /[^A-Z]\zs\(G1\s*$\|G2\s*$\|IS\s*$\|IE\s*$\|cstart\s*$\|cend\s*$\)/ contained
+
+" Preprocessor requests for refer
+syn match groffPreprocessor /\(\[\s*$\|\]\s*$\)/ contained
+
+" Quoted strings
+syn region momString matchgroup=startRequest start='"\zs' end='"\|$' contains=groffNoLineBreak,groffGreek,groffSpecialChar,momInteger,momFloatEN,momFloatDE,momBracketRegion,momBracketError,momSpecialMove contained
+
+" Special characters
+syn match groffSpecialChar '\\\((\|\[\)[-+A-Za-z0-9*<>=~!\/]\+\]*'
+
+" Greek symbols
+syn match groffGreek '\\(\*[A-Za-z]\+'
+
+" Hyphenation marks
+syn match groffHyphenation '\\%'
+
+" Masking of line breaks
+syn match groffNoLineBreak /\\\s*$/ contains=groffBraces
+
+" groff number and string register delimiters
+syn region groffDelimiter start=/\\*\\\(n+*\|\*\)\((\|\[\)\</ end=/\(\s\|\]\|$\)/ contains=momRegister,groffRegister,groffOperators
+
+" groff registers
+syn match groffRegister /\\\((\|\[\)\zs\.*[a-z]\+/
+
+" groff operators
+syn match groffOperators /\(+\|-\|\/\|\*[^[]\)/ contained
+
+" Units (of measure)
+syn match groffUnit '[-+]\=\([0-9]\|]\)\+\zs[icPpvusfz]\=' contained
+
+" Braces
+syn match groffBraces /\(\\{\|\\}\)/ contained
+
+" Error
+syn match groffError '\\\[ \+[[:print:]]\+ \+[[:print:]]\+\]'
+
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_mom_syn_inits")
+	if version < 508
+		let did_mom_syn_inits = 1
+		command -nargs=+ HiLink hi link <args>
+	else
+		command -nargs=+ HiLink hi def link <args>
+	endif
+
+HiLink groffError               Error
+HiLink groffBraces              darkmagenta
+HiLink groffCommentLine		darkcyan
+HiLink groffCommentRegion	cyan
+HiLink groffDelimiter		cyan
+HiLink groffGreek		cyan
+HiLink groffHyphenation		cyan
+HiLink groffNoLineBreak		cyan
+HiLink groffOperators		white
+HiLink groffPreprocessor	brown
+HiLink groffRegister		darkgreen
+HiLink groffRequest		magenta
+HiLink groffSpecialChar		darkcyan
+HiLink groffUnit		brown
+HiLink momCommentRegion		darkcyan
+HiLink momMacro			red
+HiLink momRegister		green
+HiLink momRegisterStart         magenta
+HiLink momSpecialParam		red
+HiLink momString		white
+HiLink startRequest		yellow
+	delcommand HiLink
+endif
+
+let b:current_syntax = "mom"
+
+" vim:ts=8:sw=4:nocindent:smartindent:
diff --git a/plugins.md b/plugins.md
index b49c5dd..fed4591 100644
--- a/plugins.md
+++ b/plugins.md
@@ -13,6 +13,7 @@ Git submodules are slow, so handle this manually.
 * [gruvbox](https://github.com/morhetz/gruvbox)
 * [landscape.vim](https://github.com/itchyny/landscape.vim)
 * [limelight.vim](https://github.com/junegunn/limelight.vim)
+* [mom.vim](http://git.savannah.gnu.org/cgit/groff.git/plain/contrib/mom/examples/mom.vim)
 * [tempus-themes-vim](https://gitlab.com/protesilaos/tempus-themes-vim)
 * [vim-actodo](https://github.com/acperkins/vim-actodo)
 * [vim-speeddating](https://github.com/tpope/vim-speeddating)