XWiki vs. MediaWiki vs. PhpWiki vs. PmWiki

XWiki supports 16+ input syntaxes (e.g. confluence, twiki, docbook, mediawiki, xwiki, markdown, etc), see http://rendering.xwiki.org/xwiki/bin/view/Main/WebHome#HSupportedSyntaxes for details.

The syntax documented below is XWiki Syntax 2.1 (http://platform.xwiki.org/xwiki/bin/view/Main/XWikiSyntax).

[[wiki syntax here>>Space.Page]]
[[Space.Page]]
(Space is optional and is the current space if not specified)

[[a link]]
[[a link|with title]]

WikiWord or [somelink]
[ desc | pagename ]

[[page name]]
[[page name | link text]]
[[link text -> page name]]
[[#anchor]]
[[#anchor|link to anchor]]
[[page name #anchor]]

[[wiki syntax here>>http://www.xwiki.com]]
http://www.xwiki.com

[http://example.org The title]

http://someserver/someurl
[ desc | exturl ]

http://....
[[http://... | link text]]
[[link text -> http://...]]

= Headline
== Subheadline
=== Sub-subheadline
==== etc..

==Section==
===Subsection===
====Sub-subsection====

!!!Headline1
!!Headline2
!Headline3

! Level 1
!! Level 2
!!! Level 3

**bold**

'''bold'''

*bold* or
<strong>bold</strong>

'''bold'''

//Italics//

''italic''

_italics_ or 
or
<em>italics</em>

''italic''

__underline__

<u>underlined</u>

<u>underlined</u>

{+underlined+}

##monospace##

<tt>monospace</tt>

<tt>monospace</tt>
<code>code</code>
<pre>preformatted</pre>
<verbatim>
unparsed text</verbatim>

@@monospace@@

--Strike--

<s>strikethrough</s>

<strike>striked through</strike>

{-strikethrough-}

^^superscript^^

<sup>superscript</sup>

<sup>above</sup>

'^superscript^'

,,subscript,,

<sub>subscript</sub>

<sub>below</sub>

'_subscript_'

image:img.png
image:Space.Page@img.png
[[image:img.png||width="25" height="25"]]
image:http://some/url/img.png

Starting with the xwiki/2.1 syntax, also:
image:icon:cancel

[[Image:wiki.png]]

[ http://foo.org/1.jpg size=30%] 
external image
[Upload:view.jpg align=right size=50x40] 
view uploaded image
[Upload:view.jpg | http://server/external-linkjpg ] 
view and link to another image

https://foo.bar/foo.jpg
Attach:foo.jpg
Attach:foo.jpg"alt/title text" | Caption

(% style="... css here..." %)Text

<center>Centered</center>

<?plugin RawHtml <span align="right"> ?>right<?plugin RawHtml </span> ?>
or <div align="right"> right </div>

%center% centered text
%right% right aligned
%lfloat% left floating text
%rfloat% right floating text
%rframe% right floating frame
%lframe% left floating frame

Non-semantic text indentation through styling:

(% style="... css here..." %)multi line text

Quotes:

> This is a quoted text

: indented line

;: left indent
;;: more left indent

or 
paragraph
and another level 

-> indented text
--> more indentation
-< hanging text
--< more indentation

* List
** list
*** list

* Item 1
** Item 1.2
* Item 2

* list
or
- list

* Item 1
** Item 1.1
* Item 2
alternatively, indented:
* item 1
* item 1.1
* item 2

1. Item 1
11. Item 2
111. Item 3
1. Item 4

# Item 1
## Item 1.2
# Item 2

# list

# Item 1
## Item 1.1
# Item 2
alternatively, indented:
# Item 1
# Item 1.1
# Item 2

; term
: definition

; term : definition

Term:<def>
def

: term : definition

----

----

----

----