XWiki vs. Confluence vs. TWiki vs. Wiki.js

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)

[Page Title]
[Link Title|Page Title#anchor]
[~username]
[^attachment.doc]

WikiWord autolink
Otherweb.WikiWord
[[Spaced text]]
[[WikiWord][label]]

[Link Title](/link/to/page)

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

[http://www.example.com]
[Link Title|http://www.example.com]
[Shortcut Link|PageName@otherwiki]

http://twiki.org/ autolink
[[http://twiki.org/][label]]

[Link Title](https://wiki.js.org)

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

h1. Top Level Heading
h2. Smaller Heading
h6. Smallest Heading

---+ Level 1
---++ Level 2
---+++ Level 3
---++++ Level 4
---+++++ Level 5
---++++++ Level 6

# Header 1
## Header 2
### Header 3

**bold**

*bold*

*bold*

**Bold Text**

//Italics//

_italics_

_italic_

*Italic Text*

__underline__

+underline+

<u>underline</u>

<u>Underline Text</u>

##monospace##

{{monospace}}

=monospaced text= and
<verbatim>
multi line text
</verbatim>

`Monospace Code`

--Strike--

-strikethrough-

<strike>strikethrough</strike>

~~Strikethrough Text~~

^^superscript^^

^superscript^

<sup>superscript</sup>

^Superscript Text^

,,subscript,,

~subscript~

<sub>subscript</sub>

~Subscript Text~

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

%ATTACHURL%/image.png
http://any.domain/image.png

![Image Title](/path/to/image.png)

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

| left |   center   |   right |
or HTML
or CSS

Non-semantic text indentation through styling:

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

Quotes:

> This is a quoted text

<blockquote>
multi line text
</blockquote>

* List
** list
*** list

* one
** one-two
* two
* three

* Item 1
* Item 1.1
* Item 2

- Item 1
- Item 2
- Item 3

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

# one
## one-two
# two
# three

1. Item 1
a. Item 1.a
1. Item 2

1. Item 1
2. Item 2
3. Item 3

; term
: definition

$ Term: Definition

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