TiddlyWiki vs. MediaWiki vs. Confluence vs. MoinMoin

WikiWord (CamelCase)
[[link]]
[[label|link]]

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

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

CamelCaseLink or [[free link]]

[[target|label|params]]

http://www.example.com
[[label|http://www.example.com]]

[http://example.org The title]

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

http://google.de/ or
[[http://google.de/ | Google]] or
file://///server/share/file

! Level 1
!! Level 2
!!! Level 3
!!!! Level 4
!!!!! Level 5

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

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

= Level 1 =
== Level 2 ==
=== Level 3 ===
==== Level 4 ====
===== Level 5 =====

''bold''

'''bold'''

*bold*

'''bold'''
'''strong emphasised'''

//italic//

''italic''

_italics_

''italic''
''emphasised''

__underline__

<u>underlined</u>

+underline+

__underline__

{{{monospaced}}}

<tt>monospace</tt>

{{monospace}}

`monospaced`

--strikethrough--

<s>strikethrough</s>

-strikethrough-

--(strikethrough)--

^^superscript^^

<sup>superscript</sup>

^superscript^

^superscript^

~~subscript~~

<sub>subscript</sub>

~subscript~

,,subscript,,

[img[local.jpg]]
[img[http://foo.bar/foo.jpg]]

[[Image:wiki.png]]

{{http://foo.bar/foo.jpg}}
{{attachment:foo.jpg | alt text}}
{{target|alt|params}}

using custom classes, e.g.
{{right{
text
}}}

<center>Centered</center>

only in tables:
||<(> left ||<:> middle ||<)> right ||

:indent

> quote

<<<
blockquote
<<<

: indented line

indented text

* Item 1
** Item 1.1
* Item 2

* Item 1
** Item 1.2
* Item 2

* one
** one-two
* two
* three

* Item 1
* Item 1.1
* Item 2

# Item 1
## Item 1.1
# Item 2

# Item 1
## Item 1.2
# Item 2

# one
## one-two
# two
# three

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

; term
: description

; term : definition

term:: definition

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