Oddmuse vs. DokuWiki vs. PmWiki vs. Foswiki vs. TiddlyWiki

optional, default on:
[[page name]]

optional, default off:
PageName
[PageName] → [1]
[[[page name]]] → [1]
[PageName text] → text
[[page name|text]] → text

Depending on plugins:
[text](page) → text

[[a Link]]
[[namespace:link]]
[[link|With a Title]]

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

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

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

http://example.com/
[http://example.com/] → [1]

optional, default on:
[http://example.com/ text] → text

Depending on plugins:
[text](http://example.com/) → text

[[http://example.com]]
[[http://example.com|With a Title]]

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

External Link
http://foswiki.org/ autolink
[[http://foswiki.org/][label]]

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

Depending on plugins:
## two
### three
== two ==
=== three ==

section
=======

subsection
----------

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

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

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

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

Depending on plugins:
*bold*
**bold*
'''bold'''

**bold**

'''bold'''

*bold*

''bold''

Depending on plugins:
*italic*
/italic/
//italic//
''italic''

//italics//

''italic''

_italic_

//italic//

Depending on plugins:
_underline_
__underline__

__underlined__

{+underlined+}

<u>underline</u>

__underline__

Depending on plugins:
`mono`
##mono##
[code]mono[/code]
<tt>mono</tt>
<code>mono</code>

''monospace''

@@monospace@@

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

{{{monospaced}}}

via bbCode plugin:
[s]strike through[/s]

<del>strikethrough</del>

{-strikethrough-}

<strike>strikethrough</strike>

--strikethrough--

via bbCode plugin:
[sup]superscript[/sup]

<sup>superscript</sup>

'^superscript^'

<sup>superscript</sup>

^^superscript^^

via bbCode plugin:
[sub]subscript[/sub]

<sub>subscript</sub>

'_subscript_'

<sub>subscript</sub>

~~subscript~~

http://example.com/pic.jpg

Depending on plugins:
[[image:Name|Text|URL]] and variants
![text](URL)

{{local.jpg}}
{{http://foo.bar/baz.jpg}}

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

%ATTACHURL%/image.png
http://any.domain/image.png
%IMAGE{"image.png"}%

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

no example known

Plugin

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

| left |   center   |   right |
or HTML
or CSS

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

Depending on plugins:
> text

[quote]
text
[/quote]

: one
:: two

N/A

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

<blockquote>
multi line text
</blockquote>

:indent

> quote

<<<
blockquote
<<<

* one
** two

* item 1
* item 1.1
* item 2

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

* Item 1
* Item 1.1
* Item 2

* Item 1
** Item 1.1
* Item 2

Depending on plugins:
1. one
2. two

# one
## two

- item 1
- item 1.1
- item 2

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

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

# Item 1
## Item 1.1
# Item 2

Depending on plugins:
; term: definition

Plugin

: term : definition

$ Term: Definition

; term
: description

Depending on plugins:
----

----

----

---

----