TiddlyWiki vs. Oddmuse vs. Pepperminty Wiki vs. Foswiki

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

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

[[Internal Link]]s

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

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

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

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

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

![See the full syntax help here](https://starbeamrainbowlabs.com/labs/peppermint/build/index.php?action=help#20-parser-default)

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

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

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

section
=======

subsection
----------

# Headline

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

''bold''

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

**bold text**

*bold*

//italic//

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

_italics_

_italic_

__underline__

Depending on plugins:
_underline_
__underline__

<u>underline</u>

{{{monospaced}}}

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

`code text`

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

--strikethrough--

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

~~strikethough text~~

<strike>strikethrough</strike>

^^superscript^^

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

sometext^superscript^

<sup>superscript</sup>

~~subscript~~

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

sometext~subscript~

<sub>subscript</sub>

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

http://example.com/pic.jpg

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

![Alt text](http://example.com/path/to/image.png)

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

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

no example known

Col1 | Col2 | Col3
-------|--------|-------
this  | is      | a
mark|down|table

| left |   center   |   right |
or HTML
or CSS

:indent

> quote

<<<
blockquote
<<<

Depending on plugins:
> text

[quote]
text
[/quote]

: one
:: two

> Blockquote

<blockquote>
multi line text
</blockquote>

* Item 1
** Item 1.1
* Item 2

* one
** two

* Item A
* Item B
* Item C

* Item 1
* Item 1.1
* Item 2

# Item 1
## Item 1.1
# Item 2

Depending on plugins:
1. one
2. two

# one
## two

1. A
2. B
3. C

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

; term
: description

Depending on plugins:
; term: definition

$ Term: Definition

----

Depending on plugins:
----

-------

---