ikiwiki vs. Instiki vs. Wikidot

General Features ikiwiki Instiki Wikidot
Version
2.67
0.30.0
Last Release Date
2008-10-17 (17 years ago)
2019-03-01 (7 years ago)
Last Update here
2008-10-28 (17 years ago)
2019-03-04 (7 years ago)
2009-12-09 (16 years ago)
Author
Joey Hess and the ikiwiki community
David Heinemeier Hansson, Jacques Distler, Matthias Tarasiewicz
Michal Frackowiak
URL
Free and Open Source
Yes
Yes
Yes
License
GPL
Ruby's
AGPLv3
Programming Language
Perl
Ruby on Rails
Data Storage
Files, RCS
Database
Database
License Cost/ Fee
0
0
Free / Paid Accounts (starts from $5 per month)
Development status
Mature
Mature
Mature
Intended Audience
Anyone
general, education
companies, private users, social groups and communities, software developers, tech geeks
Hosting Features ikiwiki Instiki Wikidot
Storage Quota
N/A
N/A
1500MB for free users, more for Pro accounts
Bandwidth Quota
N/A
N/A
no limit
Other Limits
N/A
N/A
max uploaded file size limit
Topic Restrictions
N/A
N/A
by Terms Of Service
Corporate Branding
N/A
N/A
Yes
Own Domain
N/A
N/A
Yes
Ads allowed
N/A
N/A
Yes
System Requirements ikiwiki Instiki Wikidot
Operating System
Any
UNIX, Windows, MacOS X
Root Access
No
No
No
Webserver
Any, or none
Thin (included), or Apache/NGinx (via Passenger)
Other Requirements
Ruby 2.0-2.6
Datastorage ikiwiki Instiki Wikidot
Text Files
Yes
No
Unknown
MySQL
No
Yes
Unknown
PostgreSQL
No
Yes
Yes
Oracle
No
Plugin
Unknown
SQLite
No
Yes
Unknown
BerkeleyDB
No
No
Unknown
RCS
Yes
No
Unknown
Other
Any Rails-compatible back-end datastore can be used.
Security/Anti-Spam ikiwiki Instiki Wikidot
Page Permissions
Yes
Yes
Yes
ACL
Yes
No
Yes
Authentication Backends
Built-in, HTTP auth, OpenID; extensible via plugins
Host Blocking
Yes
Yes
Yes
Mail Encryption
Yes
Unknown
No
nofollow
No
Unknown
Yes
Blacklist
Yes
Yes
Yes
CAPTCHA
No
Unknown
Yes
Delayed Indexing
No
Unknown
Yes
Development/Support ikiwiki Instiki Wikidot
# of Consultants
Preconfigured Hosting
No
No
Yes
Code Repository
Issue Tracker
Mailing List
Support Forum
Chat Channel
Stars on GitHub
N/A
506 ⭐
N/A
Common Features ikiwiki Instiki Wikidot
Preview
Yes
No
Yes
Minor Changes
No
Yes
Yes
Change Summary
Yes
No
Yes
Page History
Yes
Yes
Yes
Page Revisions
Unlimited
Unlimited
Unlimited
Revision Diffs
Between all
Between all
Between all
Sitemap
Plugin
Yes
Yes
Plugin System
Yes
No
No
Special Features ikiwiki Instiki Wikidot
Unicode Support
Yes
Yes
Yes
Right-to-Left Support
Yes
Yes
Yes
Interface Languages
1
English
1
English
2
English, Polish
Email notification
Yes
No
Yes
Comments
Discussion Pages
No
Threaded
Categories
Plugin
Yes
Yes
Namespaces
Yes
No
Yes
Conflict Handling
Conflict Resolution
Page Locking
Page Locking
Concurrent Editing
Unknown
Unknown
Unknown
Search
Full Text
Full Text
Full Text
Wiki Farming
Yes
Yes
Yes
Structured Data
Unknown
No
Yes
Links ikiwiki Instiki Wikidot
CamelCase
Plugin
Optional
No
Freelinks
Yes
Yes
Yes
Backlinks
Yes
Yes
Yes
InterWiki
Plugin
Yes
Yes
SisterWiki
Plugin
No
No
Image Links
Yes
Yes
Yes
Windows Shares
Yes
No
No
Page Redirects
Unknown
Yes
Yes
Syntax Features ikiwiki Instiki Wikidot
HTML Tags
Optional
All
None
Math formulas
Plugin
Yes
Yes
Tables
simple + complex
simple + complex
simple + complex
CREOLE support
No
No
No
Markdown Support
Yes
Yes
No
Textile Support
Plugin
Yes
No
BBCode Support
No
No
No
Emoticon Images
Plugin
No
No
Syntax Highlighting
Plugin
Yes
Yes
Footnotes
No
Yes
Yes
Quoting
Yes
Yes
Yes
Internal Comments
Yes
Yes
Yes
Custom styles
Yes
Yes
Yes
FAQ Tags
Yes
No
No
Scripting
safe subset of HTML::Template supported via template plugin
None
CSS styles, embeddable JavaScript, reporting language
Content Includes
Plugin
Yes
Yes
Feed Aggregation
Plugin
No
Yes
Usability ikiwiki Instiki Wikidot
Section Editing
No
No
Yes
Page Templates
Yes
No
Yes
Double-Click Edit
No
No
No
Toolbar
No
No
Yes
WYSIWYG Editing
No
No
No
Access Keys
No
Yes
Yes
Auto Signature
No
Yes
Yes
Statistics ikiwiki Instiki Wikidot
Recent Changes
Yes
Yes
Yes
Wanted Pages
Plugin
Yes
Yes
Orphaned Pages
Plugin
Yes
Yes
Most/Least Popular
No
No
No
Recent Visitors
No
No
No
Analysis
No
No
Yes
Output ikiwiki Instiki Wikidot
Printer Friendly
Print CSS
Print View
Print View
Mobile Friendly
Yes
Yes
Optional
Themes & Skins
Yes
No
Yes
RSS Feeds
Plugin
No
Yes
ATOM Feeds
Plugin
Yes
No
Abbreviations
No
Yes
No
Auto-TOC
Plugin
Yes
Yes
Raw Export
Yes
Yes
Yes
HTML Export
Yes
Yes
No
XML export
No
No
No
PDF Export
No
No
No
Office Export
Unknown
Unknown
Unknown
Media and Files ikiwiki Instiki Wikidot
File Attachments
Yes
Yes
Yes
Media Revisions
Yes
No
No
Embedded Flash
Optional
No
Yes
Embedded Video
Optional
Yes
Yes
Image Editing
No
No
No
SVG Editing
No
Yes
No
MindMap Editing
No
No
No
Media Search
Filenames only
No
No
Extras ikiwiki Instiki Wikidot
Calendar
Plugin
No
Optional
Image Galleries
Plugin
No
Yes
Presentations
Unknown
Unknown
Unknown
Forums
Unknown
No
Yes
Blogs
Yes
No
Yes
Ticket System
Yes
No
Yes
Chat
Unknown
Unknown
Unknown
Syntax Examples ikiwiki Instiki Wikidot
Internal Link
[[internal]]
[[Some Page]]
[[Some Page|anchor text]]
[[Some Page#anchor]]
[[Some Page#anchor|anchor text]]
[[[page-name]]] or
[[[page-name|anchor]]]
External Link
[link text](http://example.org)
[another site](http://example.com)
http://www.wikimatrix.org or 
[http://www.wikimatrix.org WikiMatrix]
Headlines
Two syntaxes:

# heading 1
## heading 2
### heading 3

heading 1
=========

heading 2
---------
#Level 1#
##Level 2##
###Level 3###
####Level 4####
#####Level 5#####
######Level 6######
+++ headline level 3
Bold Format
**bold**
__bold__
**bold**
**bold text**
Italics Format
*emphasized*
_emphasized_
_italic_, *italic*
//italic text//
Underline Format
via HTML: <u>underlined</u>
underlined
{: style='text-decoration:underlined'}
__underlined text__
Monospace Format
`inline monospace`

indented block of
monospaced text

tab-indented
block
`monospace`
{{monospaced text}}
Strikethrough Format
via HTML: <del>deleted</del>
<del>strikethrough</del>
strikethrough
{: style='text-decoration:line-through'}
--strikethrough text--
Superscript Format
via HTML: x<sup>2</sup>
<sup>superscript</sup>
^^superscript^^
Subscript Format
via HTML: a<sub>1</sub>
<sub>subscript</sub>
,,subscript,,
Images
![alt text](internal/image)
![alt text](http://example.org/external/image)
![alt text](http://ex.com/image.jpg),
[[image.jpg|alt text:pic]]
[[image src="..."]]
Aligning Text
p{: style='text-align:left'}
p{: style='text-align:right'}
p{: style='text-align:center'}
p{: style='text-align:justify'}
= Centered line
Text Indentation
p
{: style='margin-left:3em'}

> blockquote
> First level of indentation
>> Second level of indentation.
Bulleted Lists
* item 1
* item 2
* item 2.1
* item 2.2
* Item 1
** Item 1.1
* Item 2
* element 1
* element 2
Numbered Lists
1. item 1
2. item 2
1. item 1.1
42. the value doesn't matter
1. any value works
1. Item 1
1. Item 1.1
2. Item 2
# element 1
# element 1
Definition Lists
via HTML:
<dl>
<dt>term</dt>
<dd>definition</dd>
</dl>
term
: definition
: item : description
Horizontal Rule
---
***
___
------------------
Any number > 3
- - - - - - - - - -
spaces don't matter
***
----
remove ikiwiki remove Instiki remove Wikidot