Instiki vs. ProWiki vs. TWiki

General Features Instiki ProWiki TWiki
Version
0.30.0
2.0.045
TWiki-6.1.0
Last Release Date
2019-03-01 (7 years ago)
2006-10-14 (19 years ago)
2018-07-16 (7 years ago)
Last Update here
2019-03-04 (7 years ago)
2009-11-28 (16 years ago)
2019-07-19 (6 years ago)
Author
David Heinemeier Hansson, Jacques Distler, Matthias Tarasiewicz
Helmut Leitner
Peter Thoeny, TWiki community
URL
Free and Open Source
Yes
Yes
Yes
License
Ruby's
GPL
GPL
Programming Language
Ruby on Rails
Perl
Perl, JavaScript
Data Storage
Database
Files
Files, RCS
License Cost/ Fee
0
0
N/A
Development status
Mature
Mature
Mature
Intended Audience
general, education
individual Wiki projects, everybody who needs more than a single wiki for a single purpose
Large enterprise; small to medium businesses
System Requirements Instiki ProWiki TWiki
Operating System
UNIX, Windows, MacOS X
Unix / Linux
Linux, Windows, OS-X and other
Root Access
No
No
No
Webserver
Thin (included), or Apache/NGinx (via Passenger)
Apache (probably anything supporting CGI)
Almost any webserver, typically Apache and Ngnix
Other Requirements
Ruby 2.0-2.6
none
RCS (optional), cron/scheduler, fgrep, egrep; Plugins may have additional dependencies
Datastorage Instiki ProWiki TWiki
Text Files
No
Yes
Yes
MySQL
Yes
No
No
PostgreSQL
Yes
No
No
Oracle
Plugin
No
No
SQLite
Yes
No
No
BerkeleyDB
No
No
No
RCS
No
Yes
Yes
Other
Any Rails-compatible back-end datastore can be used.
RcsLite Perl library for version control without external RCS; backend API for other storage
Security/Anti-Spam Instiki ProWiki TWiki
Page Permissions
Yes
Yes
Yes
ACL
No
Yes
Yes
Authentication Backends
Internal authentication; anything Apache supports such as LDAP, NIS, AD, Kerberos
Host Blocking
Yes
Yes
Plugin
Mail Encryption
Unknown
No
Yes
nofollow
Unknown
Yes
Plugin
Blacklist
Yes
Yes
Plugin
CAPTCHA
Unknown
No
Plugin
Delayed Indexing
Unknown
No
Plugin
Development/Support Instiki ProWiki TWiki
# of Consultants
Preconfigured Hosting
No
Yes
Yes
Code Repository
Issue Tracker
Mailing List
Support Forum
Chat Channel
Stars on GitHub
506 ⭐
N/A
N/A
Common Features Instiki ProWiki TWiki
Preview
No
Yes
Yes
Minor Changes
Yes
Yes
Yes
Change Summary
No
Yes
Yes
Page History
Yes
Yes
Yes
Page Revisions
Unlimited
Unlimited
Unlimited
Revision Diffs
Between all
Between all
Between all
Sitemap
Yes
Yes
Yes
Plugin System
No
No
Yes
Special Features Instiki ProWiki TWiki
Unicode Support
Yes
Yes
Yes
Right-to-Left Support
Yes
No
No
Interface Languages
1
English
8
German, English, Spanish, French, Hungarian, Italian, Japanese, Russian
19
Bulgarian, Czech, Danish, German, English, Spanish, Finnish, French, Italian, Japanese, Korean, Dutch, Polish, Portuguese, Russian, Swedish, Ukrainian, Chinese, Chinese Traditional
Email notification
No
Yes
Yes
Comments
No
No
Threaded
Categories
Yes
Yes
Yes
Namespaces
No
Yes
Yes
Conflict Handling
Page Locking
Conflict Resolution
Conflict Resolution
Concurrent Editing
Unknown
Unknown
Unknown
Search
Full Text
Full Text
Full Text
Wiki Farming
Yes
Yes
Optional
Structured Data
No
No
Yes
Links Instiki ProWiki TWiki
CamelCase
Optional
Yes
Yes
Freelinks
Yes
Yes
Yes
Backlinks
Yes
Yes
Yes
InterWiki
Yes
Yes
Yes
SisterWiki
No
Yes
Plugin
Image Links
Yes
Yes
Yes
Windows Shares
No
No
Plugin
Page Redirects
Yes
Yes
Plugin
Syntax Features Instiki ProWiki TWiki
HTML Tags
All
Some
All
Math formulas
Yes
Yes
Plugin
Tables
simple + complex
simple + complex
simple + complex
CREOLE support
No
No
No
Markdown Support
Yes
No
No
Textile Support
Yes
No
Plugin
BBCode Support
No
No
No
Emoticon Images
No
Yes
Yes
Syntax Highlighting
Yes
No
Plugin
Footnotes
Yes
Yes
Plugin
Quoting
Yes
Yes
Yes
Internal Comments
Yes
No
Yes
Custom styles
Yes
Yes
Yes
FAQ Tags
No
No
Yes
Scripting
None
TWiki Markup Language, TWiki variables, JavaScript, extensive API
Content Includes
Yes
Yes
Yes
Feed Aggregation
No
No
Yes
Usability Instiki ProWiki TWiki
Section Editing
No
Yes
Plugin
Page Templates
No
Yes
Yes
Double-Click Edit
No
No
Plugin
Toolbar
No
No
Plugin
WYSIWYG Editing
No
No
Yes
Access Keys
Yes
No
Yes
Auto Signature
Yes
Yes
Yes
Statistics Instiki ProWiki TWiki
Recent Changes
Yes
Yes
Yes
Wanted Pages
Yes
Yes
No
Orphaned Pages
Yes
Yes
Plugin
Most/Least Popular
No
Yes
Yes
Recent Visitors
No
No
Plugin
Analysis
No
Yes
Yes
Output Instiki ProWiki TWiki
Printer Friendly
Print View
Print View
Print View
Mobile Friendly
Yes
Yes
Plugin
Themes & Skins
No
Optional
Yes
RSS Feeds
No
Yes
Yes
ATOM Feeds
Yes
No
Yes
Abbreviations
Yes
Yes
Plugin
Auto-TOC
Yes
No
Yes
Raw Export
Yes
Yes
Yes
HTML Export
Yes
Yes
Yes
XML export
No
No
Plugin
PDF Export
No
No
Plugin
Office Export
Unknown
Unknown
Unknown
Media and Files Instiki ProWiki TWiki
File Attachments
Yes
Yes
Yes
Media Revisions
No
No
Yes
Embedded Flash
No
Yes
Plugin
Embedded Video
Yes
Yes
Plugin
Image Editing
No
No
Plugin
SVG Editing
Yes
Yes
Plugin
MindMap Editing
No
No
Plugin
Media Search
No
No
Contents
Extras Instiki ProWiki TWiki
Calendar
No
Yes
Plugin
Image Galleries
No
No
Plugin
Presentations
Unknown
Unknown
Unknown
Forums
No
No
Plugin
Blogs
No
Yes
Plugin
Ticket System
No
No
Plugin
Chat
Unknown
Unknown
Unknown
Syntax Examples Instiki ProWiki TWiki
Internal Link
[[Some Page]]
[[Some Page|anchor text]]
[[Some Page#anchor]]
[[Some Page#anchor|anchor text]]
CamelCase
Wordlinking
{{free link}}
[page labelforlink]
WikiWord autolink
Otherweb.WikiWord
[[Spaced text]]
[[WikiWord][label]]
External Link
[another site](http://example.com)
http://example.org
InterWiki:page
[some:link labelforlink]
http://twiki.org/ autolink
[[http://twiki.org/][label]]
Headlines
#Level 1#
##Level 2##
###Level 3###
####Level 4####
#####Level 5#####
######Level 6######
= Headline 1 =
== Headline 2 =
=== Headline 3 =
==== Headline 4 =
===== Headline 5 =
====== Headline 6 =
---+ Level 1
---++ Level 2
---+++ Level 3
---++++ Level 4
---+++++ Level 5
---++++++ Level 6
Bold Format
**bold**
'''bold'''
*bold*
Italics Format
_italic_, *italic*
''italic''
_italic_
Underline Format
underlined
{: style='text-decoration:underlined'}
<u>underlined</u>
<u>underline</u>
Monospace Format
`monospace`
<tt>monospace</tt>
=monospaced text= and
<verbatim>
multi line text
</verbatim>
Strikethrough Format
<del>strikethrough</del>
strikethrough
{: style='text-decoration:line-through'}
[[strike]strikethrough text]
<strike>strikethrough</strike>
Superscript Format
<sup>superscript</sup>
<sup>text</sup>
<sup>superscript</sup>
Subscript Format
<sub>subscript</sub>
<sub>text</sub>
<sub>subscript</sub>
Images
![alt text](http://ex.com/image.jpg),
[[image.jpg|alt text:pic]]
http://example.org/file.jpg
Upload:file.gif
[[Image]...options...]
%ATTACHURL%/image.png
http://any.domain/image.png
Aligning Text
p{: style='text-align:left'}
p{: style='text-align:right'}
p{: style='text-align:center'}
p{: style='text-align:justify'}
only as part of tables or citations
[align:left|center|right]
| left |   center   |   right |
or HTML
or CSS
Text Indentation
p
{: style='margin-left:3em'}

> blockquote
: indented line
:: indented line
<blockquote>
multi line text
</blockquote>
Bulleted Lists
* Item 1
** Item 1.1
* Item 2
* bulleted list
** bulleted list
* Item 1
* Item 1.1
* Item 2
Numbered Lists
1. Item 1
1. Item 1.1
2. Item 2
# numbered list
## numbered list
1. Item 1
a. Item 1.a
1. Item 2
Definition Lists
term
: definition
; term: definition
$ Term: Definition
Horizontal Rule
***
----
---
remove Instiki remove ProWiki remove TWiki