Personal Wiki

What is a PersonalWiki? It's like WardsWiki, but it's yours. It can be:

a free-form database
a PersonalInformationManager
a journal (see WikiJournaling)

Internet wikis that need a server, but can be run locally

The degree of difficulty for installation varies -- most PHP installations require an Apache Web server, and some may require mySQL as well. Windows users check out XAMPP for an easy-to-use Apache/PHP/MySQL platform.

MediaWiki (The same one that Wikipedia runs on) -- http://www.mediawiki.org/wiki/MediaWiki
MoinMoin (see http://moinmoin.wikiwikiweb.de/MoinMoinAsPim'')
DokuWiki uses PHP, but doesn't require any database, stores content as plain .txt files -- http://dokuwiki.org
PmWiki The data is stored in PmWiki-specific file format (you need to have EasyPHP or some similar software).
ErfurtWiki, uses PHP - but you can either use MYSQL or a textfile mode. The textfile mode makes it very easy to edit the pages locally. (You need to have EasyPHP or some similar software.)
PhpWiki (You also need to have EasyPHP or some similar software.)
RuwikiWiki (in Ruby, see http://ruwiki.rubyforge.org/)
SkAverySimpleWiki (Perl on Apache or IIS)
UseModWiki (in Perl)
WackoWiki (apache, mysql)
WiKit (in TCL/TK)
JspWiki (JSP, flat files)

Personal wikis that come with a server (and need a browser)

CoWiki (http://cowiki.org/) seems dead
ClusterWiki
DidiWiki
EddiesWiki (one of the earliest personal wikis)
- ElreysWikiServer (based on Eddies Wiki 0.95)
- MichelVanDeWeteringsWikiServer (based on Eddies Wiki 1.0; you can do HTML with this version + you can use free links to form a wiki word [ ])
- WxWikiServer (also based on Eddies Wiki 1.0 with many features added or fixed). See: http://www.usemod.com/cgi-bin/mb.pl?WxWikiServer
Gollum - http://github.com/gollum/gollum
- Includes local server and integrates with rack based servers
- Stores plain text files (markdown, org-mode, textile and more) into a git repo
- Maintained by github team
InstikiWiki
Personal Kneaver (http://www.kneaver.com/products/Personal_Kneaver.htm) combines Wiki and Mindmaps.
MiniRubyWiki
MoinMoin (even in Win32, with or without other server, since it come with a optional standalone server)
NotesWiki -- personal desktop Wiki, flat files, tag based, standalone server, GPL, docu only in German available, http://www.jstolberg.de/NotesWiki
OddMuse (for win32; download the installer here http://www.oddmuse.org/cgi-bin/oddmuse/Windows)
PimkiWiki (http://pimki.rubyforge.org) - A Wiki-based PersonalInformationManager for GettingThingsDone
ProjectForum -- the demo version; no need to even start the browser separately; written in TCL; a single exe file
RuwikiWiki (in Ruby, see http://ruwiki.rubyforge.org/)
SoksWiki (in Ruby, imports InStiki and shows WikiLinks to existing pages without any formatting)
SSmS (http://oi-torpedo.com) - A Wiki-based for SMS.
TwikiWindowsPersonal - self-contained version of Twiki (TwikiClone) for windows users. Will run from a usb memory device.
Wikiwig, a WysiWyg Wiki, lite and easy to use (in PHP/MySql)
WindowsWiki - comes with Tinyweb http server in an automatic installer. Requires python be present.
XoYnKi (in Java)

Personal Wikis that don't need a server but require a browser

StickWiki -- simple one-file Wiki
TiddlyWiki -- one-file Wiki implemented in JavaScript. Strong community; many different (and interesting) adaptations at http://trac.tiddlywiki.org/tiddlywiki
- TiddlyWikiClassic -- The original. More mature, has more useful plugins, and requires an additional JSON file stored in the same folder of your tiddlywiki when using Chrome or IE.
- TiddlyWiki5 -- TiddlyWiki rewritten from the ground up based on HTML5 standards in order to to be as future-proof as possible. Currently in beta, lacking many features of the original (using plugins)(3/4/2014).

Stand-alone personal wikis that don't require a server or a browser

More than one operating system
- JreePad -- Java (.jar file); like TreePad, but with wiki-links
- MobileWikiServer, Mac/Windows/Linux Desktop version, http://www.mobilewikiserver.com/1.4.html (Built on SeasideFramework web framework.)
- NoteBook
- WikidPad -- now open source, Windows, Linux, Mac OS X
- WiKit (in TCL/TK) can be run either as a desktop without a server or with a server
  - AKG Wikit -- a fork of WiKit; see http://wiki.tcl.tk/10109
- WiXi -- Wixi is a multi-platform wiki application for the desktop. It is written in python/wxpython and uses txt2tags to convert plain text to many other formats. http://wixi.sourceforge.net/
- ZuluPad -- Mac OS X and Windows - it does not work with the latest versions of OS X and there seems to be no development for any operating system since 2009

Linux, Unix
- Newton -- http://newton.sourceforge.net/
- Tagore -- http://dospeixos.net/projects/tagore/ (a personal desktop wiki for GNOME, using ruby-gnome2) (dead link, redirects to google)
- TomBoy
- ZimWiki, http://www.pardus.nl/projects/ (GTK2-Perl) (Linux/BSD/Windows)
Mac
- MacPersonalWiki -- for OS X only (broken link)
- VoodooPad -- (shareware 24.95) for OS X only
- WikiBrain -- for OS X only (broken link)
- Wikinotes -- http://wikinotes.mug-linz.at/ (no longer available)
Windows
- bLade Wiki -- not just for Windows mobile, not even dependent on it: http://dale.lane.googlepages.com/bladewiki%3Alinks
- ConnectedText -- (commercial $29.95), includes a web or map view of nodes, categories, calendar and full text search
- FlexWikiPad -- not to be confused with FlexWiki or FlexWikiEditor; this one is unconnected (but needs MS.NET Framework)
- HypEdit -- rudimentary plain text wiki; see http://hytext.com/
- LinkedNotes -- (commercial $19.95)
- NoteStudio -- works well on Windows, it's meant to be used with Palm (for PC $39.95 US, for Palm and PC $49.95 US)
- NoteWiki -- no development since 2003
- PepysWiki -- no longer supported
- PpcSoftiKnow -- (commercial; free lite edition, $29 Home edition, $79 Standard edition, $249 Professional edition)
- QuickNotes -- (commercial $15.00 - seems to be discontinued; StoneNotes seems to be successor application)- stonenotes download site not working.
- SdiDesk: This is an app programmed by PhilJones.
- TextWeb -- it has wiki-like links but no wiki formatting. Perhaps better listed under WikiLikeThing
- WikiWriter -- (shareware 39.95)
- WhizFolders -- (Commercial: $25) http://whizfolders.com