Pajek: analysis and visualization of large networks

Ver. 32 bit 64 bit
Feb 1,
5.01 Web Start
Pajek Web Start  PajekXXL Web Start
Install Shield
Web Start
Pajek Web Start PajekXXL Web Start Pajek3XL Web Start
Install Shield
Book Ed.2.05 zip zip
Pajek mailing list        Datasets
Richards Software Award 2013
Greek Chinese Spanish Persian Japan French Great Britain Portuguese German lithuanian Italia Poland Slovene
Pajek Manual Exploratory Social Network Analysis with Pajek: Revised and Expanded Second Edition Exploratory Social Network Analysis with Pajek - in Japanese. Exploratory Social Network Analysis with Pajek - in Chinese.

What is new in Pajek 5.01?

Feb 1, 17 Pajek 5.01: Another version of Pajek proposed for analysis of huge networks - Pajek3XL - is now available. The highest number of vertices that Pajek64-3XL can handle is ten billion (9.999.999.997). Details.
Jan 17, 17 Files read recently (e.g. networks, partitions, ini files,...) are now added as items to File menu. In this way files can be read by Pajek without exploring hard drives.
Dec 26, 16 Bug when reading GEDCOM files as p-graphs fixed.
Nov 15, 16 Bug when tabulators were used instead of spaces in input file - vertices with shapes different from ellipses were not drawn correctly in Draw window.
Aug 15, 16 Maximum number of networks in SVG sequence increased to 9999 (exporting to SVG with Export / SVG / Current and all Subsequent checked).
July 26, 16 Appending networks to project file to be later used by PajekToSVGAnim (Export / Append to Pajek Project File) is now recorded to log files as well. That means that Macro / Repeat Last Command can be used - sequence of networks can be appended to PAJ file with a single click.
July 15, 16 Pajek adapted to and recompiled with the latest version of Delphi and MtxVec.
May 14, 16 In addition to extracted SubNetwork, corresponding Partition and/or Vector can be sent from PajekXXL directly to Pajek too.
May 13, 16 Sending Network from PajekXXL to Pajek is now the first item in Tools menu (it is not an option in Network menu anymore).
May 10, 16 Pajek 4.10: ...Complete history since November 15, 1996...

Some hints on Pajek

  Start with the latest version of Pajek

       Changes in main menu structure from Pajek book edition (2.05) to the latest version of Pajek
       Start with Pajek, Test Datasets, More Datasets
       Course on Social Network Analysis with Pajek, supporting programs

  Running Pajek on MAC and Linux

      Running Pajek on MAC
      Running Pajek on Linux
      Running Pajek on Linux64

  Info on Pajek / Introduction to Pajek in different languages

       English: by Andrej Mrvar and Vladimir Batagelj
       Greek: by Dimitrios Rousis
       Italian: by Fernanda Strozzi
       Persian: by Aliakbar Akbaritabar
             1. Videos (by Michael Henninger): 1, 2, 3
             2. by Vladimir Batagelj and Andrej Mrvar
             1. by Marion Maisonobe
             2. by Pierre Mercklé
             1. by Universidad Nacional del Sur (Argentina)
             2. by Alejandro A. Ruiz León and Nina Ines Jung
             1. by Ivette Luna
             2. by Andre M. Sarmento
             1. Videos: 1.1, 1.2, 2.1, 2.2, 3, 4.1, 4.2, 5.1, 5.2, 6.1, 6.2, 6.3.
             2. by Andy Chang
             3. by Feng Lin
             1. by Japan Advanced Institute of Science and Technology
             2. by Yuki Yasuda and Takahisa Wakabayashi
             1. by Dominik Batorski
             2. laboratorium-pajek-1
             3. laboratorium-pajek-2
       Lithuanian: by Gintarė Tautkevičiėnė
             Pajek manual (by Andrej Mrvar)
             Course on Social Network Analysis with Pajek (by Andrej Mrvar)
             Pajek - 20 years (by Andrej Mrvar)

  PajekXXL and Pajek3XL: About, Example 1, Example 2

  Community Detection in Pajek and PajekXXL

      Detecting communities in Pajek and Pajek XXL
      Visualizing communities in Pajek
      Comparing Louvain method and VOS Clustering
      Example of visualizing communities in collaboration network (provided by James Moody)

  Signed Networks in Pajek

      Papers, visualizations, animations, instructions...

  Analysis of Genealogies with Pajek

      Papers, presentations, fragments, macros...

  Using Unicode, LOG and MCR files

       Using Unicode in Pajek
       Macros and session (LOG) files

  SVG, EPS and VOS Visualizations

       Exporting Visualizations to VOSviewer
       Example of using Tooltips in SVG export
       Bezier curves as default shapes of lines in Pajek
       Animations of the Correlates of War data
       Some visualizations with symbols
       Drawing edges and arcs transparently in Pajek
       Drawing vertices transparently in Pajek
       Solving the problem of unwanted visibility of lines behind transparent vertices in Pajek
       house, man, and woman as additional shapes

  Supporting programs

       PajekToSvgAnim (by Darko Brvar): Zip (version, August 19, 2016), TestData, Manual
       txt2Pajek (by Juergen Pfeffer): Create Pajek files from text files (version 3)
       NeuroData's Graph Database Online converter among several network formats (including Pajek)
       Web Crawlers with export to Pajek: SocSciBot, UrlNet
       socilab (by Craig Tutterow): Visualize your LinkedIn Network and save it as Pajek NET file
       Visual History for Chrome (by Samer Kurdi): Chrome extension that presents URLs visually,
           as an interactive chart and saves it as Pajek NET file. Download

  Questions regarding Pajek

       Pajek mailing list