Silex website builder

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Silex website builder logo.png
Developer(s) Alexandre Hoyau, Pierre Teissière, Pol Goasdoué, founders
Stable release 2.5 / 2015
Operating system Cross-platform
Type Website builder
License GPL
Website Silex official website

Silex is a free website builder, that can be used directly in your browser. The skills needed to edit a website depend on what needs to be done : use the drag and drop / WYSIWYG interface to intuitively edit a website, or the integrated CSS and Javascript editors to add styles and interactivity to the elements.[1][2]

Silex is a free and open source alternative to proprietary website builders like, Weebly, Jimdo or Squarespace.[3]


  • Founded in 2003 by Alexandre Hoyau, Pol Goasdoué and Pierre Teissière. The project is oriented towards video and cross media.[4]
  • In 2005, the version v0-6 is presented at the WWDC2005 in Cupertino California.[5] Apple is interested in Flash capacity to compete with their QuickTime plug-in. Macromedia has just been acquired by Adobe, Apple’s main partner.
  • In 2006, the program was presented in several conferences at La Villette and won a challenge organized by Dauphine high school with INRIA - French National institute for research in computer science and control. The program at this time was mainly used for freelancers small projects.
  • In 2007, Silex source code officially released as open source[6]
  • In 2008, Silex was among the 100 first Open Source projects on SourceForge. Silex v1 is released.[7][8]
  • In 2009, Silex was project of the month on SourceForge.[9] The program was presented Silex at several French conference: Futur en Seine,[10] Les Trophées du Libre,[11] Pas sage en Seine,[12] Wikiplaza [13]
  • In 2010, the team members formalized their cooperation by creating a non profit organization for promotion, deployment support, and development of open source software projects related to Silex and Open Source Flash.[14] The organization became the official maintainer of AMFPHP, a mature communautary project.[15]
  • In 2012, Silex has reached the 100.000 downloads.[16] And the team has made a dedicated version for HTML, the html5 editor,[17] which was downloaded 1000 times on the first month.[18]



  • WYSIWYG environment to edit a publication with drag and drop
  • HTML, CSS and javascript code editors included
  • suitable for prototyping
  • web based, can be installed locally, on a web server or as a portable app
  • free templates and plugins
Free Own your data Type of websites WYSIWYG / Drag'n drop Use of CSS/JS/HTML Widgets and templates Self hosted / downloadable Static web page Technical skills required Time to learn the basics
Silex Yes (foss) Yes Showcase / small websites Yes Yes Yes Yes Yes ** 1h
WordPress Yes (oss) Yes Any type and size No Yes (+PHP) Yes Yes No *** 4h
Wix Yes (freemium) No Showcase / small websites Yes No Yes No No * 1h
Jekyll Yes (foss) Yes Any type and size No Yes Yes Yes Yes **** 4h


External links[edit]