Composite C1 4.0

Rating:        Based on 15 ratings
Reviewed:  14 reviews
Downloads: 8775
Change Set: 26178
Released: Jun 6, 2013
Updated: Oct 9, 2013 by mawtex
Dev status: Stable Help Icon

Recommended Download

Application Composite C1 4.0 (IIS & Visual Studio)
application, 4683K, uploaded May 29, 2013 - 4317 downloads

Other Available Downloads

Application Composite C1 4.0 Debug (C1 Package with DLLs, PDBs and uncrunched javascript)
application, 5302K, uploaded May 29, 2013 - 231 downloads
Application Composite C1 4.0 WebPI (Web Platform Installer Package)
application, 4651K, uploaded May 29, 2013 - 4227 downloads

Release Notes

Composite C1 4.0 (4.0.4897.31550)

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Getting started
If you are new to Composite C1 and want to install it:

What's new in Composite C1 4.0
The following are highlights of major changes since Composite C1 3.2:

General user features:
  • Uploads up to 512MB accepted in the media archive
  • New “Block Selector” in Visual Editor – enable users to create styled div, blockquote etc. elements (not yet available in IE)
  • IE9 and IE10 run in standards mode and have very good performance
  • Support for older IE7 and IE8 dropped
  • IE10 has spell checking in all input fields (like Firefox)
  • When media files are updated (like uploading a new image on top of an existing one) all client caches are automatically invalidated
  • Drop down menus support searches
  • Free hand image re-size in visual editor - images resized server side
  • New URL combobox widget allow for both internal URLs and a typed URL
  • The C1 Console tree showing website pages now use the 'Menu Title' for labels
  • New starter site (bootstrap/less/razor)

Developer features:
  • Support for .NET 4 and .NET 4.5
  • ASP.NET Razor, Web Forms and Master pages are now 1st class citizens
  • Support for inline SVG in page html, function output etc.
  • Data type editor let you make XHTML fields with one click.
  • Data type Editor now enable you to control sorting on tree elements
  • Public API expanded -
  • VisualEditor; code view; setting attributes on <body/> now kept and lifted to rendered page.
  • Visual Editor pick up on CSS/LESS file changes and next load.
  • Support CDATA sections - enable unstructured markup to be placed in function output.
  • New C1 Functions HtmlTitleValue and MetaDescriptionValue (namespace Composite.Web.Htm.Template) which will output final title and description of a page.
  • Adding head element filtering (filtering on duplicate meta tag definitions, duplicate script and css includes).
  • Page Template supports Razor and Master pages with full C1 Console edit support in the Layout perspective
  • Razor Functions and User Control Functions known from C1Contrib build in, added to public API and manageable from within the C1 Console
  • In Layout perspective, New "Page Templates Features" allow you to maintain templates elements (like footer texts, navigation and aside columns functions) in a code free environment.
  • Code editor has razor syntax highlighting
  • ASP.NET Sitemap provider support
  • Copy XSLT Functions
  • OnStoreChange data event introduced for better scale out support
  • IFormLoginProvider and related types now exposed in the public API
  • RenderingResponseHandler and related types now exposed in the public API
  • Error boxes shown when a C1 Function fail on a page look better than ever. Highlighting the offending line etc.

  • New "HTTPS Enforcer" feature on the C1 Console (see - easy config to make the C1 Console either force HTTPS or be unavailable.
  • Install and perform well on Azure Websites.
  • Now possible to delete (or not copy) the "/Composite" folder on a deployment.
  • The C1 Console "Tools | Server Log" now offer filtering of event types '
  • XML data files serialize elements sorted by primary key. Makes use with code versioning systems easier.
  • Changes to XML data files are picked up. Data is reloaded and OnStoreChange are fired, updating all relevant Composite C1 caches.

Upgrade guidelines
You can upgrade from 4.0 beta releases and earlier versions of Composite C1 - upgrading gives you access to all 4.0 features, fixes and packages.

Manual upgrade from 3.2 and earlier:

Supported and automated upgrade
For automated and supported upgrade tool see

Upgrading from 4.0 Beta:
  1. Take a backup of your website
  2. Launch the C1 Console
  3. Go to System | Packages | Available Packages | Composite.Updates
  4. Select "Package Info" on the update available and click "Install"


Reviews for this release

Overall, its a very good CMS, one of the better ones out there. The biggest downfall is the blog add-on. For content-heavy sites that require a decent blogs, Composite C1 4.0 can be frustrating. Be prepared to do a lot of custom coding to get a lot of basic blog functionality ...I believe this has gotten worse since previous version. It's a great CMS with a poor blogging add-on.
by clayhenry on Oct 8, 2013 at 4:57 PM
The 4.0 release finally adopted many of the standard Asp.Net api's and functionality which has been possible to use through the Contrib project. As a .Net developer this is a fantastic release which really excels by not just embracing features, but integrate them so well that the developing experience is pure joy. Its a very big release that has been underway for like a year, so its impossible to comment on all its new features. As a developer i especially welcome the shift in focus away from XSLT and towards Razor and other mainstream technologies.
by burningice on Dec 18, 2013 at 11:47 AM
An excellent piece of software for both developers and users. Extremely easy to install, Intuitive UI for content managers. Performance of the sites is very good. Our dev team has tried several CMS's (including paid up ones) to combine MVC web app funtionality with a traditional CMS and this is by far and away the best one we have come across. Forum response to queries is also excellent. Well done
by stevecrabb on Oct 13, 2013 at 12:17 PM
We had some trouble with our Composite site that turned out to be related to some IIS configuration changes we made. But the people working on Composite were there to help. The translation workflow for multi-lingual sites works perfectly for us. Overall we're very happy with Composite.
by mvarblow on Oct 8, 2013 at 6:06 PM
Excellent piece of CMS... You will need very little time to start being amazed how easy and simple is to build what you need! As .Net developer I am thrilled! You will be too ;-)
by JaZGo on Sep 30, 2013 at 10:15 PM
The new version of Composite C1 - 4.0 - continues the high quality of it's previous versions. Highly recommended for all kind of websites.
by ThorstenH on Aug 12, 2013 at 8:18 AM
I'm amazed at the level of customization that one can achieve with this product. It's simple baffling that it's 100% free and the support through the forums is fantastic. The ability to integrate easily with azure and use Razor is great. With everything being LINQ friendly it's also simple to query C1 objects and get to the information you need. Only down side is the API could use some work
by TheRocket786 on Aug 9, 2013 at 1:42 AM
From a designers point of view composite C1 V4 is best CMS available. Never before have I seen a CMS that is so naturally intuitive, easy to use and setup for developers & designers. Also for editors to manage the site. The sky is the limit with composite for every type of site from small business sites to large scale sites with 100+ users with all different security levels.
by ewebdzine on Aug 8, 2013 at 5:59 PM
I can't recommend Composite C1 highly enough, it’s up and running in no time at all and once running it flies along with minimal resource usage. Content editing is straight forwards and the system is easy to customise, I especially like the new Razor templates and functions!
by Padwah on Aug 6, 2013 at 9:34 PM
Simply the best CMS out there. No CMS is easier to built great, scalable and maintainable websites on.
by sorenjuul on Aug 6, 2013 at 8:52 PM
After months of waiting for a so called professional design studio to provide my wifes business with a CMS system I gave up on them and within 48 hrs had a Composite Site up and running. Great Content manager my wife can easily manage the site without needing me! Check it out -- Meir Rotfleisch
by livingfree on Aug 6, 2013 at 3:52 PM
Orchard took me weeks and I gave up. Umbraco failed right up front. Composite C1 - up and running in seconds, everything is really lightweight, just works - don't even need to open Visual Studio or use a database (unless you want to). Awesome power - awesome simplicity - awesome speed; you wont regret it.
by niico on Aug 6, 2013 at 1:30 PM
Using the Windows Azure Composite C1 template I had a website up and running within an hour. With an easy interface to edit it's content with. Love it.
by iaresean on Jun 25, 2013 at 9:27 AM
Awesome release, impressive code quality. The best open source .NET CMS on the market! Our first choice for all projects. Thanks Composite!
by skoenigpi on Jun 13, 2013 at 1:45 PM