Third party libraries used by Sitecore

At Achmea, we made the strategic decision to use Sitecore as platform for all of our websites, we’ve got hundreds of them. To do this at enterprise level, on such a scale, it’s important that we have guidance on infrastructure, development, deployment, security, content, DMS, just to be sure that the stable environment that we deliver, will stay stable. We all know that it’s important to work with the right Sitecore assemblies (correct version) and not to overwrite them. But Sitecore doesn’t only deliver Sitecore assemblies, but 3rd party assemblies as well, for example: Microsoft assemblies, TweetSharp, Facebook API, Google API’s, et cetera. This blogpost tells us what 3rd party components Sitecore ships with, what license is tied to it and what version is delivered. It currently only includes Sitecore 8.0 update 5 and Sitecore 8.1 update 1.

And please try to guess the answer to now: “What is the year of the eldest component that ships with Sitecore?”. You will be surprised 😉

Why is this list important?

All of these components have a history in it’s development lifecycle, may have security issues in older versions and always have a license tied to it. If there’s no license, the components fall under the author’s copyright, which means that you’re not allowed to use that third party component in your software.

Aside from the license issues, make sure that you use the correct version. Sitecore may replace or update the 3rd party components in a future version, which means your software can (and believe me, someday it will) break. There is no guarantee that Sitecore will ship these component in next versions, thus it’s better to be prepared on what to do when things change. Some commercial products are included in the product as well. Questions that I have regarding those products:

  • Do we, as a company, need to have a license as well to use these products, or does the Sitecore license cover this? (Probably it does, but I am not 100% sure)
  • If Sitecore may use the product, for example, Telerik, may we make use of that product in our custom made components as well? For example, when extending content editor functionality? Or do we need to have separate development licenses?

I don’t have answers on those questions yet, but we already asked the question at Sitecore.

The one list

Well, this wall of text finally lead us to the list. I must admit: it was just a desktop research, but I think we are quite complete regarding the versioning. The version info is the “Assembly Info” that I got via ILSpy. I got the most recent versions by looking into github and codeplex repositories, so for some commercial products I really don’t know what the latest version is.

My main concern is that I see some really ancient builds in this list. The eldest component is from 2006! Maybe this list can help Sitecore to upgrade these components to the latest version, for the sake of its ALM 😉


Library Sitecore 8.0
update 5
year Sitecore 8.1 update 1 year Current version year License type  
Telerik.Web.UI.Skins 2012.2.607..35 2012 2015.1.401.45 ?? 2015 License? Telerik UI lib
TweetSharp < 2013 2015 ?? Twitter library
WebGrease 1.6.5135.21930 2014 1.6.5135.21930 1.6 2014 ??  Optimizing javascript
Yahoo.Yui.Compressor 2012 2.7 2014 BSD-2 Compression library
Componentart 2010 2010 2010 2012 2012 ?? Visualization controls
CsQuery  ??  ?? MIT CsQuery is a CSS selector engine and jQuery port for .NET 4 and C#.
DotNetOpenAuth 2011/2012 4.3 2013 Ms-Pl 2012 1.0.1 2012 MPL 1.1 (Mozilla Public License) EcmaScript.NET is an open-source implementation of EcmaScript based on Rhino (JavaScript for Java) written entirely in C#.
Facebook C# SDK < 2012 6.0.10  <2012 Apache License Facebook API
Facebook API  ?? ?? ?? Ms-Pl (Microsoft Public License) Facebook API – not sure about the source…
GoogleApis.Authentication.OAuth2 1.0 2011? 1.0 1.9.3 2015 Apache 2.0 Google OAuth2 library. Very ancient library. Stackoverflow post: “class not supported anymore”
Google.Apis 2011? 1.0 1.9.3 2015 Apache 2.0 Google API library
Google.Apis.Plus.v1 < 2013 1.0 1.9.2 2015 Apache 2.0 Google plus library
Hammock.Clientprofile < 2011 1.0 1.3.1 2013 MIT Rest Wrapper
Html Agility Pack 2012 1.4.9 2014 Ms-Pl HTML Parser that builds a read/write DOM.
Iesi.Collections 2011 2013 No license Enhanced collectrions for .net
IT Hit WebDAV Server .Net v2 2009 V4.0.2416 2015 Found here webdav server engine for net 3.0.3 2015 3.0.3 3.0.3 2015 Apache 2  Search
Mvp.Xml 2.0.2158.1055 2006 2.0.2158.1055 2.3 2007 BSD License From the time before the dinosaurs even didn’t exist
Netbiscuits.OnPremise ??
Newtonsoft.Json 6.0.5 2014 2014 7.0.1 2015 MIT JSON (de)serializer
OAuthLinkedIn ?? ?? ?? ?? ?? Looks like it’s taken from a github source, can’t find the original source
Protobuf-net 2013 2013 2013 Apache 2 Protocol Buffers library for idiomatic .NET
Telerik RadEditor.net2 ?? ?? ?? ?? ??
Stimulsoft Base 2013.1.1600.0 2013 2013.1.1600.0 2013 2015.3 2015 License Reporting technology
Stimulsoft Database 2013.1.1600.0 2013 2013.1.1600.0 2013 2015.3 2015 License Database helper
Stimulsoft Report 2013.1.1600.0 2013 2013.1.1600.0 2013 2015.3 2015 License Reporting technology
Stimulsoft Report Web 2013.1.1600.0 2013 2013.1.1600.0 2013 2015.3 2015 License Reporting technology
Stimulsoft Report Web Design 2013.1.1600.0 2013 2013.1.1600.0 2013 2015.3 2015 License Reporting technology
Telerik.Web.UI 2012.2.607.35 2013 2015.1.401.45 2015 2015 ?? Reporting technology
Ninject 2015 2015 3.2 2015 Ms-Pl Lightweight dependency injection for .NET
ASP.Net MVC 5.1.0 2014 5.2.3 2015 5.2.3 2015
System.Web.Webpages 3.0 2013 3.0 2013 3.2.3 2015
System.Net.Formatting 4.0 ? 5.2.3 2015 5.2.3 2015


Quite some third party components are delivered with Sitecore, some are up to date, and some are really ancient. This list can help you to decide whether or not to allow a component to be used in your custom code and whether or not the license tied to the component will have impact on your company from a legal perspective.

4 thoughts on “Third party libraries used by Sitecore

  1. Sean Holmesby (@seanholmesby)

    Nice work.
    As mentioned previously, I’ve generated the corresponding packages.configs for the Nuget packages of these DLLs.
    I’ve included a link in the comments section in those gists to point to this post for more information about the licenses.

    Here are the links:-
    Sitecore 8.0 – Update 5 –

    Sitecore 8.1 – Update 1 –


  2. Hadi

    Hi Buddy, this is great article.

    However, can you let me know why Sitecore use the version of google apis? Currently I implement custom web service that pull data from Google Analytics using google apis version 1.9.2. If I replace it with the version I am using now..Will it be a problem with sitecore functionality?

    Thanks for you help



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