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RemoteBridge is a library that allows you to access internal COM and JAVA objects used by third-party applications remotely. This product was designed to support new and legacy products were source code is unavailable or modifications costs are expensive.

Once you get access to an object using the RemoteBridge interface, you can interact with it in any way, for e.g., setting/getting properties, calling methods, etc., like if you were running custom injected code inside the target application.

Most of times, objects managed by an application are not accessible from outside. Also, although you can inject and hook custom code in an application, those kind of objects cannot be easily reached.

RemoteBridge hooks the target application and inspects all COM and JAVA activity. You will be able to see all COM objects like if they were local to your application. It also creates a wrapper interface for all JAVA objects.

RemoteBridge uses a COM interface supported by most programming languages such as C++, Delphi, VB, VBA, VB.SCRIPT, VB.NET, C# and Python. COM objects used by the third-party application will be directly available as COM-proxy objects in your code. For Java ones, an interface named INktJavaObject is provided as a wrapper.

The examples provided will show the power of this library. For e.g.,

  • Inspect the new IFileOpenDialog COM object (introduced in Windows Vista) used in the classic File Open dialog box and retrieve the current typed file name.
  • Retrieve the internal IHTMLDocument2 COM object in Internet Explorer, add a custom OnDocumentComplete event handler and modify page HTML code.
  • Add custom panels and change object properties in the Java Notepad application provided in the Java Development Kit.
  • Inject custom Java code into a target application and interact with it by executing methods and listening to events.


To use RemoteBridge you must have the following:

  • IBM PC or compatible.
  • Microsoft Windows XP or later.
  • Visual Studio 2012 with Update 4 (or newer) installed.


Download RemoteBridge from GitHub by executing the following Git command:

git clone --recursive

Instead, if you decide to downloaded the .zip file from GitHub , uncompress it in an empty folder and then download and uncompress the Deviare In-Proc dependency (from inside the following subdirectory: "Dependencies\Deviare-InProc".

To use the library in your project, add the reference to the COM object located in RemoteBridge.dll or RemoteBridge64.dll depending on the target platform.

A C# assembly is also provided. If you use RemoteBridge in C# we strongly recommend to add the Nektra.RemoteBridge.dll reference instead.

RemoteBridge supports RegFree-COM model by adding the corresponding manifest file to your application. If you want to use the standard COM mechanism, remember to register RemoteBridge.dll and/or RemoteBridge64.dll using the RegSvr32 utility located in the "%sysroot%\system32" folder.


  1. The following interfaces are not hookable. They are mainly used by OLE32 internally and most of them are not available to the end user:

    IID_IGlobalInterfaceTable, IID_IRunningObjectTable, IID_IAggregator, IID_IMarshal, IID_IStdMarshalInfo, IID_IdentityUnmarshal, IID_IRemUnknown, IID_IRundown, IID_IPSFactory, IID_IPSFactoryBuffer, IID_IMultiQI, IID_IProxy, IID_IRpcChannel, IID_IRpcHelper, IID_IRpcOptions, IID_IRpcStub, IID_IRpcStubBuffer, IID_IRpcProxy, IID_IRpcProxyBuffer, IID_IStubManager, IID_IProxyManager, IID_IRpcChannelBuffer, IID_IAsyncRpcChannelBuffer, IID_IRpcSyntaxNegotiate, IID_IInternalMoniker, IID_IChannelHook, IID_IClientSecurity, IID_IServerSecurity, IID_ICallFactory, IID_IReleaseMarshalBuffers, IID_IComThreadingInfo, IID_IContext & IID_IObjContext.

  2. Some interfaces requires to be registered in order to work (specially those using a non-standard marshalling mechanism). If you can't access an object, check if it is registered in Windows' Registry.

  3. Some interfaces are not instantiated as expected. For e.g., if you hook the IHTMLDocument interface that belongs to the CLSID_HtmlDocument object, you may encounter that the object is created using the IUnknown interface instead. Use the 'flgDebugPrintInterfaces' flag to get information about how different interfaces are instantiated.


If you experience something you think might be a bug in RemoteBridge, please report it in GitHub repository or write us in

Describe what you did, what happened, what kind of computer you have, which operating system you're using, and anything else you think might be relevant.


This library has a dual license, a commercial one suitable for closed source projects and a GPL license that can be used in open source software.

Depending on your needs, you must choose one of them and follow its policies. A detail of the policies and agreements for each license type are available in the LICENSE.COMMERCIAL and LICENSE.GPL files.

For further information please refer to or contact Nektra here

This library uses a portion of UDis86 project, authored, copyrighted and maintained by Vivek Thampi. UDis86 is licensed under the terms of BSD License. For any questions referring to UDis86 contact the author at <vivek[at]sig9[dot]com>.


RemoteBridge is a library that allows you to access internal COM and JAVA objects used by third-party applications remotely.



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