What names do you find yourself prepending/appendi

Question

Which nouns do you find yourself putting regularly at the end of your classes?

For example, I have a habit of sticking Info onto classes that pass information around but don't do a great deal:

• ImportInfo
• SiteInfo

Or for Coordinating classes:

• UserManager
• SecurityManager

I end up using Builder quite often for string related classes, even if it barely does any building:

• TemplateBuilder
• HtmlBuilder

And of course the timeless Helper/Utility class:

• PhraseHelper
• NumberUtility
• FileHelper

Have you got any good, by which I mean concise and descriptive, nouns or words you regularly use to denote the class' main role?

This question is aimed at the .NET world, but can extend to Java, C++, Python and so on.

Answer 1

Tests for unit test classes

Answer 2

• Factory
• Helper
• Utils
• Job
• Entity

Answer 3

On occasion I use

Target

As in

• UploadTarget
• ProcessingTarget

I don't think I had before Silverlight / WPF but I now also use

Converter

As in:

• CurrentTimeDisplayConverter
• TimeDeltaConverter

Answer 4

I am often using :

• Protocol (Specific protocol implementation)
• Manager (Class managing the process)
• Emulator (Emulate something...)

Answer 5

I use Provider and Helper a lot.

Answer 6

I append pattern name at the end if i follow one (i.e. FooRepository).
Trying to avoid -Helper, -Manager, -Utils.