I am trying to find a reasonably mature/stable and freely available (preferably open-source) library for doing AOP in .NET. I've been searching around a bit and found the products below; however, most of them seem dead:
PostSharp — this is the AOP solution usually recommended for .NET, however it's a commercial product and thus some use restrictions apply. (However, it seems to be sort-of freely available for personal or open-source projects.)
Spring.NET — not exclusively about AOP, so it's probably too powerful if one only wants to do AOP. (?)
Policy Injection Application Block — being from Microsoft, I would expect this to be at least maintained.
Castle Windsor together with DynamicProxy — not primarily an AOP library, but apparently it can be used for that purpose.
Aspect# — this seems quite dead to me.
Aspect.NET — this also seems quite dead to me.
NAop — apparently no longer supported.
AOP.NET — this was supposed to be the successor to NAop, and also looks like it died a while ago.
There's probably even more. From the above list I gather that the only real options for doing AOP on .NET is PostSharp (even though it's a commercial product), Spring.NET, Microsoft's Policy Injection Application Block, or perhaps Windsor.
Did I forget any major option?
See also the question Suggestions for open source aspect-oriented library for C# here on StackOverflow. I posted a new question because I'm specifically interested in the state of development/maintenance of various AOP solutions for .NET.