Hi,
You can download the latest versions from:
Aspose.Words - http://www.aspose.com/community/files/51/.net-components/aspose.words-for-.net/default.aspx
Aspose.Cells - http://www.aspose.com/community/files/51/.net-components/aspose.cells-for-.net/default.aspx
Aspose.Network - Aspose.Network is now part of Aspose.Email and latest version of Aspose.Email can be downloaded from http://www.aspose.com/community/files/51/.net-components/aspose.email-for-.net/default.aspx
Aspose.Pdf - http://www.aspose.com/community/files/51/.net-components/aspose.pdf-for-.net/default.aspx
Aspose.Pdf.Kit - This is now part of Aspose.Pdf and its clsses can be found in Aspose.Pdf.Facades namespace. You can download the latest version from http://www.aspose.com/community/files/51/.net-components/aspose.pdf-for-.net/default.aspx
Aspose.Slides - http://www.aspose.com/community/files/51/.net-components/aspose.slides-for-.net/default.aspx
The DLLs which are inside net2.0 folder of the installation directory can be used with any version of .NET. If you want to use .NET 3.5 specific versions, you can use the DLLs from net3.5 folder but this folder is not present in all APIs. As a general rule, if net3.5 folder is present, you can use DLL from that folder but if this folder is not present, you can use the DLL from net2.0 folder.
Regarding client profile folders, these DLLs can be used in client profile applications only. Because client profile appications do not support System.Web and some other libraries, so these versions do not use these namespaces. You should not use these DLLs if you are not building client profile applications.
Please feel free to contact us in case you have further comments or questions
Best Regards,