Aspose.Excel.Express   
http://www.aspose.com

Aspose.Excel.Express is the .Net express spreadsheet component. With it, you can: Create REAL Excel spreadsheets with any format, function, chart, picture, comment and even more but without Microsoft Excel; Create your own spreadsheets with ease through fully working examples in C# and VB .Net; Support Excel spreadsheets for Windows Forms applications and Web Forms applications; Use designer Excel spreadsheets with a simple set of API to create files with rich features; Generate your own spreadsheets with a data base support such as Northwind Database. The lastest version Updates to work with the new licensing system; Optimizes performance; ect.

Aspose.Excel.Web.Viewer   
http://www.aspose.com

Aspose.Excel.Web.Viewer is a visual ASP.Net component that enables developers to easily create web pages that mimic the look and feel of a desktop spreadsheet application. With it, you can: Create web pages that look and feel like a desktop spreadsheet application; Easy, full featured examples in both C# and VB .Net; load data directly from Excel® spreadsheets;create web page - spreadsheet displays from scratch; create web page - spreadsheet displays from scratch; importe data directly from a DataView object; embed standard styles as well as custom styles.

Aspose.Mime   
http://www.aspose.com

Aspose.Mime is a pure C#, fully managed, robust and reliable component, allowing you to parse email messages in your applications. Aspose.Mime allows you to absolutely avoid using of unmanaged code in your aplications, increase reliability and decrease costs for debugging.Aspose.Mime allows you to parse any number of email messages received from any source, like POP3 and IMAP servers. It provides you with easy access to any part of message, including plain text and html parts. You can also easily access any embedded object or attachment and save it into any stream or file.

Aspose.WebEffects   
http://www.aspose.com

Aspose.WebEffects is a totally FREE ASP.Net component that enables developers to Add flare to you ASP.Net website;add spice to any bland web page. WebEffects allows developers to concentrate on making good functional applications, and leaves the DHTML dirty work to itself.WebEffects can be used in conjunction with our other package ASPXpand to make simply amazing web sites. ASPXpand also does DHTML work, however more aimed at form processing and creating a more Desktop type environment. We do ask that you take time to simply look at the live demo of ASPXpand while you are here... That's all. All of the effects provided by WebEffects can be accomplished with one line of code! Feel free to use WebEffects in any of your web applications totally FREE.

WakiMail   
http://www.wakisoft.com

WakiMail is a email component. It can be used on asp.net or winform program to send email.The most difference from framework's email class is it support SMTP validate. It's very easy to send email using it. And it's absolute free now.