What are some alternatives?
When comparing Air Sharing and SAP NetWeaver, you can also consider the following products
Printer Pro - Print attachments, receipts, documents, web pages from your iPad and iPhone.
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
CalPrint - CalPrint uses your existing reminders and calendar entries on your iPad or iPhone (Exchange, iCal and Google Calendars etc.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
AltaMail - A treasure trove of features make AltaMail the best email App for iPad or iPhone for auto reply, auto filing, managing and saving emails, attachments and other files.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.