Microsoft BizTalk Server is a server product by Microsoft which provides the following functions: Business Process Automation, Business Process Modeling, Business-to-business Communication, Enterprise Application Integration and Message broker.

It’s a server product targeted mostly at medium to large enterprises, but has been popular among small companies as well. In a common scenario, BizTalk enables companies to integrate and manage business processes by exchanging business documents (e.g., purchase orders and invoices) among applications, within or across organizational boundaries.Development for BizTalk Server is done through Visual Studio .NET

The term SharePoint can refer to any of three pairs of Microsoft software products which were released in the same timeframe:

In 2001:

SharePoint Team Services (STS) which ran on Windows 2000 Server and was in effect Windows SharePoint Services version 1.
SharePoint Portal Server 2001 - a portal based collaboration and document management tool developed on top of the Microsoft Exchange Server database.
In 2003:

Windows SharePoint Services (WSS version 2) - which ran on Windows Server 2003, a free Windows server component that provides collaboration and intranet services. WSS v2 is based on the .Net 1.1 Framework, Although support for .Net 2.0 Framework was added in Service Pack 2.
Microsoft Office SharePoint Portal Server 2003 (SPS) - a portal based collaboration and document management that extends Windows SharePoint Services v2.
In 2006/2007:

Windows SharePoint Services 3.0 (WSS 3.0) is freely available as a Windows 2003 server component. WSS 3.0 was based on the ASP.NET 2.0 and required .NET Framework 3.0.
Microsoft Office SharePoint Server 2007 (MOSS) - The next iteration of Microsoft Office SharePoint Portal Server 2003 (SPS). Includes the functionality previously included in Microsoft Office SharePoint Portal Server 2003 (SPS 2003) and Microsoft Content Management Server 2002 (MCMS 2002) plus new components like Infopath Form Services and Excel Calculation Server. MOSS is based on WSS 3.0.
Apart from SharePoint Portal Server 2001, all of the products require and utilize one of the following databases:

Microsoft SQL Server (preferred for server farm environments)
Microsoft SQL Server Express Edition
Microsoft SQL Server Embedded Edition (which is installed by default in standalone installations of Windows Sharepoint Services version 3.0)
Microsoft Data Engine (MSDE) — (although the SQL Server Express Edition is preferred since 2005)
There are many third-party companies that produce software products that integrate with Sharepoint. One field of development is the ‘offline synchronization’ of Sharepoint information to allow travelling users access to content while not connected to the Sharepoint server. Examples of such tools include:

Microsoft Office Groove
Colligo Reader and Colligo Contributor
Digi-Link Revelation
For a comparison of these products see Sharepoint Offline Synchronization Comparison

hi check this link its good

.