What is Apollo ?

CCH : From

http://www.vistasoftware.com/default.asp

Create Windows, .NET & Web applications that manage CA-Clipper & FoxPro DBF database filesOver 100,000 developers worldwide use the award-winning Apollo database engine with Borland Delphi, C#/VB.NET in Visual Studio, classic Visual Basic, and C/C++ to create high-performance database applications that manage CA-Clipper and FoxPro DBF database files.

• Small 1MB embedded footprint
• SQL-92 support & Direct Data Access™ objects
• Includes .NET Provider, VCL components and Windows controls
• Supports DBF/NTX/DBT, DBF/CDX/FPT, DBF/NSX/SMT

What is Leto db Server ?

CCH : Information about Leto Db Server is pretty sketchy but it has been discussed extensively in the Harbour and HMG Extended Forums.

From http://sourceforge.net/projects/letodb/

Leto is a multi-platform database server or a database management system, chiefly intended for client programs, written on Harbour, be able to work with dbf/cdx files, located on a remote server.