Harbour is 100% Clipper-compatible and supports many language syntax extensions

including greatly extended run-time libraries such as OLE, Blat, OpenSSL, FreeImage,

GD, TIP, Tpathy, PCRE, HbZip (zlib and bzip2), cURL, Cairo, its own implementation of

CTools and NanFor libraries and many others. Harbour has an active development

community and extensive third party support.

Harbour includes various extensions of Clipper language; such as class creation,

support  for date constants, FOR EACH and SWITCH structures, many extensions to

RDD and language features and much more.