Hmmm how to best answer this.

No LimeWire doesn't access all the "share" programs on the internet. That is a pretty wide open statement.

LimeWire does connect/access other Gnutella Clients on the Gnutella Network, and if they are "sharing" you will also get search results from them.

This does include the following Gnutella Clients:Shareaza (Windows), BearShare (Windows), GnucDNA Based Clients, Gtk-Gnutella (Linux/Unix), Phex (Cross-platform), and Qtella (Linux/Unix).