Institution	Service	Parameters	Status	Documentation
ADC	IMPReSS	Position	CGI Interface
	VizieR (2000 catalogs)	Position, time, …	CGI Interface
	AEQ	Position, time, …	CGI Interface
	CatsEye	Saved table	CGI Interface
	Catalog Search	Keywords, Author, Date	CGI Interface
ADS	Bibliography search	author, keywords, dates, …	CGI Interface
	Abstract	Bibcode	CGI Interface	Example WSDL I/F
	Article	Bibcode	CGI Interface
	Related articles	Bibcode	CGI Interface
CXC	Archive data	ObsID	CGI Interface
	Chandra Observation Catalog	Position, time, …	CGI Interface
	Astrobrowse	Position, time, …	CGI Interface
HEASARC	Browse Catalogs (200 catalogs)	Position, time, …	CGI Interface
	Browse Archive (20 missions)	Table key (typically ObsID)	CGI Interface
	SkyView (~30 surveys)	Position, survey	CGI Interface	Example WSDL
	Astrobrowse	Position	CGI Interface
	SkyMorph	Name, position, time	CGI Interface
	nh, X-ray background	Position	CGI Interface
	Converter tools	Position, time, energy	CGI Interface
IRSA	Catalog Listing	none	Suggested Interface	Example WSDL
	Catalog Schema Request	Catalog id	Suggested Interface	Example WSDL
	Catalog Query	postion, SQL	Suggested Interface	Example WSDL
	Cutout Servers (2MASS, IRAS,MSX)	target/position	CGI Interface
	MSX Archive server	Position	CGI Interface
	GATOR (20 catalogs, 2 missions)	Position, Time, …, SQL	CGI Interface
	Position converter	Position	CGI Interface
MAST	Availability summary	Position	Prototype SOAP I/F	WSDL
	MAST catalogs (20 catalogs)	Position, time, ….	CGI Interface	Example WSDL
	MAST archive (15 missions)	Obsid	??
	DSS[2] cutouts	Position	CGI Interface
	GSC[2] queries	Position	CGI Interface
	StarCast	Position	CGI Interface
NED	Name resolver	Target name	Sockets interface CGI interface
	Object information summary	Target name	CGI interface
	Object information retrieval	Target name	CGI Interface
	Literature references	Target name/date	CGI interface
	Image query	Target name	CGI interface
	Position query	Target name	CGI interface