Overview of services running on Port 5900 TCP.
~1.7 Million IP addresses observed from May to December 2012
To get raw lists of the data go to Download. For an explanation of what this data is and how it was obtained, see Paper.

Servicename	Product	Count	Percent
vnc	VNC	829765	48.784
vnc	Apple remote desktop vnc	400093	23.523
vnc		174416	10.254
vnc	RealVNC Enterprise	99160	5.83
vnc	RealVNC Personal	96840	5.694
no match	-/-	25880	1.522
ssl	SSLv3	21664	1.274
http		14500	0.852
drac-console	Dell Remote Access Controller 4 console	6478	0.381
http	SonicWALL	4387	0.258
irc	Dancer ircd	4092	0.241
chat	AIM or ICQ server	2516	0.148
vnc	Ultr@VNC Repeater	2231	0.131
vnc	RealVNC	1349	0.079
secure-socket	CA Secure Socket Adapter	1082	0.064
http	Apache	1066	0.063
http	lighttpd	1011	0.059
vnc-http	RealVNC	919	0.054
vnc	Ultr@VNC	808	0.048
ssh	OpenSSH	777	0.046
http	AIM	748	0.044
vnc-http	Ultr@VNC	696	0.041
http	Microsoft IIS httpd	598	0.035
vnc-http	VNC Server Enterprise Edition httpd	537	0.032
http	Avtech AVN801 network camera	447	0.026
http	Boa HTTPd	393	0.023
http	Netwave IP camera http config	383	0.023
http	thttpd	323	0.019
netbios-ssn		250	0.015
http	Apache Tomcat/Coyote JSP engine	214	0.013
http	Intoto httpd	201	0.012
insight-manager	Consul InSight Manager	196	0.012
http	RemotelyAnywhere remote PC management httpd	178	0.01
http	mini_httpd	175	0.01
vnc	Microsoft Virtual Server remote control	157	0.009
http	GoAhead-Webs httpd	156	0.009
http-proxy	Squid http proxy	153	0.009
http	DVR Systems webcam http interface	149	0.009
http	ZNC IRC bouncer http config	135	0.008
http	Netgear DG834G router http config	134	0.008
damewaremr	DameWare Mini Remote Control	132	0.008
http	uc-httpd	124	0.007
http	PDR-M800	123	0.007
http	Httpd	122	0.007
ssh		114	0.007
http	DrcomServer1.0	113	0.007
vnc-http	TightVNC	94	0.006
vnc-http	VNC Server Personal Edition httpd	93	0.005
http	nginx	91	0.005
http	Gadspot/Avtech AV787 webcam http config	90	0.005
http	GeoVision GeoHttpServer for webcams	77	0.005
http	uTorrent WebUI	74	0.004
vtun	Vtun Virtual Tunnel	72	0.004
http	RealVNC	72	0.004
telnet		69	0.004
http	DD-WRT milli_httpd	68	0.004
http	Hikvision-Webs	65	0.004
http	Microsoft HTTPAPI httpd	62	0.004
http	IP_SHARER WEB	62	0.004
http	Mbedthis-Appweb	60	0.004
http	GoAhead-Webs embedded httpd	57	0.003
http	Cross Web Server	56	0.003
http	Buffalo AirStation http config	56	0.003
ftp	Microsoft ftpd	56	0.003
ssl	TLS	54	0.003
http	micro_httpd	53	0.003
http	GoAhead-Webs	50	0.003
vnc	RealVNC Enterprise Edition	48	0.003
mysql	MySQL	48	0.003
http	Allegro RomPager	47	0.003
telnet	Linux telnetd	45	0.003
http	VNC Server Enterprise Edition	45	0.003
irc-proxy	psyBNC	44	0.003
http	Netgear WGR614v7 WAP http config	44	0.003
socks5		43	0.003
ftp	FileZilla ftpd	43	0.003
http	MiniServ	40	0.002
http	Sagem F@st router httpd	37	0.002
http-proxy	Ncat http proxy	35	0.002
http	Linksys wireless-G WAP http config	35	0.002
http	Tomato WAP firmware httpd	34	0.002
rtsp	Avtech MPEG4 DVR control rtspd	32	0.002
http	Netgear WGR614v9 WAP http config	32	0.002
http	D-Link DIR-300 WAP http admin	32	0.002
http	Ubicom httpd	31	0.002
ftp	Serv-U ftpd	31	0.002
http	TeamViewer httpd	30	0.002
http	Netgear DG834 router http config	30	0.002
http	Jetty	28	0.002
ftp		28	0.002
http-proxy	EZproxy web proxy	27	0.002
upnp	Portable SDK for UPnP devices	26	0.002
http	Techno Vision Security System http config	26	0.002
ftp	vsftpd	26	0.002
ssh	Dropbear sshd	25	0.001
shoutcast	SHOUTcast server	25	0.001
http	BSkyB DG934G http config	25	0.001
smtp		23	0.001
http	WYM httpd	23	0.001
http	uhttpd	23	0.001
http	Linksys WRT54G wireless-G router http config	23	0.001
http	Embedded HTTP Server	23	0.001
ftp	ProFTPD	23	0.001
ssl	TLSv1	22	0.001
http	Netgear DG834GT router http config	22	0.001
http	Netgear CVG834G cable modem http config	22	0.001
http	MS-SDK-HttpServer	22	0.001
http	AIM HTTP	22	0.001
http	Netgear DGN2000 router http config	21	0.001
smtp	Microsoft ESMTP	20	0.001
http	W3MFC	20	0.001
http	Ubicom	20	0.001
arcserve	ARCserve Discovery	20	0.001
xml		19	0.001
telnet	the MRV Communications' LX Series Server	19	0.001
http	QNAP TS-219P NAS http config	19	0.001
ftp	Pure-FTPd	19	0.001
svnserve	Subversion	18	0.001
ssh	Bitvise WinSSHD	17	0.001
http	Transmission BitTorrent management httpd	16	0.001
http	TP-LINK WA5210G WAP http config	15	0.001
http-proxy	MikroTik http proxy	15	0.001
http-proxy	F5 BIG-IP load balancer http proxy	15	0.001
http	Netgear WGR614v6 WAP http config	15	0.001
http	LuCI Lua http config	15	0.001
http	Draytek Vigor ADSL router webadmin	15	0.001
directconnect	Direct Connect P2P	15	0.001
netsupport	NetSupport PC remote control	14	0.001
http	TwistedWeb httpd	14	0.001
http	TRENDnet TV-IP110w or TV-IP422W webcam display httpd	14	0.001
http	mhttpd v1.1	14	0.001
http	Linksys E2000 WAP http config	14	0.001
http	IP_SHARER WEB 1.0	14	0.001
http	HTTPD 1.0	14	0.001
http	dcs-lig-httpd	14	0.001
http	WebServer(IPCamera_Logo)	13	0.001
http	uClinux-httpd	13	0.001
http	RapidLogic httpd	13	0.001
http	Netgear DGN1000 router http config	13	0.001
http	MikroTik router config httpd	13	0.001
http	ImagiaTek	13	0.001
telnet	the MRV Communications' LX Series Console Server	12	0.001
openvpn	OpenVPN	12	0.001
http	World Client WDaemon httpd	12	0.001
http	WebLogic httpd	12	0.001
http	ver2.4 rev0	12	0.001
http	TP-LINK WR740N WAP http config	12	0.001
http	Network Camera with Pan	12	0.001
ssl	Microsoft IIS SSL	11	0.001
ssh	Cisco SSH	11	0.001
smtp	Postfix smtpd	11	0.001
smtp	Microsoft Exchange smtpd	11	0.001
http	siyou server	11	0.001
http	Netgear or Linksys WAP http config	11	0.001
http	Linksys E1000 WAP http config	11	0.001
http	D-Link/Airlink IP webcam http config	11	0.001
telnet	Allied Telesis x900-series switch telnetd	10	0.001
java-rmi	Java RMI	10	0.001
irc	Unreal ircd	10	0.001
http	TP-LINK WR941N WAP http config	10	0.001
http	TP-LINK Router	10	0.001
http	Router	10	0.001
http	Netgear DG834PN router http config	10	0.001
http	Netgear DG834GB router http config	10	0.001
http	Linksys WRT54GS wireless-G router http config	10	0.001
http	Linksys router http config	10	0.001
http	Linksys E4200 WAP http config	10	0.001
http	HTTP Software 1.1	10	0.001
http	GM Streaming Server httpd	10	0.001
http	D-Link DI-524 http config	10	0.001
http	Datum	10	0.001
http	Aterm(HT)	10	0.001