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	Version	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
vnc	Ultr@VNC	1.0.8.0	808	0.048
http	AIM	1.0	748	0.044
vnc-http	Ultr@VNC		696	0.041
vnc-http	RealVNC	4.0	508	0.03
http	lighttpd	1.4.29	459	0.027
http	Avtech AVN801 network camera	1.0	447	0.026
http	lighttpd	1.4.19	419	0.025
vnc-http	RealVNC	E4	411	0.024
http	Netwave IP camera http config		383	0.023
http	Microsoft IIS httpd	6.0	336	0.02
ssh	OpenSSH	5.1p1 Debian 5	324	0.019
netbios-ssn			250	0.015
http	Apache Tomcat/Coyote JSP engine	1.1	214	0.013
http	Intoto httpd	1.0	201	0.012
insight-manager	Consul InSight Manager		196	0.012
http	Apache		185	0.011
http	mini_httpd	1.19 19dec2003	174	0.01
vnc	Microsoft Virtual Server remote control		157	0.009
http	Boa HTTPd	0.94.14rc21	157	0.009
http	GoAhead-Webs httpd		156	0.009
http	Apache	2.2.22	154	0.009
http	DVR Systems webcam http interface		149	0.009
http	ZNC IRC bouncer http config		134	0.008
http	Netgear DG834G router http config		134	0.008
vnc-http	VNC Server Enterprise Edition httpd	E4.4.2 r13117	132	0.008
damewaremr	DameWare Mini Remote Control		132	0.008
http	uc-httpd	1.0.0	124	0.007
http	PDR-M800	1.0	123	0.007
http	thttpd	2.24 26oct2003	122	0.007
http	Httpd	1.0	122	0.007
ssh			114	0.007
http	Boa HTTPd	0.94.13	114	0.007
http	DrcomServer1.0		113	0.007
vnc-http	VNC Server Enterprise Edition httpd	E4.5.1 r27892	110	0.006
http	Microsoft IIS httpd	7.5	104	0.006
http	Gadspot/Avtech AV787 webcam http config		90	0.005
vnc-http	TightVNC		85	0.005
vnc-http	VNC Server Enterprise Edition httpd	E4.5.4 r41964	79	0.005
http	Apache	2.2.3	78	0.005
http	Apache	2.2.16	78	0.005
http	GeoVision GeoHttpServer for webcams		77	0.005
http	Apache	2.2.14	77	0.005
http	uTorrent WebUI		74	0.004
telnet			69	0.004
ssh	OpenSSH	3.8.1p1 Debian 8.sarge.6	68	0.004
http	DD-WRT milli_httpd		68	0.004
http	Hikvision-Webs		65	0.004
http	IP_SHARER WEB	1.0	62	0.004
http	thttpd	2.25b 29dec2003	61	0.004
http	RemotelyAnywhere remote PC management httpd	8.0.668	61	0.004
http	Microsoft HTTPAPI httpd	2.0	61	0.004
http	Boa HTTPd	0.93.15	61	0.004
http	thttpd		57	0.003
http	GoAhead-Webs embedded httpd		57	0.003
vnc-http	VNC Server Enterprise Edition httpd	E4.5 r21561	56	0.003
http	Cross Web Server		56	0.003
http	Buffalo AirStation http config		56	0.003
http	Apache	2.2.15	55	0.003
ssl	TLS	1.0	54	0.003
http-proxy	Squid http proxy	3.1.16	54	0.003
http	nginx		54	0.003
http	Apache	0.6.5	54	0.003
vnc-http	VNC Server Enterprise Edition httpd	E4.4.0 r12094	53	0.003
http	RemotelyAnywhere remote PC management httpd	8.0.747	53	0.003
http	micro_httpd		53	0.003
http	Mbedthis-Appweb	2.0.4	53	0.003
ftp	Microsoft ftpd		53	0.003
http	Microsoft IIS httpd		51	0.003
http	Microsoft IIS httpd	7.0	50	0.003
http	GoAhead-Webs		49	0.003
vnc	RealVNC Enterprise Edition		48	0.003
http	Apache	1.3.28	48	0.003
ssh	OpenSSH	4.3	47	0.003
vtun	Vtun Virtual Tunnel	3.X 11/12/2010	45	0.003
telnet	Linux telnetd		45	0.003
http	Boa HTTPd	0.94.11	45	0.003
http	Apache	2.2.9	45	0.003
http	Netgear WGR614v7 WAP http config		44	0.003
vnc-http	VNC Server Enterprise Edition httpd	E4.4.3 r16583	43	0.003
socks5			43	0.003
http	RealVNC	4.0	43	0.003
http-proxy	Squid http proxy	2.7.STABLE9	42	0.002
http	lighttpd	1.4.28	40	0.002
vnc-http	VNC Server Enterprise Edition httpd	E4.5.3 r39012	37	0.002
http	Sagem F@st router httpd		37	0.002
ssh	OpenSSH	5.5p1 Debian 6+squeeze2	36	0.002
http	Microsoft IIS httpd	5.1	36	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
http	lighttpd	1.4.20	34	0.002
http	Apache	2.2.21	34	0.002
vnc-http	VNC Server Personal Edition httpd	P4.5.4 r41964	33	0.002
vnc-http	VNC Server Personal Edition httpd	P4.5.1 r27892	33	0.002
http	thttpd	2.24	33	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	1.1	31	0.002
http	Apache	2.2.17	31	0.002
http	TeamViewer httpd		30	0.002
http	Netgear DG834 router http config		30	0.002
http	RealVNC	E4	29	0.002
ftp			28	0.002
vnc-http	VNC Server Enterprise Edition httpd	E4.4.1 r12183	27	0.002
http-proxy	EZproxy web proxy		27	0.002
http	Apache	2.2.8	27	0.002
upnp	Portable SDK for UPnP devices	1.3.1	26	0.002
http	Techno Vision Security System http config	2.0	26	0.002
http	RemotelyAnywhere remote PC management httpd	10.0.1086	26	0.002
http	Apache	2.0.53	26	0.002
http	BSkyB DG934G http config		25	0.001
ssh	OpenSSH	5.3	23	0.001
smtp			23	0.001
http	WYM httpd	1.0	23	0.001
http	Linksys WRT54G wireless-G router http config		23	0.001
ftp	vsftpd	2.0.8 or later	23	0.001
ssl	TLSv1		22	0.001
irc-proxy	psyBNC	2.3.2-4	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	1.0	22	0.001
http	AIM HTTP	1.0 (aim_http_proxy)	22	0.001
http	Netgear DGN2000 router http config		21	0.001
http	Microsoft IIS httpd	5.0	21	0.001
ssh	OpenSSH	5.9p1 Debian 5ubuntu1	20	0.001
ssh	OpenSSH	5.5	20	0.001
irc-proxy	psyBNC	2.3.1	20	0.001
http	W3MFC	1.68	20	0.001
http	Ubicom	1.1	20	0.001
http	Apache	1.3.41	20	0.001
arcserve	ARCserve Discovery		20	0.001
xml			19	0.001
telnet	the MRV Communications' LX Series Server		19	0.001
ssh	OpenSSH	5.1	19	0.001
http	QNAP TS-219P NAS http config	1.0	19	0.001
http	Allegro RomPager	4.07 UPnP/1.0	19	0.001
ftp	Pure-FTPd		19	0.001
svnserve	Subversion		18	0.001
shoutcast	SHOUTcast server	1.9.8	17	0.001
http	Apache	2.2.11	17	0.001
http	uhttpd	1.0.0	16	0.001
http	Transmission BitTorrent management httpd		16	0.001
http	RemotelyAnywhere remote PC management httpd	8.0.605	16	0.001
http	lighttpd		16	0.001
vtun	Vtun Virtual Tunnel	3.X 05/17/2011	15	0.001
ssh	OpenSSH	5.3p1 Debian 3ubuntu7	15	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