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	Info	OS	Devicetype	Count	Percent
vnc	VNC		protocol 3.8			575198	33.818
vnc	Apple remote desktop vnc			Mac OS X		400093	23.523
vnc			protocol 3			174412	10.254
vnc	VNC		protocol 3.6			140292	8.248
vnc	RealVNC Enterprise		protocol 4.1			99160	5.83
vnc	RealVNC Personal		protocol 4.0			96840	5.694
vnc	VNC		protocol 3.3			56465	3.32
vnc	VNC		protocol 3.7			49282	2.897
no match						25880	1.522
ssl	SSLv3					21664	1.274
http						14257	0.838
vnc	VNC		protocol 3.4			7022	0.413
drac-console	Dell Remote Access Controller 4 console					6478	0.381
http	SonicWALL				firewall	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		Unlicensed; protocol 3.3			1349	0.079
vnc	VNC		protocol 3.3; Locked out			1124	0.066
secure-socket	CA Secure Socket Adapter					1082	0.064
vnc	Ultr@VNC	1.0.8.0		Windows		808	0.048
http	AIM	1.0				748	0.044
http	lighttpd	1.4.29				459	0.027
http	Avtech AVN801 network camera	1.0	UPnP 1.0		webcam	447	0.026
http	lighttpd	1.4.19				418	0.025
http	Netwave IP camera http config				webcam	383	0.023
vnc	VNC		protocol 3.5			370	0.022
vnc-http	RealVNC	E4	Resolution 600x250; VNC TCP port: 5900			342	0.02
http	Microsoft IIS httpd	6.0		Windows		336	0.02
ssh	OpenSSH	5.1p1 Debian 5	protocol 2.0	Linux		324	0.019
vnc-http	RealVNC	4.0	Resolution 400x250; VNC TCP port: 5900			268	0.016
netbios-ssn						250	0.015
http	Apache Tomcat/Coyote JSP engine	1.1				208	0.012
http	Intoto httpd	1.0				201	0.012
insight-manager	Consul InSight Manager					196	0.012
http	mini_httpd	1.19 19dec2003				174	0.01
vnc-http	RealVNC	4.0	Resolution 400x250; VNC TCP port: 6000			164	0.01
vnc	Microsoft Virtual Server remote control			Windows		157	0.009
http	Boa HTTPd	0.94.14rc21				157	0.009
http	DVR Systems webcam http interface				webcam	149	0.009
http	Apache					141	0.008
http	ZNC IRC bouncer http config		not enabled			134	0.008
http	Netgear DG834G router http config				router	134	0.008
damewaremr	DameWare Mini Remote Control			Windows		132	0.008
http	GoAhead-Webs httpd					130	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
vnc-http	VNC Server Enterprise Edition httpd	E4.4.2 r13117	Resolution 400x250; VNC port 5900			117	0.007
http	Boa HTTPd	0.94.13				114	0.007
http	DrcomServer1.0					113	0.007
http	Microsoft IIS httpd	7.5		Windows		104	0.006
ssh			protocol 1.5			102	0.006
http	Gadspot/Avtech AV787 webcam http config				webcam	90	0.005
vnc-http	VNC Server Enterprise Edition httpd	E4.5.1 r27892	Resolution 400x250; VNC port 5900			82	0.005
http	GeoVision GeoHttpServer for webcams				webcam	77	0.005
http	uTorrent WebUI			Windows		74	0.004
vnc-http	VNC Server Enterprise Edition httpd	E4.5.4 r41964	Resolution 480x250; VNC port 5900			69	0.004
telnet						69	0.004
ssh	OpenSSH	3.8.1p1 Debian 8.sarge.6	protocol 2.0	Linux		66	0.004
http	Hikvision-Webs					65	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	SSDP/UPnP	Windows		61	0.004
http	Boa HTTPd	0.93.15				61	0.004
http	GoAhead-Webs embedded httpd					57	0.003
http	Cross Web Server					56	0.003
http	Buffalo AirStation http config				WAP	56	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	E4.5 r21561	Resolution 400x250; VNC port 5900			53	0.003
http	RemotelyAnywhere remote PC management httpd	8.0.747				53	0.003
http	Mbedthis-Appweb	2.0.4				53	0.003
ftp	Microsoft ftpd			Windows		53	0.003
http	Apache	2.2.22	(Unix)			52	0.003
http	Microsoft IIS httpd	7.0		Windows		50	0.003
http	micro_httpd					50	0.003
http	Microsoft IIS httpd					49	0.003
http	GoAhead-Webs					49	0.003
vnc	RealVNC Enterprise Edition		protcol 3.3			48	0.003
http	Apache	2.2.3	(CentOS)			46	0.003
vtun	Vtun Virtual Tunnel	3.X 11/12/2010				45	0.003
vnc-http	RealVNC	4.0	Resolution 400x250; VNC TCP port: 5800			45	0.003
telnet	Linux telnetd			Linux		45	0.003
http	Boa HTTPd	0.94.11				45	0.003
ssh	OpenSSH	4.3	protocol 2.0			44	0.003
http	Netgear WGR614v7 WAP http config				WAP	44	0.003
http	Apache		SSL-only mode			44	0.003
vnc-http	VNC Server Enterprise Edition httpd	E4.4.0 r12094	Resolution 400x250; VNC port 5900			43	0.003
http	RealVNC	4.0				43	0.003
socks5						42	0.002
http	thttpd		Panasonic BB-HCM511 IP camera http config			42	0.002
http-proxy	Squid http proxy	2.7.STABLE9				42	0.002
http	lighttpd	1.4.28				40	0.002
http	Sagem F@st router httpd				router	37	0.002
ssh	OpenSSH	5.5p1 Debian 6+squeeze2	protocol 2.0	Linux		36	0.002
http	Microsoft IIS httpd	5.1		Windows		36	0.002
vnc-http	TightVNC					35	0.002
http-proxy	Ncat http proxy		Nmap 4.85BETA1 or later			35	0.002
http	lighttpd	1.4.20				34	0.002
http	DD-WRT milli_httpd					34	0.002
vnc-http	VNC Server Enterprise Edition httpd	E4.5.3 r39012	Resolution 480x250; VNC port 5900			33	0.002
vnc-http	VNC Server Enterprise Edition httpd	E4.4.3 r16583	Resolution 400x250; VNC port 5900			33	0.002
vnc-http	RealVNC	E4	Resolution 600x250; VNC TCP port: 5800			33	0.002
http	thttpd	2.24				33	0.002
http			General User			33	0.002
http	Apache	2.2.15	(CentOS)			33	0.002
vnc-http	VNC Server Personal Edition httpd	P4.5.4 r41964	Resolution 480x250; VNC port 5900			32	0.002
rtsp	Avtech MPEG4 DVR control rtspd					32	0.002
http	Netgear WGR614v9 WAP http config				WAP	32	0.002
http	D-Link DIR-300 WAP http admin				WAP	32	0.002
http	DD-WRT milli_httpd			Linux	WAP	32	0.002
http	TeamViewer httpd					30	0.002
http	RealVNC	E4				29	0.002
ftp						28	0.002
vnc-http	VNC Server Personal Edition httpd	P4.5.1 r27892	Resolution 400x250; VNC port 5900			27	0.002
http-proxy	EZproxy web proxy					27	0.002
upnp	Portable SDK for UPnP devices	1.3.1	Linux 2.6.21; UPnP 1.0	Linux		26	0.002
http	Techno Vision Security System http config	2.0			webcam	26	0.002
http	RemotelyAnywhere remote PC management httpd	10.0.1086				26	0.002
http	BSkyB DG934G http config				broadband router	25	0.001
http	Apache	2.2.16	(Debian)			25	0.001
http	Apache	1.3.28	(SolutionIP) PHP/5.0.4 mod_perl/1.28 mod_ssl/2.8.15 OpenSSL/0.9.7b			25	0.001
vnc-http	RealVNC	E4	Resolution 600x250; VNC TCP port: 6000			24	0.001
http	Apache	2.2.14	(Unix) mod_ssl/2.2.14 OpenSSL/0.9.8l mod_perl/2.0.4 Perl/v5.10.0			24	0.001
ssh	OpenSSH	5.3	protocol 2.0			23	0.001
smtp						23	0.001
http	Linksys WRT54G wireless-G router http config				WAP	23	0.001
http	Apache	2.2.22	(Ubuntu)			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				router	22	0.001
http	Netgear CVG834G cable modem http config				broadband router	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 DGN2200			21	0.001
http	Netgear DGN2000 router http config				router	21	0.001
http	Microsoft IIS httpd	5.0		Windows		21	0.001
http	IP_SHARER WEB	1.0	Airlink/Sitecom wireless router		router	21	0.001
http	Apache	2.2.14	(Ubuntu)			21	0.001
vnc-http	VNC Server Enterprise Edition httpd	E4.4.1 r12183	Resolution 400x250; VNC port 5900			20	0.001
ssh	OpenSSH	5.9p1 Debian 5ubuntu1	Ubuntu Linux; protocol 2.0	Linux		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			NETGEAR DG834Gv5			20	0.001
arcserve	ARCserve Discovery					20	0.001