checked what's using port 80. it doesn't mean anything to me, how about for you ?
sudo lsof -i -P
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
launchd 1 root 9u IPv6 0xb012a9f717770df1 0t0 TCP *:895 (LISTEN)
launchd 1 root 10u IPv4 0xb012a9f717775dd9 0t0 TCP *:895 (LISTEN)
launchd 1 root 14u IPv4 0xb012a9f717349ec9 0t0 UDP localhost:60762
launchd 1 root 24u IPv4 0xb012a9f717349d41 0t0 UDP *:137
launchd 1 root 25u IPv4 0xb012a9f717349bb9 0t0 UDP *:138
launchd 1 root 32u IPv6 0xb012a9f717770631 0t0 TCP localhost:631 (LISTEN)
launchd 1 root 33u IPv4 0xb012a9f717774f69 0t0 TCP localhost:631 (LISTEN)
UserEvent 11 root 134u IPv4 0xb012a9f7173481b1 0t0 UDP *:*
syslogd 24 root 14u IPv4 0xb012a9f718f9d931 0t0 UDP *:60359
mDNSRespo 36 _mdnsresponder 8u IPv4 0xb012a9f7173498a9 0t0 UDP *:5353
mDNSRespo 36 _mdnsresponder 9u IPv6 0xb012a9f717349721 0t0 UDP *:5353
mDNSRespo 36 _mdnsresponder 25u IPv6 0xb012a9f717346499 0t0 UDP *:*
mDNSRespo 36 _mdnsresponder 27u IPv6 0xb012a9f717345239 0t0 UDP *:*
mDNSRespo 36 _mdnsresponder 36u IPv4 0xb012a9f71e862621 0t0 UDP *:54994
mDNSRespo 36 _mdnsresponder 38u IPv4 0xb012a9f718fa0289 0t0 UDP all-systems.mcast.net:5350
mDNSRespo 36 _mdnsresponder 39u IPv6 0xb012a9f718fa0721 0t0 UDP *:*
mDNSRespo 36 _mdnsresponder 41u IPv6 0xb012a9f717348029 0t0 UDP *:54994
mDNSRespo 36 _mdnsresponder 42u IPv4 0xb012a9f722371001 0t0 UDP *:60263
mDNSRespo 36 _mdnsresponder 43u IPv6 0xb012a9f71e864339 0t0 UDP *:60263
mDNSRespo 36 _mdnsresponder 44u IPv4 0xb012a9f722372ea1 0t0 UDP *:54586
mDNSRespo 36 _mdnsresponder 45u IPv6 0xb012a9f71e864f79 0t0 UDP *:54586
mDNSRespo 36 _mdnsresponder 48u IPv4 0xb012a9f722371499 0t0 UDP *:52804
mDNSRespo 36 _mdnsresponder 61u IPv6 0xb012a9f71e862f51 0t0 UDP *:52804
mDNSRespo 36 _mdnsresponder 62u IPv4 0xb012a9f722373649 0t0 UDP *:61323
mDNSRespo 36 _mdnsresponder 65u IPv6 0xb012a9f718f9c0b1 0t0 UDP *:61323
mDNSRespo 36 _mdnsresponder 75u IPv4 0xb012a9f718fa0d41 0t0 UDP *:51117
mDNSRespo 36 _mdnsresponder 76u IPv6 0xb012a9f717346f51 0t0 UDP *:51117
mDNSRespo 36 _mdnsresponder 77u IPv4 0xb012a9f71e863881 0t0 UDP *:62050
mDNSRespo 36 _mdnsresponder 78u IPv6 0xb012a9f718f9ce79 0t0 UDP *:62050
mDNSRespo 36 _mdnsresponder 79u IPv4 0xb012a9f71e861b69 0t0 UDP *:58421
mDNSRespo 36 _mdnsresponder 80u IPv6 0xb012a9f722370859 0t0 UDP *:58421
mDNSRespo 36 _mdnsresponder 81u IPv4 0xb012a9f71e865289 0t0 UDP *:59515
mDNSRespo 36 _mdnsresponder 82u IPv6 0xb012a9f71e8658a9 0t0 UDP *:59515
mDNSRespo 36 _mdnsresponder 83u IPv4 0xb012a9f71e862311 0t0 UDP *:49380
mDNSRespo 36 _mdnsresponder 84u IPv6 0xb012a9f718fa0599 0t0 UDP *:49380
mDNSRespo 36 _mdnsresponder 85u IPv4 0xb012a9f7223726f9 0t0 UDP *:58232
mDNSRespo 36 _mdnsresponder 86u IPv6 0xb012a9f722373ae1 0t0 UDP *:58232
mDNSRespo 36 _mdnsresponder 94u IPv4 0xb012a9f718f9d621 0t0 UDP *:58325
mDNSRespo 36 _mdnsresponder 97u IPv6 0xb012a9f722374411 0t0 UDP *:58325
mDNSRespo 36 _mdnsresponder 100u IPv4 0xb012a9f71e864029 0t0 UDP *:59428
mDNSRespo 36 _mdnsresponder 101u IPv6 0xb012a9f718f9d499 0t0 UDP *:59428
mDNSRespo 36 _mdnsresponder 102u IPv4 0xb012a9f71e861cf1 0t0 UDP *:53696
mDNSRespo 36 _mdnsresponder 103u IPv6 0xb012a9f722371931 0t0 UDP *:53696
mDNSRespo 36 _mdnsresponder 104u IPv4 0xb012a9f722370b69 0t0 UDP *:63165
mDNSRespo 36 _mdnsresponder 105u IPv6 0xb012a9f718f9d189 0t0 UDP *:63165
locationd 40 _locationd 4u IPv4 0xb012a9f7173467a9 0t0 UDP *:*
kdc 42 root 5u IPv6 0xb012a9f7173484c1 0t0 UDP *:88
kdc 42 root 6u IPv6 0xb012a9f717770251 0t0 TCP *:88 (LISTEN)
kdc 42 root 7u IPv4 0xb012a9f717348339 0t0 UDP *:88
kdc 42 root 8u IPv4 0xb012a9f717774831 0t0 TCP *:88 (LISTEN)
configd 53 root 11u IPv6 0xb012a9f717349a31 0t0 UDP *:*
configd 53 root 19u IPv4 0xb012a9f717349101 0t0 UDP *:*
configd 53 root 23u IPv4 0xb012a9f717347571 0t0 UDP *:*
configd 53 root 25u IPv4 0xb012a9f7173473e9 0t0 UDP *:*
configd 53 root 27u IPv4 0xb012a9f717347261 0t0 UDP *:*
configd 53 root 30u IPv6 0xb012a9f719513ec9 0t0 ICMPV6 *:*
blued 55 root 4u IPv4 0xb012a9f717345cf1 0t0 UDP *:*
awacsd 56 root 11u IPv6 0xb012a9f71a75d251 0t0 TCP [fd27:3b22:834f:b65e:1908:c426:7902:2a59]:4488 (LISTEN)
apsd 58 root 9u IPv4 0xb012a9f731abb9c1 0t0 TCP 192.168.1.16:54068->17.149.34.59:5223 (ESTABLISHED)
apsd 58 root 10u IPv4 0xb012a9f731ab45a9 0t0 TCP 192.168.1.16:54809->17.149.32.46:5223 (ESTABLISHED)
FlipShare 61 root 10u IPv4 0xb012a9f71a74b289 0t0 TCP localhost:24726 (LISTEN)
FlipShare 61 root 11u IPv4 0xb012a9f71a74ab51 0t0 TCP localhost:24727 (LISTEN)
netbiosd 94 _netbios 3u IPv4 0xb012a9f717349bb9 0t0 UDP *:138
netbiosd 94 _netbios 4u IPv4 0xb012a9f717349d41 0t0 UDP *:137
ntpd 103 root 20u IPv4 0xb012a9f7173476f9 0t0 UDP *:123
ntpd 103 root 21u IPv6 0xb012a9f7173470d9 0t0 UDP *:123
ntpd 103 root 22u IPv6 0xb012a9f717346dc9 0t0 UDP localhost:123
ntpd 103 root 23u IPv4 0xb012a9f717346c41 0t0 UDP localhost:123
ntpd 103 root 24u IPv6 0xb012a9f717346ab9 0t0 UDP localhost:123
ntpd 103 root 25u IPv6 0xb012a9f717346931 0t0 UDP tomer.local:123
ntpd 103 root 26u IPv4 0xb012a9f71e865599 0t0 UDP 192.168.1.16:123
ntpd 103 root 28u IPv6 0xb012a9f718f9fc69 0t0 UDP [fe80:8::1908:c426:7902:2a59]:123
ntpd 103 root 29u IPv6 0xb012a9f717347b91 0t0 UDP [fd27:3b22:834f:b65e:1908:c426:7902:2a59]:123
cupsd 104 root 11u IPv6 0xb012a9f717770631 0t0 TCP localhost:631 (LISTEN)
cupsd 104 root 12u IPv4 0xb012a9f717774f69 0t0 TCP localhost:631 (LISTEN)
racoon 164 root 6u IPv6 0xb012a9f718f9fae1 0t0 UDP [fe80:8::1908:c426:7902:2a59]:500
racoon 164 root 7u IPv6 0xb012a9f718f9f959 0t0 UDP [fe80:8::1908:c426:7902:2a59]:4500
racoon 164 root 8u IPv4 0xb012a9f71e863d19 0t0 UDP 192.168.1.16:500
racoon 164 root 9u IPv4 0xb012a9f71e864c69 0t0 UDP 192.168.1.16:4500
racoon 164 root 10u IPv6 0xb012a9f718f9f4c1 0t0 UDP tomer.local:500
racoon 164 root 11u IPv6 0xb012a9f718f9f339 0t0 UDP tomer.local:4500
racoon 164 root 12u IPv6 0xb012a9f718f9f1b1 0t0 UDP localhost:500
racoon 164 root 13u IPv6 0xb012a9f718f9f029 0t0 UDP localhost:4500
racoon 164 root 14u IPv4 0xb012a9f718f9eea1 0t0 UDP localhost:500
racoon 164 root 15u IPv4 0xb012a9f718f9ed19 0t0 UDP localhost:4500
racoon 164 root 18u IPv6 0xb012a9f718f9eb91 0t0 UDP localhost:500
racoon 164 root 19u IPv6 0xb012a9f718f9ea09 0t0 UDP localhost:4500
racoon 164 root 20u IPv6 0xb012a9f718fa0bb9 0t0 UDP [fd27:3b22:834f:b65e:1908:c426:7902:2a59]:500
racoon 164 root 21u IPv6 0xb012a9f717348959 0t0 UDP [fd27:3b22:834f:b65e:1908:c426:7902:2a59]:4500
SystemUIS 210 tomer_gold 9u IPv4 0xb012a9f717346621 0t0 UDP *:*
Finder 211 tomer_gold 16u IPv4 0xb012a9f71a7a1ce1 0t0 TCP localhost:49231->localhost:26164 (ESTABLISHED)
NetworkBr 266 tomer_gold 5u IPv4 0xb012a9f7173453c1 0t0 UDP *:*
Dropbox 289 tomer_gold 15u IPv4 0xb012a9f731a3eb51 0t0 TCP 192.168.1.16:53285->108.160.163.49:80 (ESTABLISHED)
Dropbox 289 tomer_gold 21u IPv4 0xb012a9f71a7a2419 0t0 TCP localhost:26164->localhost:49231 (ESTABLISHED)
Dropbox 289 tomer_gold 23u IPv4 0xb012a9f717348df1 0t0 UDP *:17500
Dropbox 289 tomer_gold 26u IPv4 0xb012a9f71a74c0f9 0t0 TCP *:17500 (LISTEN)
Dropbox 289 tomer_gold 33u IPv4 0xb012a9f71a74d6a1 0t0 TCP localhost:26164 (LISTEN)
Skype 625 tomer_gold 12u IPv4 0xb012a9f717349411 0t0 UDP localhost:51605
Skype 625 tomer_gold 15u IPv4 0xb012a9f718f9e0d9 0t0 UDP *:*
Skype 625 tomer_gold 35u IPv4 0xb012a9f731ad69c1 0t0 TCP 192.168.1.16:53310->db3msgr5011007.gateway.messenger.live.com:443 (ESTABLISHED)
Skype 625 tomer_gold 36u IPv4 0xb012a9f731ac6289 0t0 TCP 192.168.1.16:53301->111.221.77.158:40031 (ESTABLISHED)
Skype 625 tomer_gold 56u IPv4 0xb012a9f7319ce831 0t0 TCP 192.168.1.16:55354->193.120.199.16:12350 (ESTABLISHED)
Skype 625 tomer_gold 57u IPv4 0xb012a9f71e2266a1 0t0 TCP *:29579 (LISTEN)
Skype 625 tomer_gold 58u IPv4 0xb012a9f718f9c859 0t0 UDP *:29579
Skype 625 tomer_gold 62u IPv4 0xb012a9f731a655a9 0t0 TCP 192.168.1.16:54009->dub402.hotmail.com:443 (ESTABLISHED)
Skype 625 tomer_gold 65u IPv4 0xb012a9f731aa55a9 0t0 TCP 192.168.1.16:29579->178.53.49.185:41368 (ESTABLISHED)
Skype 625 tomer_gold 74u IPv4 0xb012a9f731abc0f9 0t0 TCP 192.168.1.16:29579->host224-220-static.28-87-b.business.telecomitalia.it:51403 (ESTABLISHED)
Messages 628 tomer_gold 15u IPv4 0xb012a9f73197c831 0t0 TCP *:* (CLOSED)
Messages 628 tomer_gold 16u IPv4 0xb012a9f71e865a31 0t0 UDP 192.168.1.16:16402
WebProces 1152 tomer_gold 35u IPv4 0xb012a9f7319bd6a1 0t0 TCP 192.168.1.16:53349->fxpimages.spd.co.il:8002 (ESTABLISHED)
WebProces 1152 tomer_gold 37u IPv4 0xb012a9f731aedb51 0t0 TCP 192.168.1.16:55394->github.com:443 (ESTABLISHED)
WebProces 1152 tomer_gold 40u IPv4 0xb012a9f731997ce1 0t0 TCP 192.168.1.16:55395->195.10.51.90:443 (ESTABLISHED)
WebProces 1152 tomer_gold 42u IPv4 0xb012a9f7319ed419 0t0 TCP 192.168.1.16:55397->bud02s03-in-f30.1e100.net:443 (ESTABLISHED)
Python 1870 root 4u IPv4 0xb012a9f72fc70ce1 0t0 TCP *:80 (LISTEN)
Python 1870 root 11u IPv4 0xb012a9f731abf5a9 0t0 TCP 192.168.1.16:80->88.229.185.118.dynamic.ttnet.com.tr:62775 (ESTABLISHED)
BitTorren 2953 tomer_gold 7u IPv4 0xb012a9f731a830f9 0t0 TCP *:26085 (LISTEN)
BitTorren 2953 tomer_gold 8u IPv6 0xb012a9f71a75d631 0t0 TCP *:26085 (LISTEN)
BitTorren 2953 tomer_gold 9u IPv4 0xb012a9f731b11831 0t0 TCP localhost:10000 (LISTEN)
BitTorren 2953 tomer_gold 10u IPv4 0xb012a9f71fd52831 0t0 TCP 192.168.1.16:26085->cpe-75-83-34-66.socal.res.rr.com:54404 (ESTABLISHED)
BitTorren 2953 tomer_gold 11u IPv4 0xb012a9f718fa0101 0t0 UDP *:26085
BitTorren 2953 tomer_gold 12u IPv6 0xb012a9f722371311 0t0 UDP *:26085
BitTorren 2953 tomer_gold 13u IPv4 0xb012a9f719513411 0t0 ICMP *:*
BitTorren 2953 tomer_gold 14u IPv6 0xb012a9f719513599 0t0 ICMPV6 *:*
BitTorren 2953 tomer_gold 19u IPv4 0xb012a9f718fa08a9 0t0 UDP localhost:54801
BitTorren 2953 tomer_gold 20u IPv4 0xb012a9f722370cf1 0t0 UDP 192.168.1.16:55880
BitTorren 2953 tomer_gold 21u IPv4 0xb012a9f71e864df1 0t0 UDP *:1900
BitTorren 2953 tomer_gold 37u IPv4 0xb012a9f722373df1 0t0 UDP *:6771
System 3260 tomer_gold 8u IPv4 0xb012a9f717346311 0t0 UDP *:*
System 3260 tomer_gold 34u IPv4 0xb012a9f718f9ff79 0t0 UDP *:*
Plex\x20M 3447 tomer_gold 29u IPv4 0xb012a9f731a52dd9 0t0 TCP *:32400 (LISTEN)
Plex\x20M 3447 tomer_gold 53u IPv4 0xb012a9f722374101 0t0 UDP *:32414
Plex\x20M 3447 tomer_gold 58u IPv4 0xb012a9f718fa0411 0t0 UDP *:32410
Plex\x20M 3447 tomer_gold 59u IPv4 0xb012a9f7223717a9 0t0 UDP *:32413
Plex\x20M 3447 tomer_gold 60u IPv4 0xb012a9f71e8636f9 0t0 UDP localhost:57886
Plex\x20M 3447 tomer_gold 61u IPv4 0xb012a9f71e862931 0t0 UDP 192.168.1.16:49525
Plex\x20M 3447 tomer_gold 63u IPv4 0xb012a9f71e8647d1 0t0 UDP localhost:63211
Plex\x20M 3447 tomer_gold 64u IPv4 0xb012a9f71e863ea1 0t0 UDP 192.168.1.16:52929
Python 3448 tomer_gold 13u IPv4 0xb012a9f731af3289 0t0 TCP *:55121 (LISTEN)
Plex\x20D 3449 tomer_gold 14u IPv4 0xb012a9f71e8633e9 0t0 UDP *:1900
Plex\x20D 3449 tomer_gold 17u IPv4 0xb012a9f731b57831 0t0 TCP *:1493 (LISTEN)
Plex\x20D 3449 tomer_gold 20u IPv4 0xb012a9f730226c69 0t0 UDP *:11212
Plex\x20D 3449 tomer_gold 24u IPv4 0xb012a9f71e863571 0t0 UDP *:12337
Plex\x20D 3449 tomer_gold 27u IPv4 0xb012a9f718f9f7d1 0t0 UDP *:9462
Plex\x20D 3449 tomer_gold 30u IPv4 0xb012a9f731b3a6a1 0t0 TCP *:32469 (LISTEN)
Plex\x20D 3449 tomer_gold 33u IPv4 0xb012a9f71e865101 0t0 UDP *:56901
Plex\x20D 3449 tomer_gold 39u IPv4 0xb012a9f731b3f289 0t0 TCP localhost:55122->localhost:55121 (CLOSE_WAIT)
Plex\x20D 3449 tomer_gold 40u IPv4 0xb012a9f718f9cb69 0t0 UDP *:51699
Plex\x20D 3449 tomer_gold 44u IPv4 0xb012a9f717347ea1 0t0 UDP 192.168.1.16:63242->192.168.1.1:5351
Plex\x20D 3449 tomer_gold 49u IPv4 0xb012a9f71e863a09 0t0 UDP *:60898
Plex\x20D 3449 tomer_gold 53u IPv4 0xb012a9f722374101 0t0 UDP *:32414
Plex\x20D 3449 tomer_gold 54u IPv4 0xb012a9f731a790f9 0t0 TCP localhost:32400->localhost:55116 (TIME_WAIT)
Plex\x20D 3449 tomer_gold 55u IPv4 0xb012a9f731ab7831 0t0 TCP localhost:32400->localhost:55117 (TIME_WAIT)
Plex\x20D 3449 tomer_gold 56u IPv4 0xb012a9f731a1edd9 0t0 TCP localhost:32400->localhost:55119 (TIME_WAIT)
syncdefau 3480 tomer_gold 15u IPv4 0xb012a9f731960ce1 0t0 TCP 192.168.1.16:55390->17.172.192.35:443 (ESTABLISHED)
syncdefau 3480 tomer_gold 16u IPv4 0xb012a9f731a7e0f9 0t0 TCP 192.168.1.16:55391->17.172.192.35:443 (ESTABLISHED)