Here are some useful links for the people who are visiting or/and living in Japan.

Information on Japan

Japan with Kids
http://www.tokyowithkids.com/
Japan Zone
http://www.japan-zone.com/
Living in Japan
http://www.japan-guide.com/
Official Tokyo Travel Guide
http://www.gotokyo.org/en/
TBS Weather Guide
https://www.tbs.co.jp/weather/

Publications

Metropolis (Tokyo Classified)
http://metropolis.co.jp/
The Japan Times
http://www.japantimes.co.jp/

Transportation

Tokyo Metro Route Map
https://www.tokyometro.jp/en/subwaymap/
JR East Route Map
http://www.jreast.co.jp/e/info/map_a4ol.pdf
Train Route Finder (Jorudan)
http://www.jorudan.co.jp/english/norikae/
Route Finder (Hyperdia)
http://www.hyperdia.com/en/
Toei Transportation Information
http://www.kotsu.metro.tokyo.jp/eng/
Metropolitan Expressway Map
http://www.shutoko.co.jp/english/drive/map
Limousine Bus (Airport Bus)
http://www.limousinebus.co.jp/en/
Narita Express
http://www.jreast.co.jp/e/nex/

Conversion

Currency Converter
http://www.xe.com/currency/?currency=
Temperature
http://www.convert-me.com/en/convert/temperature/
Distance
http://www.onlineconversion.com/length_common.htm

Medical

Medical Information Service
https://www.himawari.metro.tokyo.jp/qq13/qqport/tomintop/other/fks240.php
Import of Medication
http://www.mhlw.go.jp/english/topics/import/

Embassies & Clubs

Embassies in Japan A-H
http://www.mofa.go.jp/about/emb_cons/protocol/a-h.html
Embassies in Japan I-P
http://www.mofa.go.jp/about/emb_cons/protocol/i-p.html
Embassies in Japan Q-Z
http://www.mofa.go.jp/about/emb_cons/protocol/q-z.html
Tokyo American Club
https://www.tokyoamericanclub.org/index.php/en/

Apps

The Weather Channel
https://play.google.com/store/apps/details?id=com.weather.Weather&hl=ja
Weather info in various locations.
Earthquake Info
https://play.google.com/store/apps/details?id=com.topstcn.eq&hl=ja
Earthquake info in various locations.
Mapple-Link
https://play.google.com/store/apps/details?id=jp.mappleon.android.mapplelink
Map and guide for tourists to Japan.
Hyperdia
https://play.google.com/store/apps/details?id=com.hyperdia.android.activity&hl=ja
Train and airline info in English.
Tokyo Subway Navigation
https://play.google.com/store/apps/details?id=jp.tokyometro.tokyosubwaynavi
Detailed info for Tokyo’s subway.
Tokyo Subway Guide
https://itunes.apple.com/us/app/tokyo-subway-guide/id329358781?mt=8
Check the position of the home floor, stairs and elevators.
Uber
https://play.google.com/store/apps/details?id=com.ubercab&hl=ja
Calling taxi and payments.
Navitime for Japan Travel
https://play.google.com/store/apps/details?id=com.navitime.inbound.walk
Transit and wi-fi search in English.
Japan Connected-free Wi-Fi
https://play.google.com/store/apps/details?id=com.nttbp.jfw
Free Wi-Fi for foreign visitors to Japan.
GoodLuck Trip
https://play.google.com/store/apps/details?id=jp.goodlucktrip.goodlucktrip
Magazine for visitors to Japan.
Gurunabi
https://play.google.com/store/apps/details?id=jp.co.gnavi.frg.activity
Restaurant info in English.
Japan Life Guide
https://play.google.com/store/apps/details?id=jp.co.rcsc.livingguide.android
Information for living in Japan.
JED
https://play.google.com/store/apps/details?id=com.umibouzu.jed&hl=ja
Offline Japanese Dictionary.
Kanji Recognizer
https://play.google.com/store/apps/details?id=org.nick.kanjirecognizer&hl=ja
Offline Kanji Dictionary.
NHK WORLD RADIO JAPAN
https://play.google.com/store/apps/details?id=jp.or.nhk.nhkworld.radio.japan.android&hl=ja
Radio provided by NHK.
NHK WORLD TV LIVE
https://play.google.com/store/apps/details?id=jp.or.nhk.nhkworld.tv
News and information provided by NHK.