These apps work on android and apple phones (apart from peanut android only ) and any version of windows some applications also work on macs.

As they are for licensed radio amateurs only you must submit a copy of your ham licence to get registered.
Voip is ideal if you like to have long chats and like to get know your fellow hams around the world as the contacts are not affected by radio propagation and they are also useful if you are unable to put up big antennas to work dx

Given that there is now little or no activity on many vhf/uhf simplex and repeater frequencies Voip is a good place to find activity.

Today many HF contacts are very short just a quick signal report exchange and on to the next one.

Some of the rooms on Voip link out on RF crossing over to  different modes dmr dstar p25 nxdn m17 fusion etc from analogue so you also do have to be registered for dstar and dmr to be carried over those networks.

If you have any problems or questions about setting up and getting voip apps working please drop me an email.

Ian g3zhi@hotmail.com

peanut www.pa7lim.nl/peanut/ (excellent audio for people with hearing difficulties)

dudestar/droidstar http://www.dudetronics.com/index.php/dude-star-radio-project access to most of the digital modes from a Windows PC or Android device

hamshack hotline http://hamshackhotline.com/ needs a cisco SIP phone

allstar https://www.allstarlink.org/ (to use the webtransceiver on a windows

computer use the pale moon browser https://www.palemoon.org/ any problems please contact me)

M0FXB video on setting up allstar https://www.youtube.com/watch?v=2lefo7xndTg

Mac users may want to also consider Transceive https://transceive.app a native macOS application that let you administer linked nodes, monitor traffic and transmit audio on your AllStar node. It also supports the AllStar Public Authentication used by the web transceiver so you can connect directly to public nodes with
your AllStar account. Experience the AllStarLink network without the complexity of setting up a node. this app is not free

Echolink https://secure.echolink.org/

You may also come across IRLP on your local repeater here is the world wide list of connections:
http://www.irlp.net/status/index.php?PSTART=3

aprsdroid for android https://aprsdroid.org/

shows hams location if they are beaconing aprs and others using aprs eg ships on the world wide map https://aprs.fi/#!lat=53.4365&lng=-1.354  which anyone can look at aprs for apple can be downloaded from the apple playstore
your aprs position can also be sent over the radio on rf​

If you use google earth you can download the kml/kmz files which will show echolink/irlp nodes aprs stations and repeaters around the world.

http://www.irlp.net/setup-irlp.kml irlp stations locations
https://secure.echolink.org/node_location.kmz echolink stations locations
https://rsgb.online/ukrepeater.kml uk repeater locations