Zoiper is a free softphone that can be ran on multiple platforms. Zoiper can be setup for the use of SIP, IAX or XMPP. To download Zoiper click Here. This link will provide a link to the operating systems available. There are multiple versions of Zoiper available both free and Paid. The newest version includes multiple skins, and revamped settings pages. If you chose to download the free version, you will still be available to upgrade there is a direct link inside the Premium tab.
Creating a new account may be done 2 different ways. Either through Settings -> Create a new account, or Settings -> Preferences -> Create account
If you would like to make any more changes, or add or remove any accounts this may be done through the Preferences tab.
The new update to Zoiper is a much more user friendly interface with multiple skins available. There is still the option to have multiple accounts present and active. Codec settings may also be setup per account instead of globally. While the software is free, there are multiple options that are locked down to the Zoiper Biz edition which cost around $45 and, has features such as: g729 and h264 codec, conferencing, call recording, transfer, Outlook on Windows, Presence, and unlimited number of accounts.
Zoiper is a free SIP client that supports both SIP and IAX calls over 3G or WiFi connections. Zoiper has a simple user interface, with few menu items. Zoiper can work on most devices that are 2.1 and up. To begin you will need to have the SIP client installed, if you do not, you can download it for Android here, or you can download it for iOS devices 4.3 and higher here.
After opening the app you will be greeted with the Dialer screen.
Next go to the Config Tab and select Accounts
In the Accounts Tab you will have the option to add and manage Accounts. Select Add then SIP
To begin you will need your account information, then go to the Config tab, and select the Accounts then Add account
Account Name: IPComms this will be used as an identifier for the account
Username: NPANXXXXXX (this will be your SIP User)
Password: Password (this is your SIP password)
After testing this app on both 3G and WiFi networks, we were able to make and receive calls with no issues. Since the app integrates your phonebook, calls can be quickly made through the app to any of your contacts. This softphone does not contain any ads, which helps to not drain your battery.
Ekiga is an open source softphone that can be used for Linux, and Windows.
X-Lite is a free softphone app made by Counterpath. X-Lite allows registration for one SIP account, and also allows the use of IM/Presence. X-Lite supports multiple audio and video codecs, as well as several firewall solutions.