SkypeTab-NG adds tabs in the window of Skype for Linux and combines the contacts window, talk and chat in the same window.
Sorry for the spelling and phonetic errors in the text.
Owner and main writer of MintGuide.org is not a native English speaker.
SkypeTab-NG is a small application written Russian developer
Installation into Linux Mint:
sudo add-apt-repository ppa:keks9n/skypetab sudo apt-get update sudo apt-get install skypetab-ng
On completion of installation remove Skype from the startup and close the application, then start SkypeTab-NG from the menu.