Video: Facebook Messenger vs Skype

Facebook Messenger is an instant messaging service and software application which provides text and voice communication. Available now for Android and iPhone. Secure Facebook Messenger alternatives are Signal and Telegram. If you are looking for Facebook Messenger alternatives for business pay attention to GoToMeeting, Skype for Business.
Skype is a software application that allows users to make voice and video calls and chats over the Internet. Calls to other users within the Skype service are free, while calls to both traditional landline telephones and mobile phones can be made for a fee using a debit-based user account system. Skype has also become popular for its additional features which include instant messaging, file transfer, and videoconferencing. Skype alternative for enterprise is called Skype for Business. Secure Skype alternatives are Signal and Telegram.
Face to face in the news:

2015 - Facebook launched enterprise messenger to stand out over Skype

Facebook at Work, the version of Facebook designed for chatting with colleagues on a private social network, now has its own chat client as well. Somewhat like Facebook at Work’s version of Messenger, the new Work Chat app, as it’s called, allows coworkers to message each other individually, participate in group chats, share photos and videos, make voice calls, and even use stickers. The Android app is already available, and the iOS version is in the works and will arrive soon. The enterprise version of Facebook looks a lot like the consumer version of Facebook, and includes its own website as well as Facebook at Work mobile applications for iOS and Android. Employers can set up new accounts for their staff to use on the platform, and users can choose to link their personal and work accounts together. The service also allows for other business use cases, like document sharing, discussions, announcements, groups, project collaborations, events, and more.

2010 - Cisco may acquire Skype. Facebook Messenger is in panic

Cisco Skype
Several more or less reliable sources reported that Cisco is going to buy Skype before the company complete the IPO process. If this is true, then Cisco will strenthen its leadership on the video and unified communications markets. This acquisition will also mean the synergy of corporate and consumer communications (which is beneficial for both companies and their customers). Moreover, the protocol of these communications - will be closed, which perfectly fits Cisco's strategy and will protect its monopoly. On the other hand, the current Skype co-owners (Silver Lake) are also co-owners of Avaya - the main Cisco's competitor on the unified communications market. And they are not interested in creating such a monster as Cisco Skype. But the supposed price tag - $ 5 billion - can be a very strong argument. Recall that two years ago Google was also going to buy Skype, but antitrust concerns may have persuaded them not to make an actual offer.