Skype vs TeamSpeak 3
When comparing Skype vs TeamSpeak 3, the Slant community recommends TeamSpeak 3 for most people. In the question“What is the best voice chat for gaming?” TeamSpeak 3 is ranked 4th while Skype is ranked 10th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easily connect with others due to how popular the service is
There's a good chance that whoever you're trying to reach has Skype already set up and familiar with it, avoiding the hassle of installing and getting to know new software.
Pro Screen sharing
You can show your whole desktop, a select part of the screen or a specific window over Skype.
Pro Cross-platform
There's software for Windows, Mac & Linux and apps are available on iPhone, Android, and Windows Phone.
Pro Group video for free
You can hold video calls with up to 10 people.
Pro Available on Linux
A stripped down, minimalist version of Skype is available for Linux.
Pro File sharing
Skype allows you to send any files (MP3s, images, text, etc.) by simply dragging and dropping then in the chat window making it simple to share things with colleagues.
Pro Cheap fixed phone number
Starting at $5/mo you can get a Skype number.
Pro Send SMS and make regular calls
With Skype Credit bought or a subscription, you can send SMS and make direct calls.
Pro Group chat with archive / records
Pro Powerful 1:1 chat and also group chat
Pro A lot of features
Pro Fine-grained administration options
Allows for complex administrative structures, with lots of roles and many other features related to server administration.
Pro Advanced permissions
It has an advanced system to manage channel/server permissions.
Pro Works on all main PC OS platforms
Available on Windows, Linux and OS X allows for a user to choose what best OS suits them and not have to worry if their game chat software will work.
Pro Supports audio and text chat
TeamSpeak allows for both voice and text chat. this adds flexibility, and can clarify information if somebody has a very poor connection, or a very thick accent. It also allows players without a mic to communicate with the other players.
Pro Widely used
Among most MMOs (massive multiplayer online games such as Guild Wars 2, or World of Warcraft) Teamspeak is widely used so it's likely other players already use it and won't need to download a new program. There are also many knowledge and help articles available online.
Pro Voice Activation Detection while using Push-To-Talk
Pro Echo reduction
Pro Free for non-commercial use
As long as one is not using TeamSpeak for commercial services the app is free to use. This is great as most users will not be using it for commercial purposes (as long as you aren't making money off it you don't need to pay for it) such as gaming.
Pro Unlimited nesting of channels
This allows for very granular organization.
Pro Sound level tuning
You can tune everyone's sound output levels to meet your own personal preference in inbound volume. So to your ears nobody is too loud or too quiet.
Pro Supports Encryption
Under "Edit Channel" --> "Advanced" --> theres a toggle button called "Voice Data Encrypted". Everything but file transfers is encrypted.
Pro Plugin support
A wide range of plugins are available for those that want extra functionality, ranging from soundboards and overlays, to peripheral and application hooks.
Pro Private hosting
You can host your own server.
Pro TeamSpeak Sync
Signing up for a MyTeamSpeak account will allow you to synchronize your bookmarks, identities, hotkeys, whisper lists and channel subscriptions across all devices. MyTeamSpeak features will include addons synchronization, addons update management, and more.
Pro Clean theme
Pro No privacy nightmare
Cons
Con Plagued by bugs on all platforms
Crashes and other bugs are prevalent on Android, Windows and other platforms.
Con Subpar video quality with more than 5 users
Skype has significant problems with multiple users and video quality. Skype recommends that a max of 5 users group chat as video quality is severely affected. Even webcams tested with other chat services showed lower quality when used with Skype.
Con Not a feasible alternative as a professional team chat
Missing key feature such as centralized mgmt, centralized billing, data retention policies, ...
Con Poor quality when screensharing
It is not possible to manually set resolution or bitrate, and Skype often defaults to a resolution so low that text is unreadable. It is also not possible to transfer control over mouse and keyboard.
Con Slow filesharing speed

Con Owned by Microsoft
Con Obnoxiously large ads
Ads take up over 25% of the usable space.
Con Poor Linux support
The version available for linux users is quite outdated, and does not support some of the newer functionality, such as the free group video calling and screen sharing.
Con Requires both ends to be online (if neither end is using a cloud-enabled device)
Messages are sent and received only when both ends are online, if neither end is using a cloud-enabled device. In this case, if you are online 9-17 and your recipient is online 18-3, messages will never be delivered.
Con MIcrosoft (Skype's owner) actively assists eavesdroppers
On the other hand, if you lose your copy of one of your conversations, you may be able to get a copy of it from your government with a little bit of luck and a public records request.
Con Mobile app costs money
TeamSpeak for mobile platforms costs $1.99 for Android devices in Google play store or $4.99 for devices that run iOS.
Con Requires to self-host, rent or use a public server
TeamSpeak cannot be used without a private server (meaning TeamSpeak themselves do not provide servers). This adds complexity to the setup and may simply be out of reach for many users. There are, however, several free public servers available, Teamspeak offers to rent one, and many games have dedicated servers available through their respective websites.
Con Outdated UI
The client itself feels really old, and even though there are custom huds, most of them don't feel modern.
Con Proprietary software
It's not free.
Con No video communication
Currently there is no video chat for the app. While not essential for in-game communication, outside of the game it would help to strengthen online relationships with your gaming pals.
Con Too easy to hack
Your server may become vulnerable if you give admin away and do not configure your server properly.
Keeping a record of backups is important, if you broke something while editing the configuration or your server has become compromised due to negligence. You will then be able to spin up a new instance.
