When comparing SecureChat vs TeamSpeak 3, the Slant community recommends TeamSpeak 3 for most people. In the question“What is the best team chat software?” TeamSpeak 3 is ranked 18th while SecureChat is ranked 22nd.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Threads to organize conversations
Supports threads to organise conversations into topics.
Pro Expiring messages
Channels can be configured to have expiring messages that get automatically deleted after a pre-defined time.
Pro Guaranteed delete
Ensures messages are fully deleted and removed from backup.
Pro Servers 100% hosted in Switzerland
Protected by Swiss data privacy - some of the highest data privacy laws in the world.
Pro Encryption
Strong end-to-end encryption of messages and files.
Pro Drag and drop files
Drag and drop documents, photos, videos into the chat.
Pro Integrates with other tools
Built in integrations for Zendesk, Trello, Github, SupportBee, etc.
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 Non-free / Propritary Software
The code base isn't free/libre and cannot be self-hosted, therefore there is no proof that encryption or "guaranteed delete", actually work. There is no reason to think this application is secure.
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.
