You have been invited to use Sid for end-to-end encrypted team communication.
To join the team J-NAeUUa4_1Rx3rG you need to install the free Sid app
Please choose your operating system
Get Sid as native app for all your devices.
Get the macOS Installer here: SidInstaller.dmg
Get the Windows Installer here: SidInstaller.exe
Get the Ubuntu app here:
Sid is ...
Fast communication: One-to-One or within groups
Set up your team easily and start right away with secure messaging and file transfer. Use it for private and team communication. Team contacts are exchanged with every new team member automatically.
Sid comes with structured communication in dedicated channels: Organize your team conversation and customize it to match your personal needs.
Available for mobile & desktop devices
Sid clients are available for desktop computers, laptops and as native apps for iOS and Android. You can use it on any operating system like your computer in the office or on your smartphone anywhere else.
Whatever you do on one device is reflected on all other devices, so everything is kept in sync.
Security by design
Sid uses end-to-end encryption for every message and file transferred. The encryption keys are generated and stored on your devices only. Unlike other password driven systems, your private key is used for authorization and authentification.
When working with Sid, your data is safe and no third-parties can decipher the data while being transferred. No one will be able to read your messages or decrypt your files.
We only support clients that run on your device natively to ensure maximum security.Read more about our encryption technology...
Peer-to-peer & local file transfer
Sid is using a decentralized peer-to-peer technology to transfer data without uploading to a server or cloud. Your data is routed the fastest possibe way without taking detours and will use the local network if applicable.
Exchange files of any kind and size with individuals, teams and external contacts.
Your data is always accessible
Your messages and files are stored locally and synchronized through all your devices, always accessible, even offline.
Sid keeps your team communication and data in a dedicated area separated from all your other documents.