Send large files faster thanks to a direct connection between the devices and our intelligent network detection.
Get it for all platforms!
Through our encryption technology and our specially developed end-to-end encrypted transfer protocol, each sent message or file is protected against unauthorized insight. Since Sid works without a telephone number adjustment, only you decide with whom you are communicating with and who knows your Sid address.
Sid fulfills the criteria of the European and German data protection laws and stores all cached messages and files end-to-end encrypted on German servers.
Set up your team easily and start right away with secure messaging and file transfer. Sid is ready for use within a few seconds. 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.
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 possible 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.
Sid clients are available for desktop computers, notebooks, tablets and as native apps for iPhone 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.How to pair devices...
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...
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.