Truly secure
Files are encrypted on your device before upload. Nobody can read them. Not even us.
Unlock cloud storage that can't spy on you.
Encrypted, decentralized storage where no one holds the keys but you. Start with 50GB free.
Storage without compromise
Always available
Built-in redundancy across independent hosts worldwide. No single point of control or failure.
Just storage
No advertisers mining your data. No trackers watching your activity. No AI training on your files.
Built to grow
Open source at its core. A growing ecosystem of apps and tools built by developers worldwide.
Fast & reliable
Parallel downloads from multiple hosts mean faster speeds and zero downtime. Your files are always there when you need them.
Ready to try it?
Get Started for FreeSimple, honest pricing
Something for everyone
Whether you're accessing files on the go or integrating Sia into your existing tools, we've got you covered.
Sia Storage App
Access your files from any device. Upload photos, download documents, and manage your storage wherever you are.
Available for iOS, Android, and desktop
S3d
S3-compatible API that works with the tools you already use. Rclone, Cyberduck, or any S3-compatible client—just point it at Sia.
Drop-in replacement for Amazon S3
Developer-friendly
Sia's open platform welcomes developers. Build your own apps, integrations, or tools.