Cryptography has unleashed the latent power of the Internet by enabling interactions between mutually-distrusting parties. Sia [sigh-uh] harnesses this power to create a trustless cloud storage marketplace, allowing buyers and sellers to transact directly. No intermediaries, no borders, no vendor lock-in, no spying, no throttling, no walled gardens; it's a return to the Internet we once knew. The future is making a comeback.
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Learn all about how Sia works, why it was created, and the non-profit foundation that maintains it.Read more
The Sia Foundation welcomes contributors from all over the world to come and build on Sia through our Grants program.Apply for a grant
Sia is a vibrant community of contributors building open source and commercial data storage software on the Sia network.Explore
A next-generation Sia renter, developed by the Sia Foundation. Smart defaults and a highly extensible API.Learn more
A next-generation Sia host, developed by the Sia Foundation. Built for performance and reliability.Coming soon
Sia is a thriving ecosystem of data storage enthusiasts, open source software, and commercial data storage platforms.
S3-compatible object storage powered by blockchain and the Sia network.Learn more about Filebase
Private and decentralized cloud storage app with encrypted file sharing and media streaming support.Learn more about Vup
File sharing site that uses the Sia network.Learn more about PixelDrain
Decentralized CDN and file sharing platform for developers.Learn more about Skynet
Customizable secure multi-cloud in France. End-to-end encryption. Very high availability. No commitment.Learn more about Arzen
Sia encrypts and distributes your files across a decentralized network. Unlike traditional cloud storage providers, you truly own your data: no third party can access your files or prevent you from accessing them.
Sia distributes and stores redundant file segments on nodes across the globe, eliminating any single point of failure and achieving uptime and throughput that no centralized provider can compete with.
On average, Sia's decentralized cloud storage costs 90% less than incumbent cloud storage providers. Storing 1 TB of files on Sia costs about $1-2 per month, compared with $23 on Amazon S3 - bandwidth is also a magnitude cheaper.
The Sia software exposes highly modular JSON-speaking endpoints.
renterd can even scale horizontally: in stateless mode, it provides raw access to the Sia renter-host protocol, with no UI, no blockchain, and no disk I/O — perfect for massive renting operations.
The Sia storage network has been securely storing data since 2014. Sia has pioneered the use of many new technologies at scale, such as its use of state channels to process an estimated 20 billion micropayments per day.
Sia's software is completely open source, with contributions from leading software engineers. Sia has a thriving community of developers and companies building innovative applications and businesses on top of Sia.
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Read the latest from the core team and the ecosystem of developers building technology on top of Sia.