sia
Decentralized data storage

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.

457 hosts
7.89 PB
Rent

Rent space and store your data on the Sia network.

Rent storage on Sia
Host

Offer your storage space on the Sia network.

Start hosting on Sia
Learn

Learn all about how Sia works, why it was created, and the non-profit foundation that maintains it.

Learn how Sia works
Grants

The Sia Foundation welcomes contributors from all over the world to come and build on Sia through our Grants program.

Apply for a developer grant
Storage companies and projects building on Sia

Sia is a thriving ecosystem of data storage enthusiasts, open source software, and commercial data storage platforms.

Browse all projects
Vup

Private and decentralized open-source cloud storage app with encrypted file sharing and media streaming support.

Learn more about filesharing with Vup
vup.app
S5

Content-addressed storage, but fast. Works with Sia and any S3-compatible storage provider.

Learn more about content-addressed storage with S5
docs.sfive.net
Delta Storage

Harnesses the power of multiple Decentralized Storage Networks, ensuring unparalleled data preservation, availability and seamless retrieval for all your valuable information across the globe.

Learn more about Delta Storage
www.delta.storage
SiaShare

SiaShare is an end-to-end encrypted file sharing software that uses the Sia decentralized storage network to store files.

Learn more about encrypted file sharing with SiaShare
github.com/mjmay08
Sia Satellite

An open-source network service that allows credit card payment for Sia storage.

Learn more about Sia Satellite
ss-alpha.online
Why projects choose Sia
Completely Private

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.

Highly Redundant

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.

Far More Affordable

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.

Designed for integration

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.

R&D leader

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.

Open Source

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.

Learn how Sia works

Find developer resources, tutorials, software downloads, and more.

Learn about the protocol
Learn how to rent storage space on the Sia network
docs.sia.tech
Learn how create a wallet and make transactions on the Sia network
docs.sia.tech
Learn how to offer storage space on the Sia network's storage marketplace
docs.sia.tech
Learn how to mine on the Sia network
docs.sia.tech
Read the latest updates

Read the latest from the core team and the ecosystem of developers building technology on top of Sia.

Browse the blog
The State of Sia, December 2024
Jan 9, 2025•
blog.sia.tech
Building a Sustainable Cloud
Dec 24, 2024•
blog.sia.tech
The State of Sia, November 2024
Dec 12, 2024•
blog.sia.tech
The State of Sia, September 2024
Oct 9, 2024•
blog.sia.tech
The State of Sia, August 2024
Sep 11, 2024•
blog.sia.tech
Overview
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Tools
Siascan Explorer
Sia Central Host Explorer
Sia Central Host Troubleshooter
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Get Siacoin
Network

511,131 block height

86,116 online hosts

457 active hosts

Storage

7.89 PB total storage

2.31 PB used storage

427 M total registry

3 M used registry

Development

20,996 commits

71 contributors

470 forks

43 releases

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