Sia
Sia is the world's safest cloud storage, by design.
Sia is a decentralized, encrypted cloud storage network that addresses the concentration, privacy, and availability risks of centralized storage. Files are split into encrypted shards and distributed across a peer-to-peer network, so no single provider holds the complete data set. The project is open source and maintained by the non-profit Sia Foundation, which supports the protocol, community, and ecosystem.
The network provides encrypted storage and retrieval, with distributed workloads and parallel retrieval. The Sia Storage app is available for iOS and Android, and the ecosystem includes S5, a content-addressed storage layer that works with Sia and any S3-compatible provider, along with Vup, an open-source app for encrypted file sharing and media streaming. The project also offers SDKs, including a Reed-Solomon library for Rust, and maintains documentation, a roadmap, and community channels.
Sia is aimed at individuals, developers, and commercial platforms that want encrypted, decentralized storage and privacy-preserving applications. The Sia Storage app offers a free allocation of 50 GB. The broader network is open source, and the Foundation supports ecosystem projects through grants.
12 alternatives to Sia
Ranked by how well each tool replaces Sia: shared features, audience, price and popularity.
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Covers 2 of 14 key features.
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MEGA: Online privacy for everyone — secure encrypted cloud storage by default.
Covers 2 of 14 key features.
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Covers 3 of 14 key features.
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Free and open-source cloud storage encryption
Covers 3 of 14 key features.
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Covers 1 of 14 key features.
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