Midnight Network is a data protection blockchain, where Developers and businesses can build decentralized applications that safeguard sensitive data, without sacrificing performance and regulatory requirements. Developers can build on Midnight in a novel and easy to use programming model based on Typescript, and zero knowledge (ZK) proofs.

FLock.io aims to build a decentralized, privacy-preserving solution for Artificial Intelligence. It has proposed a research initiative called Federated Learning Blocks (FLocks for short), which uses blockchain as a coordination platform among data holders to conduct Machine Learning while keeping data local and private. By replacing the central entity that collects data and organizes machine learning with blockchain, FLocks aims to empower users to mine insights from their own data and monetize at their own discretion.

Zcash is a privacy-preserving cryptocurrency that provides anonymous value transfer using zero-knowledge cryptography. The protocol offers the option to make transactions either shielded, which will be completely anonymous, or transparent, which will be visible on the Zcash blockchain.

Octra is an FHE blockchain network with support for isolated execution environments. The majority of the codebase is developed in languages such as OCaml, AST, ReasonML (the language for smart contracts and applications for interacting with the Octra blockchain network), and C++.

Canton Network is a public blockchain with institutional-grade privacy that features a highly configurable privacy-preserving mechanism at its core. Its on-chain tokenized assets are massive, and its proven institutional-grade scale synchronizes previously siloed systems with the configurable privacy and control needed to unlock asset liquidity in the tradfi and crypto ecosystems. Governed by the Canton Foundation and with the participation of global financial institutions, Canton enables real-time, secure synchronization and settlement across multiple asset classes on a shared, interoperable infrastructure. Originally developed by Digital Asset, the network is now open-source, powered by its native token, Canton Coin, and supports decentralized governance and collaborative application development.

Privacy Cash is a privacy protocol based on Solana that allows users to deposit SOL into a privacy pool and withdraw from the privacy pool to any recipient address.

Seismic is a blockchain encrypted at the protocol level with encrypted global state, memory access and data flow. Seismic's protocol ships as a set of sequencers that plug into any chain.

Hinkal is a ZK-based solution that provides a private smart contract wallet experience, allowing users to participate in their favorite dApps directly from their private addresses without the need to withdraw assets for obfuscation. Hinkal enables privacy of transactions and assets across core DeFi apps and functions, including trading, farming, staking, and lending through the use of stealth addresses and with high degree of compliance.

Nesa is the lightweight Layer-1 executing critical AI inference on queries that require a high degree of privacy, security, and trust using ZKML on-chain.

Aleo is a developer platform for building fully private, scalable, and cost-effective applications. It uses zero-knowledge cryptography to move smart contract execution off-chain, enabling a diverse range of decentralized applications that are both entirely private and can scale up to thousands of transactions per second.

Monero is an open-source, privacy-oriented cryptocurrency that was launched in 2014. Its blockchain is intentionally configured to be opaque, making transaction details such as the identity of senders and recipients and the amount of each transaction anonymous by disguising the addresses used by participants.

Anoma is an intent-centric architecture, introducing a new paradigm for building infrastructure layers and a new operating system for decentralized applications. Anoma’s intent-centricity introduces novel primitives that allow existing web2.5 dApps to be fully decentralized, such as optimistic and ZK rollups, DEXs, NFT marketplaces, or public goods funding applications like Gitcoin.

Zama is a cryptography company building open source homomorphic encryption tools for developers.Homomorphic encryption (FHE) is a technology that enables processing data without decrypting it. This can be used to create private smart contracts on top of public, permissionless blockchains, where only specific users would be able to see the transaction data and contract states.

Arcium is a parallelized confidential computing network. It provides developers and applications with a trustless, verifiable, and efficient framework to run encrypted computations. Arcium aims to bring confidentiality to every on-chain application and become the global computing network for the decentralized internet. Multiparty computation eXecution Environments (MXEs) are the backbone of the Arcium Network. They combine Multiparty Computations (MPC), Fully Homomorphic Encryption (FHE), Zero-Knowledge Proofs (ZKPs), and more to enable encrypted computations.

Brave is a privacy-focused internet browser that aims to change the digital advertising relationship between customers and advertisers. BAT is the native token of the platform, which is used as a payment mechanism between advertisers, publishers, and users.

Billions Network is a digital identity verification platform designed to offer a future where humans and AI can trust each other, including Sam Altman’s crypto project, World. The platform, which utilizes zero-knowledge proof tech, seeks to provide a scalable and secure method for verifying both human and AI identities.

ZERA Wallet brings privacy to everyday crypto: featuring shielded balances, private & offline P2P transfer and private swaps on Jupiter/Raydium that route directly to and from shielded balance.

Zaïffer is a decentralized platform that enables users to confidentialize any token on any EVM-compatible chain, allowing for private transactions within existing DeFi applications.

Polygon Miden is the Edge Blockchain grants applications the power to scale with public and private transactions. With edge execution and self-custodied state control, users keep full control of their data and transaction details. Miden enables safe smart contract development with Rust and built-in account abstraction, while also minimizing attack surface with native asset storage for user accounts.

Vanish is a Solana-based privacy trading solution. Whether users want to open positions without signaling or take discreet profits, Vanish offers execution privacy that no other platform can provide.

Umbra is the transaction privacy protocol on Solana. Whether users make personal payments, transfers, or transactions, Umbra ensures that their financial flows are private and secure.

Tari is a blockchain protocol focused on digital assets, built in Rust, private by default, open source, and architected as a merge-mined sidechain with Monero. It enables creators to design new types of stories and experiences.

Beldex is a privacy-based ecosystem comprising of privacy-first decentralized applications, such as BChat, BelNet, the Beldex Browser, the Beldex Privacy Protocol, and the Beldex Bridge.

Espresso is a global confirmation layer that provides L2 chains with fast, reliable transaction confirmations backed by BFT consensus. Espresso's confirmation layer can prevent sequencer equivocation, protect against reorgs, and reduce finality risk for solvers in intent-based systems. Its versatility means chains can also use it as a decentralized sequencer and low-cost data availability layer.

Multiple Network is a Web3 Privacy Acceleration solution for AI that provides privacy protection and data acceleration services based on P2P and SD-WAN technologies. By aggregating the bandwidth of distributed nodes, it offers anonymous communication and encrypted transmission services. Multiple Network provides higher bandwidth and lower latency, widely used in AI model invocation, search engine interactions, and the encryption and acceleration of large-scale sensitive data, enhancing the efficiency and security of AI model training and inference.

Dusk Network is the privacy blockchain for financial applications. Its mission is to enable enterprises of any size to collaborate at scale, meet compliance requirements and ensure that personal and transaction data remains confidential.

Nym is a privacy platform that provides strong network-level privacy against sophisticated end-to-end attackers, and anonymous access control using blinded, re-randomizable, decentralized credentials. It protects privacy at the network layer by encrypting and relaying users' internet traffic through a multi-layered network called a mixnet. In each layer of the mixnet, mix nodes mix users' internet traffic with that of other users, making communications private and hiding metadata such as IP address, who they are talking to, when and where, and more.

The Oasis Network is a Layer 1, proof-of-stake, decentralized network designed to support the next generation of blockchain applications. It is incredibly versatile, agile, and customizable. Moreover, it supports confidential smart contracts, enabling sensitive data to be used by Dapps and unlocking new use cases and applications of blockchain technology.

NØNOS is a ZeroState Operating System built in Rust, supporting a decentralized ecosystem with zk-capsules for encrypted state portability, onion mesh networking for anonymity, and post-identity applications for privacy.

RAILGUN is a privacy system built directly, enabling users to interact directly with DEXs and other DeFi applications. Individuals can engage in cryptocurrency and DeFi-based activities, ensuring financial freedom without worrying about being spied on by anyone.