The exchange layer for the crypto economy The world's assets are becoming tokenized on public blockchains. 0x Protocol is free, open-source infrastructure that developers and businesses utilize to build products that enable the purchasing and trading of crypto tokens.

Support for all Ethereum Standards 0x Protocol facilitates the decentralized exchange of a growing number of Ethereum-based tokens, including all ERC-20 and ERC-721 assets.

Networked Liquidity 0x is lowering the barrier to entry by building a layer of networked liquidity that allows businesses to tap into a shared pool of digital assets.

Flexible Integration 0x is a modular system that enables businesses and projects, known as relayers, to easily add exchange functionality to any product experience.

From https://0x.org/why.

1inch is a distributed network for decentralized protocols on Ethereum and BSC (Binance Smart Chain) enabling the most lucrative, fastest and protected operations in DeFi (decentralized finance).

The 1inch Network consists of 5 distinct yet interoperable components:

• The 1inch Aggregation Protocolfacilitates cost-efficient and secure atomic transactions by utilizing a wide range of protocols and performing argument validation and execution verification. Users leverage the Aggregation Protocol anytime they interact with 1inch in order to find and execute the most efficient transactions across DEXes.

• The 1inch Liquidity Protocol is a next-generation automated market maker that protects users from front-running attacks and offers capital efficiency to liquidity providers.

• The 1inch Network is governed by the 1inch DAO, a decentralized autonomous organization that enables 1INCH stakers to vote for key protocol parameters and take part in the network’s governance.

• A key contributor to the 1inch Network is 1inch Labs, a decentralized group of software builders that develop a range of open-source protocols governed by users through the 1inch DAO.

• The 1inch Foundation is a non-profit organization that issued the 1INCH token and is dedicated to fostering the 1inch Network and initiatives that benefit the network’s community. The 1inch Foundation incentivizes contributions through grants and other capital deployment vehicles.

From https://help.1inch.io/en/articles/4585093-what-is-1inch

Basis Cash is a decentralized algorithmic stablecoin that is soft-pegged to 1 DAI. It's stabilization mechanism uses seigniorage shares to expand and contract the Basis Cash (BAC) money supply. It is a fair-launch project inspired by the now-defunct basis.io.

BoringDAO is a decentralized bridge that connects all blockchain assets, we offer users a safe way to maximize their utilization rate of crypto assets.

From https://boringdao.com/.

TrueFi is a protocol for on-chain uncollateralized lending. TrueFi aims to become the ultimate market-driven, automated credit rating and lending system

From https://truefi.io/

Aave is an open source and non-custodial protocol enabling the creation of money markets. Users can earn interest on deposits and borrow assets.

From https://aave.com/.

Badger is a decentralized autonomous organization (DAO) with a single purpose: build the products and infrastructure necessary to accelerate Bitcoin as collateral across other blockchains.

It’s meant to be an ecosystem DAO where projects and people from across DeFi can come together to collaborate and build the products our space needs. Shared ownership in the DAO will allow builders to have aligned incentives while decentralized governance can ensure those incentives remain fair to all parties. The idea is less competing and more collaborating.

Read our introduction at https://badgerdao.medium.com/introducing-badger-dao-ed47a586c619

Balancer is a protocol for programmable liquidity

Generalized AMM
Customizable number of assets and weights within a pool

Global Liquidity
Trade against all pools in the Balancer ecosystem for best price execution

Smart Pools
Pools controlled by smart contracts can implement any arbitrary trading strategy or logic

From https://balancer.finance/.

The Bancor Protocol is a fully on-chain liquidity protocol that can be implemented on any smart contract-enabled blockchain. The Bancor Protocol is an open-source standard for liquidity pools, which in turn provide an endpoint for automated market-making (buying / selling tokens) against a smart contract.

• Bancor Network currently operates on the Ethereum and EOS blockchains, but the protocol is designed to be interoperable for additional blockchains.
• Our implementation can be easily integrated into any application enabling value exchanges.
• Our implementation is open source and permissionless, and ecosystem participants are encouraged to contribute to and enhance the Bancor Protocol.

From https://docs.bancor.network/

BarnBridge is the first risk tokenizing protocol. It allows hedging yield sensitivity and market price.

The purpose of BarnBridge is to integrate with other protocols letting hedging the yield risks on those lending and other platforms.

From https://barnbridge.com/.

Compound is an algorithmic, autonomous interest rate protocol built for developers, to unlock a universe of open financial applications.

The majority of cryptocurrencies sit idle on exchanges and in wallets, without yielding interest. We're on a mission to change that.

From https://compound.finance/.

Curve is an exchange liquidity pool designed for extremely efficient stable-asset trading. Its main goal is to let users and other decentralised protocols exchange stable assets (stablecoins, different kind of Bitcoin on Ethereum) through it with low fees and low slippage.

Curve is fully decentralized and all decisions about the protocol are taken by CRV holders.

Unlike exchanges out there that match a buyer and a seller, the behaviour of Curve is different, it uses liquidity pools. Liquidity providers deposit one or more stablecoins in a Curve pool and receive Curve LP tokens. Liquidity providers receive 0.02% of trading fees currently and are also incentivized with CRV token.

The Dai stablecoin is a decentralized, unbiased, collateral-backed cryptocurrency soft-pegged to the US Dollar. Dai is held in cryptocurrency wallets or within platforms, and is supported on Ethereum and other popular blockchains.

Dai is easy to generate, access, and use. Users generate Dai by depositing collateral assets into Maker Vaults within the Maker Protocol. This is how Dai is entered into circulation and how users gain access to liquidity. Others obtain Dai by buying it from brokers or exchanges, or simply by receiving it as a means of payment.

From https://makerdao.com/en/whitepaper.

dYdX is a decentralized trading platform that currently supports margin trading, spot trading, lending, and borrowing. dYdX runs on smart contracts on the Ethereum blockchain, and allows users to trade with no intermediaries.

From https://docs.dydx.exchange/

Buying information has traditionally been difficult because you can only judge its quality once you have paid for and received it. This has meant only buying information from trusted sources with a good reputation. This excludes the long tail of people around the world who have valuable insights but no way to be believed.

Now imagine if information sources staked their offering: a buyer can then punish the source if they do not like what was delivered. Like this, information can be trusted from the individuals who do not have track records or wish to stay anonymous. Erasure is being used for this right now:

Numerai: a hedge fund that trades equities based on an aggregation of thousands of predictions made by a global network of competing data scientists. Because each user stakes on their predictions and inaccurate predictions have their stakes destroyed, Numerai can gauge the confidence of the anonymous competitors.

Erasure Bay: a new marketplace for sourcing any kind of information. Make requests for information like predictions, secrets, whistleblowers, recommendations and require that fulfillers place a stake. Try it today.

Numerai Signals: an ongoing tournament to gather Russell 3000 stock predictions, currently in beta. All predictions are staked, and are burned according to accuracy. Rewards paid are proportional to the stake.

From https://erasure.world/

Gnosis builds new market mechanisms for open finance. By designing fairer marketplaces with open-source building blocks, Gnosis is committed to supporting an accessible, equitable future for decentralized finance. Our three interoperable product lines allow you to securely create, trade, and hold crypto assets.

Create: Conditional tokens are an application-agnostic asset class designed for the creation of highly liquid prediction markets. This new type of asset uses the open Conditional Tokens Framework to enable combinatorial outcomes for information discovery through prediction markets, laying the foundation for use cases like futarchy, agentless escrow, and milestone-based funding & access rights allocation.

Trade: Gnosis Protocol is a fully permissionless DEX that prevents front-running, maximizes liquidity through ring trades, and facilitates captial-efficient programmable orders on a customizable price range with batch auctions and custom market makers.

Hold: Gnosis Safe Multisig is the trustless interface for Safe Apps, dApp modules that decode contract interaction into human-readable information for digital asset management on Ethereum. Safe Apps ensure security and persistence through IPFS hosting, and most are open-source and auditable.

From https://gnosis.io/

Whether it’s individuals, companies or institutions – the HOPR protocol provides full control over privacy, data and metadata. HOPR lays the groundwork for a more sovereign and safe internet. For everyone. The HOPR protocol provides network-level and metadata privacy for every kind of data exchange.

PRIVACY: The HOPR protocol provides an alternative infrastructure on top of the Internet that makes metadata surveillance impossible. The HOPR protocol is a layer-0 privacy foundation for anyone to build on. A mixnet protects the identity of both sender and recipent by routing data via multiple intermediate relay hops that mix traffic.

INCENTIVIZED: The HOPR token helps this network be fnancially self-sustaining by providing a means of payment for users and a revenue opportunity for anyone who wants to run a HOPR node. Relay mix nodes are rewarded for their work in HOPR tokens. Our proof-of-relay mechanism protects everyone from dishonest behaviour.

PARTICIPATION: The HOPR community fights for the digital privacy of the future. Everybody can become a part of our movement and work with us towards improving the digital society of tomorrow. HOPR token provides the basis for participation in the HOPR Association, the independent DAO governing HOPR and run by its users.

From https://hoprnet.org/

A keep stores your data and protects it from censorship, so what you store always stays yours.

tBTC lets Bitcoin holders deposit and redeem BTC in DeFi without centralized intermediaries.

From https://keep.network/.

Seamless Token Swaps, Anywhere

Kyber is a blockchain-based liquidity protocol that aggregates liquidity from a wide range of reserves, powering instant and secure token exchange in any decentralized application.

Kyber Network Crystal (KNC)

KNC is an ERC-20 utility token and an integral part of Kyber Network. KNC is the glue that connects different stakeholders in Kyber's ecosystem.

From https://kyber.network

Liquity is a decentralized borrowing protocol that allows you to draw 0% interest loans against Ether used as collateral. Loans are paid out in LUSD - a USD pegged stablecoin, and need to maintain a minimum collateral ratio of only 110%.

In addition to the collateral, the loans are secured by a Stability Pool containing LUSD and by fellow borrowers collectively acting as guarantors of last resort.

Liquity protocol is non-custodial, immutable and governance-free.

From https://www.liquity.org/.

Loopring is a zkRollup Exchange and Payment Protocol.

Secure: Loopring is an open-sourced, audited, and non-custodial exchange protocol, which means nobody in the Loopring ecosystem needs to trust others. Cryptoassets are always under users' own control, with 100% Ethereum-level security guarantees.

High Throughput: Loopring powers highly scalable decentralized exchanges by batch-processing thousands of requests off-chain, with verifiably correct execution via ZKPs. The performance of underlying blockchains is no longer the bottleneck.

Low Cost: Loopring performs most operations, including order-matching and trade settlement, off the Ethereum blockchain. Such a design dramatically reduces gas consumption and thus overall settlement cost to only fractions of a cent.

From https://loopring.org.

The Maker Protocol, also known as the Multi-Collateral Dai (MCD) system, allows users to generate Dai by leveraging collateral assets approved by "Maker Governance." Maker Governance is the community organized and operated process of managing the various aspects of the Maker Protocol.

Dai is a decentralized, unbiased, collateral-backed cryptocurrency soft-pegged to the US Dollar. Resistant to hyperinflation due to its low volatility, Dai offers economic freedom and opportunity to anyone, anywhere.

From https://makerdao.com.

Matcha is a crypto trading platform powered by 0x Labs.

We are a decentralized exchange meaning that users swap their tokens peer-to-peer through the Ethereum smart contract infrastructure. We provide you with the best prices while allowing you to retain complete custody of your tokens throughout the entire trading process.

From http://help.matcha.xyz/.

PEPEMON.finance The Degentralized Platform.

PEPEMON.finance is a digital collectible card game on Blockchain. Powered by DeFi and using NFTs as in-game assets.

RAI is a non pegged, ETH backed stable asset. It is useful as more "stable" collateral for other DeFi protocols (compared to ETH or BTC) or as a stable asset with an embedded interest rate.

From https://docs.reflexer.finance/.

Ruler Protocol is the first market-driven lending platform with non-liquidatable loans

MARKET PRICED No bonding curve to determine interest rates, instead rates are decided by market demand and supply.

NO LIQUIDATIONS With Ruler, as long as you follow the rules, you will never have to worry about health factors or having your position liquidated.

FUNGIBLE LOANS Obtain ERC-20 loans for the time period you need. Trade your debt sheet anytime.

DECENTRALIZED Ruler Protocol's smart contracts will be deployed, and verified on the Ethereum blockchain, making lending and borrowing entirely censorship resistant and open.

LIMITLESS Ruler Protocol will allow you to lend out any asset. Those looking to borrow an asset are able to, as long as there are people willing to lend it out.

NO KYC REQUIRED Ruler Protocol allows you to lend and borrow without needing to give up your identity.

Censorship Resistant Data Feeds

Tellor is a permissionless community of token holders, data providers, and validators working together as a decentralized oracle.

Tellor Tributes (TRB)

TRB is an ERC-20 token and an integral part of Tellor Network. TRB is the glue that connects and incentivizes different stakeholders in Tellor's ecosystem.

From https://www.tellor.io

Tokenlon is a decentralized exchange and payment settlement protocol based on blockchain technology.

Tokenlon 4.0 is based on an improved off-chain Request for Quotation (RFQ) architecture built on the 0x DEX protocol. With on-chain settlement, Tokenlon provides users with a trading experience that does not require trust, has neither slippage, nor front running. Since its launch in July 2019, Tokenlon 4.0 has 120,000 users that traded a total volume of over $4B. Thanks to its design, the on-chain settlement success rate is 99.6%, far ahead of other DEX protocols.

From https://tokenlon.im/files/Tokenlon-litepaper_en-us.pdf

Tornado improves transaction privacy by breaking the on-chain link between recipient and destination addresses. It uses a smart contract that accepts ETH deposits that can be withdrawn by a different address. Whenever ETH is withdrawn by the new address, there is no way to link the withdrawal to the deposit, ensuring complete privacy.

In this way, Tornado.cash acts as a proxy to ensure that the transaction is 100% anonymous with zkSnarks proofs.

From https://medium.com/@tornado.cash/introducing-private-transactions-on-ethereum-now-42ee915babe0

Uniswap is a fully decentralized protocol for automated liquidity provision on Ethereum.

A simple formalized equation drives unstoppable liquidity for thousands of users and hundreds of applications.

Uniswap empowers developers, liquidity providers and traders to participate in a financial marketplace that is open and accessible to all.

From https://uniswap.org/.

Unit protocol is a decentralized borrowing protocol that allows using a variety of tokens as collateral.

• Minting stablecoin USDP based on various tokens value
• Stable interest rate and zero issuance fee
• Flexible oracles selection
• Liquidation liquidity pool

From https://unit.xyz/.

DeFi made simple. yearn.finance is a decentralized investment aggregator that leverages composability and uses automated strategies to earn high yield on crypto assets.