Nebulas describes itself as an autonomous metanet, which focuses on on-chain data, interactions, and collaboration. Its hyper-mapped structural metadata can reportedly handle increasingly complex on-chain data and describe these interactions. On 15 April 2019, the team released Nebulas NOVA, a blockchain network with native on-chain incentive. After Nebulas NOVA goes live, developers and users will be able to participate in the development of the Nebulas ecosystem to realize its vision  - let everyone benefit fairly from decentralized collaboration. To facilitate ecosystem development, asset management, and promote the “autonomous metanet”, the founding team of Nebulas will form the “Nebulas Community Group” together with the community. The Nebulas Community Group comprises 3 organizations - Nebulas Council, Nebulas Foundation, and Nebulas Technical Committee. These organizations will supervise each other and support the sustainable development of Nebulas.

Nebulas

WaykiChain

GoChain

aelf

HyperCash

Wanchain is a distributed ledger that allows for cross-chain transactions and the interoperability of multiple chains. Although Wanchain facilitates transactions between blockchains, it is also a stand-alone blockchain that runs autonomously. The protocol acts as a distributed ledger that processes and maintains records of cross-chain transactions.

Transactions on Wanchain do not only occur between different public blockchains but between private chains as well. As an Ethereum (ETH) fork, Wanchain enjoys some of the properties of the Ethereum blockchain. The protocol securely and autonomously processes applications via smart contracts.  The use cases for Wanchain include decentralized exchanges (DEXs), lending and borrowing platforms, stablecoins, crowdfunding, multi-currency payments and settlements.

The platform is totally decentralized and requires no custodian party to manage or confirm transactions. Unlike other cross-chain systems, Wanchain does not rely on a third-party platform to authenticate transactions. The locked account mechanism is used to secure and manage accounts on the network, eliminating third-party interferences.

Wanchain

Komodo

High Performance Blockchain is the first permissionless public blockchain to innovate with hardware acceleration and provably random numbers:

acceleration delivers fast, ultra low-fee, on-chain transactions

provably random numbers support 100% fairness

HPB (the coin) is used to pay transaction gas fees and to reward node operators.

Hyperblox

Hifi (formerly Mainframe) is a Lending Protocol that allows anyone to borrow against their crypto. Hifi uses a bond-like instrument, representing an on-chain obligation that settles on a specific future date. Buying and selling the tokenized debt enables fixed-rate, fixed term lending and borrowing — something much needed in decentralized finance today. It is anticipated that a ticker symbol change will occur alongside future iterations on the Hifi Lending Protocol.

Mainframe Token (MFT) is the native utility token that is used for:

Governance votes

Staking to ensure the safety of the protocol

Rewarding contributors to the ecosystem

What can you do with the Hifi Lending Protocol:

Borrow:  Lock collateral in a vault to mint fixed-rate, fixed-term debt tokens.  These debt tokens can be swapped for instant liquidity allowing users to leverage long, yield farm, or pursue other strategic trades without selling their collateral tokens.

Lend:  Buy fixed-rate, fixed-term debt tokens for a discount.  When the term expires they can be redeemed for face value, earning lenders a predictable return on their investment.

Provide Liquidity:  Earn trading fees by providing liquidity between debt tokens and stablecoins on an Automated Market Maker (AMM).

Mainframe

NULS

QuarkChain

FIO Protocol

PERL.eco

Vite has built a Directed Acyclic Graph (DAG) based smart-contract platform, with a Snapshot Chain structure to facilitate zero-fee transactions and optimize transaction speed, reliability, and security. The Snapshot Chain of Vite utilizes Hierarchical Delegated Proof of Stake (“HDPoS”) to achieve network consensus, while supernodes take only staking rewards and no transaction fees. Vite virtual machine maintains compatibility with EVM, and utilizes asynchronous smart contract language, Solidity++.

The VITE token is the currency for simple token transactions and smart-contract executions on the Vite network, with users staking VITE for transaction quota instead of consuming gas. VITE can also be used to vote for Snapshot Block Producers (aka supernodes). In addition, a VITE staker with unused transaction quota can lease such quota to dApps in exchange for their tokens. For instance, users can stake VITE in exchange of ViteX’s native decentralized exchange token, VX.

Vite’s current products include a decentralized exchange (ViteX), a multi-purpose wallet application (Vite App), payments (VitePay), and government/enterprise blockchain applications (VitePlus):

ViteX is a decentralized exchange with on-chain orderbook and matching engine, and supports currently 20+ digital assets.

Vite App is a mobile application that allows trading (ViteX), asset management (wallet), dapps (e.g Vite-based games) in one place.

VitePay is a fast and feeless payment solution, currently available to use in Singapore’s Ce La Vi Sky Bar and taxi services under the Midwest Global network - Users can pay for merchants with Vite wallet, who in turn receive payment with zero fees with near-instant settlement. VitePay is also integrated with the e-commerce platform OpenCart, and one can utilize VitePay at the official Vite store.

VitePlus is a Vite-based enterprise blockchain solution for governments and enterprises. Vite has developed a pilot app, SyraCoin, for the Syracuse government, allowing city housing fund donors to receive blockchain-based coupons that are redeemable for goods and services within city bounds.

VITE

Apps use ICON to operate cross-chain seamlessly, build momentum and gain reputation. ICON's Cross-Chain Framework simplifies cross-chain development with its easy-to-use xCall messaging standard and connections to secure bridging protocols.