NEO is much more than a Chinese Ethereum…
- Faster transactions
- Delegated Byzantine Fault Tolerance…as consensus
- Safe from Quantum computers…
- Multi-language support for Smart-Contracts (Solidity, Java, C, Python)
- NEP5 Tokens (like ERC20 Ethereum Tokens)
- Owners of NEO get paid in the form of GAS tokens (like a dividend)
And… now with NeoLink browser interface (something like MetaMask for Ethereum)
You can try and Download for Google Chrome browser here.
About the Smart-Contract development documentation, you can find here.