# Features

- [Buy and Sell Orders](/otsea/features/buy-and-sell-orders.md)
- [Crowd-Fill Sales](/otsea/features/crowd-fill-sales.md)
- [Unlisted Orders](/otsea/features/unlisted-orders.md)
- [Arb Bot Protection](/otsea/features/arb-bot-protection.md)
- [Auto-Match](/otsea/features/auto-match.md)
- [Multi-Chain](/otsea/features/multi-chain.md)