The TON (Telegram Open Network) ecosystem is a blockchain-based digital project initially designed to extend the capabilities of the popular messaging app Telegram, although it is now independently operated. It was created by the Durov brothers, Nikolai and Pavel Durov, who are also the founders of Telegram. The primary goal of TON was to facilitate fast, secure, and scalable transactions across a decentralized network.

Key features of the TON ecosystem include:

1. **Blockchain Infrastructure:** TON is built on a multi-blockchain architecture, known as TON Blockchain, designed to handle millions of transactions per second. It uses a proof-of-stake consensus mechanism, which is more energy-efficient than the proof-of-work system used by networks like Bitcoin.

2. **TON Coin (previously Grams):** This is the native cryptocurrency of the TON ecosystem. It is intended to be used for transaction fees, staking, and other services within the network.

3. **Decentralized Applications (DApps):** The TON platform supports the development and operation of decentralized applications. This opens the door for a wide range of uses from decentralized finance (DeFi) to social media apps, all running on the TON infrastructure.

4. **TON Storage:** A decentralized file-storage system that allows users to store files securely and share them without relying on centralized third parties.

5. **TON Proxy:** This feature includes VPN services and anonymization layers that help users maintain privacy and bypass internet censorship.

6. **TON DNS:** A service to provide human-readable names for accounts, smart contracts services, and network nodes. With TON DNS, accessing decentralized services becomes as easy as browsing the web.

In 2020, Telegram officially halted its involvement with TON after a legal battle with the US Securities and Exchange Commission (SEC) regarding the launch of its cryptocurrency. However, the open-source community took over the project, continuing its development and maintenance. The TON ecosystem has evolved under the guidance of its community and developers, expanding its features and usability across various applications.