JustSwap

JustSwap was launched in August 2020 by the TRON Foundation as the first automated market maker decentralized exchange on the TRON blockchain. The protocol introduced Uniswap-style constant-product liquidity pools to the TRON ecosystem, enabling permissionless swaps of TRC20 tokens directly from non-custodial wallets like TronLink without registration, KYC, or counterparty trust. Trading fees are set at 0.30% per swap, with the bulk routed to liquidity providers and a portion supporting the JUST DeFi token economy.

In late 2020 the JustSwap protocol was rebranded and absorbed into the broader SUN DeFi suite as SunSwap, with the live trading interface moving to sunswap.com under the SUN.io ecosystem. The underlying liquidity pool model carried over largely intact, and SunSwap has since shipped V2 and V3 versions that added concentrated liquidity, multi-hop routing, and improved capital efficiency. Users searching for JustSwap today are typically directed toward SunSwap, though the original JustSwap branding still surfaces in older TRON guides, wallet integrations, and developer documentation.

The project sits inside the wider JUST DeFi stack on TRON, which includes the JUST governance token, the USDJ collateralized stablecoin, and JustLend lending markets, all of which integrate with SunSwap liquidity pools. Anyone using the protocol today should reach for the current SunSwap interface rather than unofficial clones, verify contract addresses against official TRON documentation, and account for the standard risks of using an AMM, including impermanent loss for liquidity providers and smart-contract risk on top of the underlying volatility of TRC20 tokens.