1/ Solidity made smart contracts accessible to everyone. It became the foundation of the EVM ecosystem. But its early design choices now hold builders back. That’s why we built Sway 🧵

2/ Sway is a Rust-inspired and purpose-built language crafted specifically to make smart contracts safe, simple, and performant from the ground up. But what makes Sway special?

4/ Looks straightforward, right? But there’s a subtle trap: updating storage after transferring assets could open doors to reentrancy attacks ⚠️ 👉 But Sway's compiler actually spots the issue for you. It flags risky interactions early, before you even deploy anything on-chain.

5/ This is very different from Solidity’s approach, which leans on external tools like linters and static analyzers to catch vulnerabilities. With Sway, safety isn’t an afterthought. Dealing with these vulnerabilities is already built into the compiler and core tooling, just like Rust.

6/ Some of these issues can be patched with tooling, but that’s really just treating symptoms instead of fixing the root cause. No matter how good the tools get, you’re still stuck with legacy designs that slow everything down.

7/ Sway has a lot of use cases but some really interesting ones include: 1️⃣ Writing flexible, stateless predicates (validation logic that doesn’t require on-chain deployment) 2️⃣ Running complex off-chain logic without incurring gas fees

8/ All of the above are powerful, but what truly sets Sway apart is that you can go from zero to production-ready quickly. Minimal setup. Fast iteration. Cleaner workflows. This makes Sway not just easier, but actually enjoyable, to build with.

9/ Sway also comes packed with key features you won’t find elsewhere. Take predicates, for example, they handle tx validation without clogging up storage. While traditional smart contracts rely heavily on state, predicates are stateless scripts that verify conditions on their own.

12/ Sway is still young but is quickly maturing, offering a rich dev experience: 📦 Clean, robust package manager 🌐 Rich, community-driven standards 👥 Continuous improvements guided by developers like you Sway delivers a workflow that feels smoother than most blockchain stacks.

13/ Ready to dive into Sway? First, install the Fuel toolchain by running forc. We explain this step-by-step in the article linked at the end of this thread. Prefer experimenting online first? The Sway Playground offers a zero-install experience right in your browser.

15/ Sway is open-source and eager for your input. There are so many ways you can contribute: 🐞 Report issues 🛠️ Submit features 💬 Join community discussions Help shape the future through Sway’s SRC standards. Your voice matters.