
Polkadot
Polkadot is a sharded protocol that enables blockchain networks to operate together seamlessly.

What is Polkadot?
Polkadot is a decentralized protocol that enables unrelated blockchains to securely communicate with one another, for example, enabling value or data to flow between Ethereum and Bitcoin blockchains without the need for an intermediary. Polkadot is also a token that can be bought and sold on exchanges like Coinbase or Binance. It's also intended to be fast and scalable, thanks to the use of numerous parallel blockchains offloading processing demands.
Web3 dapps and developer tools related to Polkadot
Discover blockchain applications that are frequently used with Polkadot.
Developer resources from Alchemy

What is Arc? The economic OS for the internet, explained for developers
Arc is Circle's open, EVM-compatible Layer-1 for stablecoin finance. This guide covers USDC gas, deterministic finality, and what can break when you port a contract.

How we fine tune our RPC for speed and reliability
We moved compression for large RPC responses to a better layer in our serving path, cutting P95 latency on heavy calls and reducing connection churn.

How Goldsky kept transactions flowing with zero downtime
Goldsky migrated its Compose bundler and paymaster to Alchemy and built a provider abstraction layer that makes failover a single environment variable change—no code deploy, no downtime.
Polkadot alternatives
Explore web3 competitors and apps like Polkadot.
App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

