Changelly
Changelly is an instant crypto swap and on-ramp that aggregates exchange rates from 20+ providers and lets users trade 1,000+ assets without an account.
What is Changelly?
Changelly aggregates exchange rates from 20+ centralized and decentralized platforms so users can swap 1,000+ cryptocurrencies in a single flow. Swaps are non-custodial: assets go straight to the user's wallet, and fiat purchases are routed through partner on-ramps like MoonPay and Simplex. Changelly PRO adds an order-book trading interface, and Changelly PAY supports merchant checkout. The service reports 2.6M+ monthly users since 2015.
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Developer resources from Alchemy
A guide to web3 authentication
Learn web3 authentication basics and how to build modern flows onchain with email and social login.
How to build an AI trading bot: a complete developer's guide (2026)
A step-by-step technical guide to building a sentiment-enhanced crypto trading bot with on-chain data, machine learning, and risk management using Alchemy's blockchain APIs.
How Slingshot built cross-chain trading with Webhooks
Slingshot 2.0 supports instant trading of over 300K tokens across Solana, Ethereum, and various L2s. What sets them apart? Users can trade any token across any chain without worrying about bridging or gas fees - all powered by Alchemy Webooks.
Changelly alternatives
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OKX
Bybit
Luno
Bity (Bitybank)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.
