Each section is an architectural sketch. The linked comparison covers custody, chain support, signing authority, sponsorship, and recovery — including when the other product is the better choice.
Cavos
Cavos embeds a wallet in the application and removes the extension requirement. Signing authority is a non-exportable device key: Cavos holds no key that can move user funds and does not reconstruct a master key with MPC.
One SDK ships chain-native adapters for Starknet, Solana, and Stellar. It is not a drop-in replacement for Privy — the two products target different chain ecosystems.
Choose Cavos when you are building on those three chains and want each chain’s native account model, or when a security review requires that no provider-side key material can reconstruct a signing key.
Cavos vs Privy →
Dynamic
Dynamic provides wallet connection, embedded wallets, and authentication tooling with a strong emphasis on multi-wallet login experiences and developer-facing configuration.
It is strongest as a unified login and wallet-connection layer covering many wallets and chains. Embedded wallet keys are managed by the provider’s key infrastructure with configurable custody models.
Choose Dynamic when you need to support many external wallets alongside embedded ones, or when users already hold wallets you must connect to.
Cavos vs Dynamic →
Turnkey
Turnkey provides secure key management infrastructure running in hardware-backed secure enclaves, exposed as a low-level API for building wallets and signing systems.
It sits at a different layer than an embedded wallet product: you assemble the wallet experience on top of policy-driven signing primitives. Keys live in remote enclaves, not on the end user’s device.
Choose Turnkey when you are building your own wallet or custody product, or when you need server-side signing and organizational policy over keys.
Cavos vs Turnkey →
Web3Auth
Web3Auth provides social-login wallets using multi-party computation, splitting key shares across the user’s device, the provider’s network, and recovery factors.
That reconstructs a private key from distributed shares. MPC is a legitimate design; the difference is the trust surface — the provider network holds a share used in reconstruction, and export is supported.
Choose Web3Auth when you need very broad chain coverage from a single social-login wallet layer, or a key you can export and use in other tooling.
Cavos vs Web3Auth →
Magic
Magic offers embedded wallets and passwordless authentication, historically known for email magic-link login and a delegated key management model backed by hardware security modules.
It pioneered invisible wallet onboarding and remains a strong choice for simple, email-first flows on EVM chains. Signing is delegated to provider-operated infrastructure rather than a device-bound key.
Choose Magic when you want the simplest possible email-link onboarding on EVM, or a mature provider for a straightforward wallet requirement.
Cavos vs Magic →