Wallets & identity: Web3 developer tools

Best for Smart and MPC wallets with email and social login

Chains

Solana Base BNB Chain Arbitrum Polygon Stellar

Price

Free 1,000 Monthly Active Wallets, then $0.025/MAU; custom from $0.02/MAW

License

Proprietary

Wallet API and SDK for users and backends with email and social login, plus onramp and checkout. Self-serve on Solana, Base, BNB Chain, Arbitrum, Polygon and Stellar, each with named mainnet and testnet. First 1,000 monthly active wallets free.

Best for Account-abstraction wallets with gas sponsorship

Chains

Ethereum Solana Base BNB Chain Arbitrum Polygon

Price

Free tier (gas sponsorship testnet only); Pay as You Go $0.525/1M CUs + 8% gas sponsorship admin fee; Enterprise custom

Smart wallets with a bundler, gas sponsorship and embedded sign-in (formerly Account Kit). Covers the major EVM chains we track except Avalanche; on Solana it offers gas sponsorship only. The free tier sponsors gas on testnets only.

Best for ERC-4337 bundler and paymaster infrastructure

Chains

Ethereum Base BNB Chain Avalanche Arbitrum Polygon

Price

Not published on the pages we checked

Bundler and paymaster infrastructure for ERC-4337 smart accounts, plus the permissionless.js library. Its network list names Ethereum, Base, BNB Chain, Avalanche, Arbitrum and Polygon. Pricing wasn't published on the pages we read.

Best for One connect button for Freighter, xBull, Lobstr and more

Chains

Stellar

Price

Free (open source)

License

MIT

One API and connect button for Freighter, xBull, Lobstr, WalletConnect and other Stellar wallets. Free, MIT-licensed and actively maintained.

Best for Algorand wallet connector for React, Vue, Solid and Svelte

Chains

Algorand

Price

Free (open source)

License

MIT

TxnLab's framework-agnostic Algorand wallet connector for Pera, Defly, Lute, WalletConnect and more, with React, Vue, Solid and Svelte adapters. Free, MIT and actively maintained.

Best for Sign-in and transaction signing through the Xaman wallet

Chains

XRP Ledger Xahau^** Docs name the chain but not the network.

Price

Not published on the pages we checked

XRPL Labs' API and SDK for sign requests, sign-in (OAuth2 and OpenID) and xApps that send signing to the Xaman wallet. Its docs name both the XRP Ledger and Xahau as networks; they don't say mainnet for Xahau explicitly. Pricing isn't on the pages we read.