Thirdweb

Thirdweb is a full-stack Web3 development platform with embedded wallets, a Universal Bridge for cross-chain and fiat checkout, RPC nodes and a server component called Thirdweb Engine. It was founded in 2021 and is based in San Francisco.

Products The listed items are In-App Wallets, Universal Bridge (pay with any token or fiat on any chain) and Engine, a self-hosted backend wallet server. The company describes Engine as a ready Docker server with queues, retries and KMS-held keys, suited to mass payouts and minting.

Customers and coverage Target clients are gaming, consumer apps, e-commerce, DeFi and marketplaces. Thirdweb states support for 2,000+ EVM blockchains.

Pricing Plans are Freemium, Starter and Pro; the figures are not stated here.

For a product that needs to pay out or mint at volume, the useful property of a self-hosted engine is that the signing keys stay in the operator's own infrastructure, while queueing and retries are handled by software that is already built.