Stellar SDKs & Developer Tools

Latch

Latch provides open-source C-address onboarding infrastructure for Stellar, enabling users to create and fund Soroban Smart Accounts without ever touching a traditional G-address. Built on OpenZeppelin's Smart Account standard, it delivers three components: Latch Bridge (a proxy contract and relay service that routes funds from direct sends, CEX withdrawals, and fiat on-ramps to the user's C-address automatically), Latch Wallet (a production-grade C-address reference wallet at feature parity with Freighter, including token display, transaction history, signer management, and policy controls), and Latch SDK (TypeScript and Rust libraries for wallet developers to add C-address support instantly, with cross-ecosystem sign-in from MetaMask, Phantom, and Rabby via OpenZeppelin verifier contracts).

KMP Stellar SDK

Kotlin Multiplatform SDK for Stellar (kmp-stellar-sdk by Soneso), listed as a client SDK on developers.stellar.org/docs/tools/sdks. Write your Stellar integration once in Kotlin and deploy across JVM (Android, server), iOS, macOS and Web. A client library to build and sign transactions, query Horizon, and call the Stellar RPC for Soroban smart contracts.

The Aha Company

Smart Account Onboarding is an open-source reference implementation and onboarding standard that removes the primary adoption friction for Soroban smart accounts: funding a C-address without forcing end-users to first create and manage a traditional G-address. The project delivers: a G→C seamless funding bridge (supporting inbound funding from existing G-addresses, CEX withdrawals, and optional off-ramp rails), making the “G-address step” transparent or unnecessary for the user, a production-grade reference C-address wallet (web + mobile) with token holdings and transfer history at parity with Freighter, a reusable Onboarding Kit (UI + SDK) that wallet providers can embed to standardize the “create C-address → fund fees → add assets → bridge funds” journey across the ecosystem. Implementation aligns with the OpenZeppelin Smart Account standard, using its smart-account primitives (policies/signers/verifiers) to support modern auth patterns and extensibility.