PowerAuth - Open-source solution for authentication, secure data storage and transport security in mobile banking.

PowerAuth Server component is the back-end counterpart of PowerAuth Mobile SDK that holds device registrations and verifies MFA signatures.

Convert between json and hex representations of transactions and ledger entries on the XRP Ledger. Moved to: https://github.com/XRPLF/xrpl.js/tree/develop/packages/ripple-binary-codec

Monero wallet Trezor integration documentation

ProCrypt is a small, simple, and ultrafast library for managing crypto wallets, built on Web Standards for Deno.

PHP implementation of PulseProof Sentinel Protocol (PPS): time-bound asymmetric authentication proofs for offline, OTP-style, transaction-signing, duress-aware, and multi-device flows.

Secure and convenient transaction signing for the stellar network.

Payshares Payments is a Node JS library providing robust transaction submission to the Payshares network

Sign EVM and TRON transactions from the CLI, TypeScript, or Go using your own browser wallet (MetaMask, Rabby, TronLink) — the private key never leaves the browser

PulseProof Sentinel Protocol (PPS) — asymmetric time-bound authentication proofs for offline, OTP-style, transaction-signing, duress-aware, and multi-device flows.

Laravel integration for PulseProof Sentinel Protocol (PPS): PPS authentication routes, facade, config, storage, transaction signing, and silent duress support.

Go CLI + REST gateway for multi-chain transaction signing (EVM & Cosmos) backed by HashiCorp Vault. Custom secp256k1 plugin signs pre-hashed bytes — private key material never leaves Vault. Supports EIP-155, EIP-712, and Cosmos SIGN_MODE_DIRECT / AMINO_JSON.

Go SDK for offline BSC transaction building, signing, nonce management, and multi-relay submission.

ICONex Wallet is a desktop wallet for the ICON blockchain with a clean GUI. It lets you create or import wallets, manage addresses and balances, send and receive assets, and securely sign transactions. It runs on Windows, macOS, and Linux, and supports hardware wallets like Ledger and Trezor.

Secure HashiCorp Vault plugin for Ethereum and Bitcoin wallet management and transaction signing, built in Go with an extensible adapter architecture.

PowerAuth based Mobile Token SDK for Android

A fully custom-built Ethereum wallet. Features wallet creation/import, raw transaction handling, BIP-39 mnemonic generation, secure storage, and seamless network switching. Built with React, Material UI, Ethereumjs-util, and Alchemy-powered nodes, supporting multiple Ethereum and Polygon networks.

PowerAuth based Mobile Token SDK for iOS

Minimal offline Bitcoin transaction signer for cold storage

🐙 iOS Web3 Wallet Framework for integrating Ethereum and major networks in Swift apps. Easy wallet connect and onboarding for mobile dApps.