Throughout this page, it is indicated which wallets have open-sourced their code. Open source code is generally scrutinized by many people, meaning that bugs and security issues are more likely to be found and fixed.
Disclaimer: Defly, Ledger Nano, Exodus and Lute are third-party services. The Algorand Foundation has no control over these external services and makes no guarantees regarding their functionality, security, or reliability. Please exercise caution when accessing these sites and products, and ensure that you understand the associated risks. Pera Wallet is owned by the Algorand Foundation.