1. The earliest stage of software or product development, typically characterized by incomplete features, significant bugs, and limited testing
The new app is still in alpha stage and not ready for public release.
O novo aplicativo ainda está em fase alfa e não está pronto para lançamento público.
2. A developmental phase where core functionality is being tested internally by developers
We're recruiting testers for the alpha stage of our game.
Estamos recrutando testadores para a fase alfa do nosso jogo.