1. The first released version of a software application, typically for testing purposes before the beta version, with limited features and potential bugs
The company released an alpha version of their new app for early adopters to test.
A empresa lançou uma versão alfa do seu novo aplicativo para que os primeiros adotantes testassem.
2. An early stage prototype or experimental release that may have significant limitations and instability
This is still an alpha version, so don't expect full stability.
Esta é ainda uma versão alfa, portanto não espere estabilidade total.