Free alternatives to Rietveld?

[Simon Albrecht]

Hello everybody,

just now I tried to login with Google in order to close my two recent 
Rietveld reviews. However, Google decided that despite entering a 
verification code from e-mail it couldn’t confirm me being authorised to 
login. So I’m currently out. Maybe they want to force me to give a 
mobile phone number?

Whatever the reason for this weirdness, I think it would really be 
better if we had a code review tool which didn’t rely on external login 
providers. Is there really no free alternative?

Best, Simon