I could not succeed in downloading the community edition after filling the required details like name, contact number, email as I get the error message 'Email not valid'. I tried various emails, but of no use.

[desikamani]

I wanted to download the community edition for testing, but could not proceed with download, because of the error message 'Email not valid' which repedteadly comes for any valid email.

[jpotts]

Angel's link is excellent. If you ever need a non-Alfresco alternative the files are on SourceForge.