The ease of use for our customers when using instant alliance was one thing that stood out most in my mind while working with them! They were very easy going people who made sure we understood what they wanted from us at all times during implementation time! Honestly this software has been great so far but I'm not too fond about some features like how you can't have multiple email addresses or different passwords saved as well (which would be nice).
So if your looking into an open source solution then go ahead give these guys a try because their support team will help guide through any issues/questions quickly & efficiently! We are solving problems by providing secure access control solutions across various industries including Financial Services / Banking sector - Retail banking / Insurance companies etc.