Let us assume that we want to manually manage users in SharePoint, deployed in standalone mode without domain integration…

Below are a few links collected during a short bit of research. I have not tested them yet.

SharePoint 2010 FBA Pack
https://sharepoint2010fba.codeplex.com/

SharePoint 2013 FBA Pack
http://sharepoint2013fba.codeplex.com/

Also useful:

• Community Kit for SharePoint (http://cks.codeplex.com/)
• SharePoint Account Provision (http://spaccountprovision.codeplex.com/)
• Change password for FBA-ADAM SP 2007 (http://fbaadam.codeplex.com/)
• Allow users to change their password from SharePoint 2013 (http://changepasswordfromsharepoint2013.codeplex.com/)