SharePoint Password Change & Reset Pack provides users a convenient way to manage their password.

Password Change
SharePoint Password Change & Expiration 3.0 considerably alleviates IT administrator workload while ensuring the access security simultaneously. It contains two Web Parts: SharePoint Password Change Web Part and SharePoint Password Expiration Warning Web Part.
The SharePoint Password Change Web Part allows AD users, Local NT or Forms-Authenticated users to change their own passwords without administrator intervention.
The SharePoint Password Expiration Warning Web Part can prompt users to change passwords proactively through sending them expiry notification emails beforehand and providing a URL to redirect users to the password change page.

Password Reset
This simple web part can be added on any web page for easy access.