I tried to download siteminder trial version based on THIS LINK.But while googling somewhere it says siteminder is not free even for development like Oracle(Express Edition).Please clarify my doubt about this.If trial version is available please direct to me there.Thanks in advance.
CA Single Sign On (formerly CA SiteMinder) has a "demo" mode where no license is required. However, I believe there is no "free" usage of CA SSO available for development (or at least there hasn't been in the past). You must either get it through your CA Account Exec or have a valid login to the CA Support portal.