Yes,  the Benefit Eligibility Screening Tool BEST ,can help identify other Social Security programs for which you may be eligible . there is The Employee Benefit Research Institute. Also the Ballpark E$timator, this calculator helps you get a basic idea of how much you need to save before you retire .
anything for help with pensions you don't have anymore and retirement?
If your pension plan was terminated, you may be able to use the PBGC's Find an Unclaimed Pension tool to find out if you have unclaimed benefits.
and what should I have with me when I apply for retirement benefits?