FINRA.org - Financial industry regulatory authority ( Applications: Broker Check, Fund Analyzer, File a complaint, and Lots of investing related tools) Economic events calendar -
FDA calendar @BioPharmCatalyst
Some of the super investor portfolio websites like Dataroma.com provide insider transactions
Annual Returns on Stock, T.Bonds, and T.Bills: 1928 to Current by Aswath Damodaran
Federal reserve related
Fed statement tracker by WSJ
The Big Mac Index: Interactive currency comparison tool base on purchasing power parity.