Hard to tell what it is you are looking for, equity data, macro data, legal data?
A lot if it is public and you basically just need to search the official websites (SEC,FRED, IMF, ECB, CDC...). For US-equities some websites have lots of financial data built-in, check www.koyfin.com4 and Tikr (Referral link; https://app.tikr.com/register?ref=q5pfta3).
For alternative data there is https://www.quandl.com/2
Here is a fun AUM tracker; https://aum13f.com/1