Sources are the tools or platforms from which you can send event data to RudderStack. These events can then be routed (with or without transformation) into your data warehouse or third-party destinations for analytics and other activation use-cases.
RudderStack's Event Streams allow you to collect your event data from all of your sites and applications and route it to a wide array of customer tools and data warehouses via RudderStack.
Here's a quick 2-minute walkthrough of this feature:
This section contains links to some of the popular Event Stream sources:
If you wish to contribute to developing more Event Streams for RudderStack, please refer to the contributing guide here.