GitHub is a great source for 4D resources; there are multiple official Github organizations that 4D developers may want to follow:

https://github.com/4d
- The original github org, containing lots of resources including component source code, documentation, and even some older components that have been phased out.

https://github.com/4d-depot
- The new github org, containing lots of ready to use exampls and How Do I databases, this is the new location

If you are not already following both of these pages on GitHub, please consider doing so - this will ensure that you are notified as new resources are added.

---

Pro tip: Use this search query to quickly locate all of the example applications:
https://github.com/search?q=topic%3A4d-example-application+org%3A4d-depot