I want to take my RE knowledge to the next level

Hi pirates.

I used to reverse engineer and crack CrackMes and CTF Challenges, and while those are fun and teaches important concepts it's not close enough for real world cracking. I'm looking for softwares to practice on. This will probably help other people so maybe we should make a list. I thought on something like:

1. Easy peasy software to crack (Closet thing to CrackMe but real).
2. Keygen.
3. Dll patching.
4. Manipulating server payloads.
5. Anti-debug bypass.

If you know any softwares that are suitable for this is great. If you have something to add or you think the order should be different then please update me.