https://pastpapers.papacambridge.com/papers/ib/ib-past-papers-subject

Pros: Past papers from 1991-2019

Cons: No  topic specific questions and papers might be in different years then what was mentioned

https://pestle-ib.firebaseapp.com/chemistry/topic/7/question/11M.1.sl.TZ2.18

Pros: Shows you what questions you have done and what you would like to revisit + topic specific

Cons: It got taken down before. It has been revived but its existence is uncertain in the future. Would highly recommend using it as much as possible before it is taken down again. That's how good it is

https://revisiondojo.com/

Pro: By signing in you can track your progress in how many  questions you have done like pestle +, you can take notes, neat format, etc

Con: No Topic specific questions for IB yet as of (Oct 22, 2022)

https://ib.revisiondojo.com/subjects (Upgraded version)