Free Mac programs that help to clean your mac

Coming from the Linux and a bit of windows world I was missing some programs to keep the mac up and running smoothly.
After hours of research I finally found two helpful programs that are for free.
One is called Onyx (found here), it is a multifunctional utility to very your startup disk, do maintenance and many other useful tasks. Best thing it is not just free to download, nope it cost really nothing to even use. No nagging, no popups nothing just a real good utility program to keep the mac smoothly running.
Give it a try.
The second one is call Magican and can be downloaded here.
Let it run in the background and it can free up your ram with a click of the mouse, it monitors the temperature of your cpu and gpu and many other details can be displayed. I find it great do uninstall programs as it looks up even for the folders that normally just stay as fragmented junk on your mac.
These 2 tools keep my older macbook running smooth and free up lots of space through cleanup of caches and other leftovers on my mac. Give them a try and visit their websites (just click the links above), hope this can help you as it does for me.