Most of the music at Scorser is dated, but that's fine. I prefer the older pieces -- Beethoven, Bach, Chopin, Schumann, Schubert, Debussy, Ravel, all the classical composers. Scores can be downloaded for piano, as well as ensembles of various instruments.
The other site, free-scores (be sure to include the hyphen), has a lot of classical composers as well as modern composers who are hoping to make a name for themselves. First you will see a selection of instruments. I click on "piano." Then you will see various types of music: ragtime, new age, waltzes. Click on the type of music you are interested in. The score will appear on your screen and then you can print it. You can also hear much of the music before you print, if you desire. Even links to some YouTube videos are available.