Recently, Reverb added 2 new segments: LP and software. Reverb Software is of course, very much in harmony with our world of Logic Pro X and I would encourage you to go take a look at the offerings. Reverb’s software section does have a slew of freebie offerings much like several other sites that curate links or downloads with an additional major bonus that is of particular interest.
I was pleasantly surprised to find an assortment from their huge library of offerings. The content includes very inspiring apple loops, regular wav or aif loops, one-shots, and multi-samples. Many can easily be used for inspiration or as the jumping off point to creating various styles of modern EDM.
Groove From Mars is a comprehensive free collection of midi groove templates from 25 of the world's most legendary drum machines and sequencers. With these grooves, you'll be able to quantize your midi clips with the unique feel that each of these machines has to offer.
Sample Modern released a nice pack of free marching snares samples for Classical, Orchestral, Ambient, Rock/Ballad and other music genres.
From Sample Modern:
Marching Snares pack is designed and created to fit the needs of any music producer and composer, who is searching high-quality snare drum samples for free. The pack comes in 2 formats: WAV and AIFF (Apple Loops). 35 snare drum loops, both solo and ensamble loops are available. The tempo is various, from 110 up to 180 bpm.
You can hear the pack in action in this video:
102Mb download size, 178Mb total size (unrared). Download here.
Note that you'll need a tool like The Unarchiver to unrar the archive.