I would even pay for something like this so I hope they keep updating it and add features. This company's website is pretty cool too.
ADSR Sample Manager (FREE)
ADSR Sample Manager aims to help users who own thousands of audio samples and loops, by providing an all-in-one solution for organizing, searching and browsing the indexed sample content. For added convenience, it works as a plugin right inside the DAW, with the ability to preview the samples in the context of your active project. Even better, the user can drag and drop the selected file onto the sequencer without ever leaving the digital audio workstation.
Even though this is the initial version of the ADSR Sample Manager (v1.0.0), the software is already stable and nicely polished. The user interface is clean and modern-looking, with the search bar and tag section on the left, along with the sample list and the waveform preview on the right. The workflow is intuitive and I was able to start using the plugin without watching any tutorials or usage tips.
The software will automatically tag the files after you let it know the location of your sample folder and the auto-tagging process worked quite well. Of course, some of the unlabeled samples (you know, the usual 1.WAV and such) remain untagged, but ADSR Sample Manager did a pretty good job at recognizing and tagging kicks, snares, effects, drones, vocals, and other standard types of sample content. The user can add custom tags to multiple files simultaneously, which is useful if you want to speed up the browsing process even further.
ADSR Sample Manager is available for free download via ADSR Sounds (14.1 MB download size, EXE installer, 32-bit & 64-bit VST/AU plugin format for Windows & MacOS).