From NCH Software:
RecordPad Sound Recording Software is a free and simple recording software for Windows. RecordPad is ideal for recording audio for use in digital presentations and projects. The size of the installation is small and downloads quickly. You can use RecordPad Pro to record sound, voice, music or any other audio type. Recording audio on your computer has never been easier. Easily use the software to record audio notes, messages, announcements in WAV or MP3 files.
I've been using RecordPad for years, and I love it. It's lightweight and simple, but offers pretty much everything you need from a simple recorder. Plus, you don't have to worry about other programs like Audacity crashing (is that even a thing anymore?) or taking up more power from your computer. Very nice, and I'd recommend it to anyone!
Hmm... Really, the only "downside" to this program is that you can't do fancy stuff like record multiple devices at once, or something like that. But I don't think that's an issue.
Wanna thank NintendoCapriSun (Timothy Bishop) for the recommendation. I use this all the time!