Plugin Alliance is giving away their Ampeg SVT-VR Classic plugin for free until February 19th. Use the code AMPEG-FOR-FREE to get it from their website.
If you're unfamiliar with the Ampeg SVT and it's various incarnations, it's probably the most-used bass amplifier of all time. If you look at live performances of all sorts of genres you'll probably find the bass player using an Ampeg amp, and more often than not it will be an SVT variant. Just like this video here:
Voctro Labs (Bruno, Clara, Maika) are launching a new software called Cantāmus - 15% off until December 1st with code LAUNCH!
Looks like it’s largely for choral settings, but it still looks pretty cool, and it does use their program Voiceful for its base functions. So if you’ve got a choral piece in Spanish, you just might hear Bruno or Maika singing it back!
Arturia is doing a givaway on their hybrid string sample/synth library, Augmented Strings Intro until the end of the month. (Currently downloading it to try, at their software updater's glacial speed...)
Plugin Boutique is having a sale on XLN Audio products--up to 40% off until July 31. They make a number of things that I think are regarded as relatively popular. I personally really like their XO drum machine.
You can try out at least some of their products for free, I think from both PB or XLN's website, too!