Anwida Soft has announced that its Filter plugin will be free to download for the next few weeks.
The Filter plugin is a resonant low/high pass filter with controllable Q factor and resonant frequency. This last parameter can be modulated by the internal LFO.
Part of the MODULA Suite collection, Filter is regularly sold for $12 USD. It comes in VST3 and AU plugin formats for Windows and Mac.
More information: Anwida Soft