8 free plugins. Not just one; 8! (well, technically, it’s only 6 since they include the chorus and the flanger as both mono and stereo, but hey… it’s FREE!)
Blue Cat Audio has a bundle of free plugins available for download that include:
Whether or not they will be useful to you is really up to you, but at the price (FREE!) they are definitely worth a try. They are all now in AAX format as well as RTAS, VST, AU and DX.