Soundhack releases Delay Trio, three FREE delay effects. The three plugins are +delay (classic delay effects), +pitchdelay, (essentially the same plugin with controls oriented toward pitch shifting), and finally +bubbler (a granular delay in which grains are pulled from the delay line with randomized start time, delay time and pitch shift value).
All is free.
Here are more Effects, Plugins and Filters.
"This is a group of three plugins that I developed as class demonstrations while teaching computer music and studio technique at UC San Diego. All of these are derived from the same basic delay algorithm" Link