Bsaylor is a library of Pure Data objects by Benjamin Saylor:

pvoc~: a phase vocoder based on Pd's 09.pvoc.pd example patch. Advantages over the abstraction include (reportedly) faster execution, instantaneous response to input, and adjustable phase locking. It requires FFTW3.

susloop~: sample player with various loop methods (ping-pong, ... ) like a classic tracker interface.

svf~: a signal-controlled port of Steve Harris' state variable filter LADSPA plugin (http://plugin.org.uk).

zhzhx~: Turns the input signal into a staticky, distorted mess. Comes with tone control