XNextEvent(3), XPeekEvent(3), XWindowEvent(3), XCheckWindowEvent(3),
 XMaskEvent(3), XCheckMaskEvent(3), XCheckTypedEvent(3),
 XCheckTypedWindowEvent(3) - select events by type

 XSelectInput(3) - select input events

 gnutls_transport_set_lowat(3) - Used to set the lowat value in order for select to
 check for pending data

 tiffcrop(1) - select, copy, crop, convert, extract, and/or process one or more
 TIFF files

 FD_CLR(3), select(3) - synchronous I/O multiplexing

 auditreduce(1) - select records from audit trail files

 comm(1) - select or reject lines common to two files

 select(2) - synchronous I/O multiplexing

 selrecord(9), selwakeup(9) - record and wakeup select requests

 sigwait(2) - select a set of signals

 IO::Select(3) - OO interface to the select system call

 Pod::Select(3), podselect()(3) - extract selected sections of POD from input