The JWare/AntX build-core(ownhelpers) package contains standalone utilities and algorithm implementations that are specific to AntX. Unlike its cousin package com.idaremedia.antx.helpers, the ownhelpers classes are specific to AntX. Components of this package can depend on the more generic helpers package but not vice-versa.
There are a few actual standalone utilities like LocalTk and FeedbackSink. However, many of the helper classes belong to little "clumps" or "pairs" of functionality.