figplace – Floating figures in Plain TeX
The macros implement a single stack of floats, and insert a maximum of two per page; the output routine used is an extension of the Plain version.
Maybe you are interested in the following packages as well.
- newinsert: Reworking Plain TeX's insert macros
- placeins-plain: Insertions that keep their place
- harvmac: Macros for scientific articles
- lextex: Typesetting legal documents using plain TeX