Suggestions for isopt

The following packages have something in common with the package isopt. The packages are ordered in decreasing similarity.

Package sgmlcmpt: Support for LaTeX formulae as SGML PCDATA
Package globalvals: Declare global variables
Package rulerbox: Draw rulers around a box
Package fgruler: Draw rulers on the foreground or in the text
Package projlib: A collection of facilitative tools
Package ptlatexcommands: LaTeX to commands in Portuguese
Package scanpages: Support importing and embellishing scanned documents
Package scalebar: Create scalebars for maps, diagrams or photos
Package latex-uni8: Universal inputenc, fontenc, and babel for pdfLaTeX and LuaLaTeX
Package modernruler: Flexible ruler and annotation commands with key-value support and vertical writing compatibility
Package grayhints: Produce gray hints to a variable text field
Package labelschanged: Identify labels which cause endless may have changed warnings
Package ruler: A typographic ruler for TeX
Package olsak-misc: Collection of plain TeX macros written by Petr Olšák
Package ltxmisc: Miscellaneous LaTeX packages, etc.
Package vvcode: Reliable encoder for binary files via email
Package lug: Create and edit TeX Local User Group web pages
Package style-showcase: Make a web page to compare styles
Package acroreloadpdf: Reload-the-current-PDF utility for Adobe Reader on Unix systems
Package texilikecover: A cover-page package, like TeXinfo
Package abstbook: Books of abstracts
Package beletter: Typeset Belgian letters
Package bibcheck: Check on references to items in thebibliography
Package concrete-macros: Consistent text and maths using concrete fonts
Package hexdump: Read and typeset ASCII hexdump files
Package iagproc: Class for two column IAG Proceedings articles
Package linsys: Typeset systems of linear equations
Package mitpress: Typeset documents for MIT Press
Package raggedr: Set an entire document raggedright
Package texilikechaps: Format chapters with a texi-like format
Package vrbexin: Verbatim input support