Suggestions for Crbox

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

Package shadbox: Shade the background of any box
Package roundbox: Round boxes in LaTeX
Package ghab: Typeset ghab boxes in LaTeX
Package tram: Typeset tram boxes in LaTeX
Package postit: A LaTeX package for displaying Post-it notes
Package codebox: Highlighted source code in a fancy box
Package longfbox: Draw framed boxes with standard CSS attributes that can break over multiple pages
Package coloredtheorem: A colourful boxed theorem environment
Package boites: Boxes that may break across pages
Package mdframed: Framed environments that can split at page boundaries
Package framed: Breakable framed and shaded boxes
Package frame: Framed boxes for Plain TeX
Package shadebox: Shade boxes using PostScript specials
Package fancytabs: Fancy page border tabs
Package gradientframe: Simple gradient frames around objects
Package sectionbox: Create fancy boxed ((sub)sub)sections
Package notes: Mark sections of a document
Package alertmessage: Alert messages for LaTeX
Package lroundrect: LaTeX macros for utilizing the roundrect METAPOST routines
Package nccboxes: Elaborate box commands
Package copyrightbox: Provide copyright notices for images in a document
Package decimal: LaTeX package for the English raised decimal point
Package eqell: Sympathetically spaced ellipsis after punctuation
Package emarks: Named mark registers with ε-TeX
Package lips: Text ellipses in LaTeX
Package xellipsis: Extremely configurable ellipses with formats for various style manuals
Package brandstyler: Automatic brand style implementation
Package manuscript: Emulate look of a document typed on a typewriter
Package responsive: Adaptive layout techniques for LaTeX documents
Package titles: Typeset book and article titles in LaTeX
Package dpcircling: Decorated text boxes using TikZ