Suggestions for fancytabs
The following packages have something in common with the package fancytabs. The packages are ordered in decreasing similarity.
- gradientframe: Simple gradient frames around objects
 - notes: Mark sections of a document
 - sectionbox: Create fancy boxed ((sub)sub)sections
 - shadowtext: Produce text with a shadow behind it
 - shadow: Shadow boxes
 - colorframed: Fix color problems with the package “framed”
 - froufrou: Fancy section separators
 - fancypar: Decoration of individual paragraphs
 - contour: Print a coloured contour around text
 - longfbox: Draw framed boxes with standard CSS attributes that can break over multiple pages
 - parselines: Apply a macro to each line of an environment
 - thmbox: Decorate theorem statements
 - background: Placement of background material on pages of a document
 - sectionbreak: LaTeX support for section breaks
 - gitstatus: Include Git information in the document as watermark or via variables
 - decorule: Decorative swelled rule using font character
 - proofread: Commands for inserting annotations
 - shadethm: Theorem environments that are shaded
 - shadbox: Shade the background of any box
 - ullrcorners: Draw corners on the upper left and lower right sides of a word
 - highlightx: Highlight formulas or paragraphs
 - postit: A LaTeX package for displaying Post-it notes
 - ghab: Typeset ghab boxes in LaTeX
 - crbox: Boxes with crossed corners
 - roundbox: Round boxes in LaTeX
 - tram: Typeset tram boxes in LaTeX
 - terminalcode: Terminal-style code display with ANSI colors, UTF-8 box-drawing, and dark/light themes
 - boites: Boxes that may break across pages
 - framed: Framed or shaded regions that can break across pages
 - niceframe: Support for fancy frames
 - mdframed: Framed environments that can split at page boundaries