Suggestions for caption2
The following packages have something in common with the package caption2. The packages are ordered in decreasing similarity.
- bicaption: Support for bilingual captions
 - subcaption: Support for sub-captions
 - ltcaption: Fix some caption problems in longtables
 - caption: Customising captions in floating environments
 - captcont: Retain float number across several floats
 - ccaption: Continuation headings and legends for floats
 - mcaption: Put captions in the margin
 - multicap: Format captions inside multicols
 - capt-of: Captions on more than floats
 - captdef: Declare free-standing \caption commands
 - ftcap: Allows \caption at the beginning of a table-environment
 - subfigure: Deprecated: Figures divided into subfigures
 - sidecap: Typeset captions sideways
 - fltpage: Place caption on an adjacent page
 - topcapt: Place captions above figures or tables
 - hypcap: Adjusting the anchors of captions
 - subfig: Figures broken into subfigures
 - digicap-pro: Creates captions to digital photos
 - boxhandler: Flexible Captioning and Deferred Box/List Printing
 - zaccone: Different configuration for different captions
 - hangcaption: Hanging layout for captions
 - was: A collection of small packages by Walter Schmidt
 - upgreek: Upright Greek letters
 - url: Verbatim with URL-sensitive line breaks
 - texments: Using the Pygments highlighter in LaTeX
 - nath: Natural mathematics notation
 - prosper: LaTeX class for high quality slides
 - subfloat: Sub-numbering for figures and tables
 - alnumsec: Alphanumeric section numbering
 - sudoku: Create sudoku grids
 - morehype: Hypertext tools for use with LaTeX