Suggestions for xpicture
The following packages have something in common with the package xpicture. The packages are ordered in decreasing similarity.
- curve2e: Extensions for package pict2e
 - bez123: Support for Bezier curves
 - curves: Curves for LaTeX picture environment
 - ebezier: Device independent picture environment enhancement
 - hobby: An implementation of Hobby’s algorithm for PGF/TikZ
 - curve: A class for making curriculum vitae
 - picmac: A picture mode in Plain TeX
 - tiscreen: Mimic the screen of older Texas Instruments calculators
 - pict2e: New implementation of picture commands
 - coordsys: Draw cartesian coordinate systems
 - eepic: Extensions to epic and the LaTeX drawing tools
 - egameps: LaTeX package for typesetting extensive games
 - epic: Enhance LaTeX picture mode
 - fullpict: Full page pictures
 - lcd: Alphanumerical LCD-style displays
 - lapdf: PDF drawing directly in TeX documents
 - logsys: Draw logarithmic coordinate systems
 - multibox: Multiple boxes and frames for the picture environment
 - pspicture: PostScript picture support
 - sprite: Macros to typeset simple bitmaps with LaTeX
 - bxeepic: Eepic facilities using pict2e
 - pmboxdraw: Poor man’s box drawing characters
 - t-angles: Draw tangles, trees, Hopf algebra operations and other pictures
 - pmgraph: “Poor man's” graphics
 - pst-bezier: Draw Bezier curves
 - pst-bspline: Draw cubic Bspline curves and interpolations
 - spath3: Manipulate “soft paths” in PGF
 - diagmac2: Diagram macros, using pict2e
 - diagmac: A diagram drawing package
 - pictex2: Adds relative coordinates and improves the \plot command
 - randomwalk: Random walks using TikZ