Suggestions for familytree
The following packages have something in common with the package familytree. The packages are ordered in decreasing similarity.
- genealogy-profiles: Genealogical profiles for LaTeX
 - gtrlib-largetrees: Library for genealogytree aiming at large trees
 - genealogytree: Pedigree and genealogical tree diagrams
 - qobitree: LaTeX macros for typesetting trees
 - syntrace: Labels for tracing in a syntax tree
 - treesvr: Tree macros
 - ecltree: Trees using epic and eepic macros
 - linguex: Format linguists' examples
 - qtree: Draw tree structures
 - rrgtrees: Linguistic tree diagrams for Role and Reference Grammar (RRG) with LaTeX
 - williams: Miscellaneous macros by Peter Williams
 - xyling: Draw syntactic trees, etc., for linguistics literature, using xy-pic
 - xytree: Tree macros using XY-Pic
 - lingtrees: Linguistics trees preprocessor and macros
 - synttree: Typeset syntactic trees
 - prftree: Macros for building proof trees
 - dyntree: Construct Dynkin tree diagrams
 - adtrees: Macros for drawing adpositional trees
 - pb-diagram: A commutative diagram package using LAMSTeX or Xy-pic fonts
 - tree-dvips: Trees and other linguists' macros
 - bondgraph: Create bond graph figures in LaTeX documents
 - chronosys: Drawing time-line diagrams
 - knittingpattern: Create knitting patterns
 - logpap: Generate logarithmic graph paper with LaTeX
 - ditaa: Use ditaa diagrams within LaTeX documents
 - digiconfigs: Writing “configurations”
 - required: Packages “required” of a LaTeX distribution
 - treetex-plain: Draw trees
 - treedef: Macros to typeset trees in Plain TeX
 - nassflow: Drawing Nassi-Shneiderman diagrams and flowcharts
 - syntax2: Creation of syntax diagrams