Suggestions for tabu

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

Package xltabular: Longtable support with possible X-column specifier
Package ltablex: Table package extensions
Package stabular: Multipage tabular
Package supertabular: A multi-page tables package
Package tabularray: Typeset tabulars and arrays with LaTeX3
Package xtab: Break tables across pages
Package widetable: An environment for typesetting tables of specified width
Package longtable: Allow tables to flow over page boundaries
Package ltxtable: Longtable and tabularx merge
Package cals: Multipage tables with wide range of features
Package nox: Adaptable tables
Package topiclongtable: Extend longtable with cells that merge hierarchically
Package ltabptch: Bug fix for longtable
Package longfigure: Provides a figure-like environment that break over pages
Package tblr-extras: Extra libraries for tabularray for caption and babel compatibility
Package sdaps: LaTeX support files for SDAPS
Package bigtabular: Tabulars that can split at page boundaries
Package bigtable: Multi-page tables in Plain TeX
Package booktabs: Publication quality tables in LaTeX
Package bigstrut: Struts for opening up tabular spacing
Package fcolumn: Typesetting financial tables
Package spreadtab: Spreadsheet features for LaTeX tabular environments
Package tabulary: Tabular with variable width columns balanced
Package tabularht: Tabular extensions originally submitted by Heiko Oberdiek
Package tabularkv: Tabular environments with key-value interface
Package tabularcalc: Calculate formulas in a tabular environment
Package collcell: Collect contents of a tabular cell as argument to a macro
Package hyperxmp: Embed XMP metadata within a LaTeX document
Package pdfx: PDF/X and PDF/A support for pdfTeX, LuaTeX and XeTeX
Package appendixnumberbeamer: Manage frame numbering in appendixes in beamer
Package axessibility: Access to formulas in PDF files by assistive technologies