The list below is not meant to be complete. Suggestions are very welcome to make it as comprehensive as possible. Discussions can be started in new threads with reference to this topic here.
Bibliography
Data Handling
Figures (Placement/Integration)
Figures (Sub-Figures)
- obsolete: subfigure, [url=http://ctan,org/pkg/subfig]subfig[/url]
- up-to-date: floatrow, hvfloat, subcaption (from caption)
Font Encoding
Fonts (for pdfTeX*)
- obsolete: mathptm, pslatex, times (see l2tabu)
- up-to-date: txfonts or newtx bundle, combination of mathptmx, »helvet« (from PSNFSS), courier/luximono (see l2tabu)
- obsolete: mathpple, »palatino« (from PSNFSS)
- up-to-date: pxfonts or newpx bundle, combination of mathpazo, »helvet« (from PSNFSS), courier/luximono (see l2tabu)
Glossaries
- obsolete: glossary
- up-to-date: glossaries
Graphics
Graphics (Inclusion)
Input Encoding
Language
Lists
Multimedia
Page Layout
- obsolete: anysize, vmargin
- up-to-date: geometry, typearea (from KOMA Script)
Page Styles
- obsolete: fancyheadings, scrpage2
- up-to-date: fancyhdr, titleps, scrlayer-scrpage
Presentations
- obsolete: HA-Prosper, prosper, seminar
- up-to-date: beamer, powerdot
Scientific Units and Numbers
Tables
Text Layout
- obsolete: doublespace
- up-to-date: setspace
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* Font handling for XeTeX and LuaTeX differs.