LaTeX Packages and Document Classes from Silmaril

LATEX is a document-preparation system

LATEX lets you concentrate on writing, and does the formatting based on the rules you provide.
Install an open source or commercial distribution — all are compatible and run on Macs, Windows, and Linux. Or use it online with Overleaf, LATEX Base, Papeeria, and others.
• There are nearly 300 templates (classes) for the layout of different classes of documents.
• There are over 6,000 plugins (packages) covering almost every document formatting requirement.
Dozens of books and hundreds of web sites where you can learn how to use LATEX.
Online help from the tex.stackexchange web site, the comp.text.tex Usenet newsgroup, and the texhax mailing list; plus many consulting and production services.

The linked directories contain both the zip file and the individual files.

bookshelf bookshelf ☙ for creating a bookshelf image from a BIBTEX bibliography
classpack classpack ☙ for formatting the documentation of ClassPack packages
decorule decorule ☙ a decorative swelled rule
euflag euflag ☙ the flag of the European Union
supertramp supertramp ☙ macros for use with Vivian Dehning’s Super Tramp font
symbats3 symbats3 ☙ macros for use with Feòrag’s Symbats3 neopagan dingbats fonts
uccthesis uccthesis ☙ a thesis layout for University College Cork
veryshortguide veryshortguide ☙ a very short (4 pp) guide to LATEX

These packages are all on the Comprehensive TEX Archive Network (CTAN). The versions here may be more recent or experimental.

Using TEXLive or MacTEX from the TUG web site or DVD?: Use tlmgr to install these packages from CTAN. You don’t need the copies from here.
Using MiKTEX or ProTEXt?: Use the MiKTEX Console to install these packages from CTAN. You don’t need the copies from here.
Using Debian texlive or texlive-full from your Linux system repository?: Use the TEX Directory Structure (TDS) files here to unzip the packages directly into your Personal TEX Directory.
Using something different?: Use the DTX and INS files from here for manual installation.