Examples of powerful LaTeX packages and techniques in use — a great way to learn LaTeX by example. Search or browse below.

Writing a LaTeX Class File to Produce a Form
tex based on webpage from LaTeX Community.
website: http://www.latex-community.org/index.php?option=com_content&view=article&id=342%3Awriting-a-latex-class-file-to-produce-a-form&catid=54%3Alatex-document-classes&Itemid=112
Originally Written by Nicola Talbot.
Friday, 20 November 2009 11:55
Cristian B. Gonzalez

PW
Simple Sectioned Essay Template
LaTeX Template
This template has been downloaded from:
http://www.latextemplates.com
Note:
The \lipsum[#] commands throughout this template generate dummy text
to fill the template out. These commands should all be removed when
writing essay content.
Costash

Creating an index with the makeidx package
This is a short example to show how the \makeindex and \printindex commands can be used to create and display a document index.
Example originally from http://www.dickimaw-books.com/latex/thesis/html/makeidx.html
A modification of this example by John Hammersley

Background page
Magister
Hariz Khaled

Flowchart in Tikz/PGF
An example flowchart using Tikz/PGF.
Dilawar Singh

Example using mathexam
An example exam paper using mathexam package features. The mathexam package can help in creating exams for math or related disciplines (which are required to show calculations followed by short answers).
This example was originally published on ShareLaTeX and subsequently moved to Overleaf in November 2019.
Uploaded from ShareLaTeX

UFSCar - DC - CAP: escrita de algoritmos
Modelo para geração de algoritmos
UFSCar/DC/CAP
Jander Moreira

Zadatak
.
Hamza Merzic

2D Graphics with Asymptote
This example shows how you can use Asymptote on writeLaTeX. Asymptote is a powerful vector graphics language for technical drawings. Labels and equations are typeset with LaTeX, for high-quality output.
The Asymptote project.