Zeal is an offline documentation browser: your personal reference library, searchable in an instant.
Download for Windows Download for Linux Get Dash for macOS
Version 0.9.1
Zeal is an offline documentation browser: your personal reference library, searchable in an instant.
Download for Windows Download for Linux Get Dash for macOS
Version 0.9.1
- ABAP (user contributed)
- Ack (cheatsheet)
- ACL2 (user contributed)
- ActionScript
- Ada (user contributed)
- Adobe Experience Manager (user contributed)
- Agora C++ (user contributed)
- Agora Electron (user contributed)
- Agora Java (user contributed)
- Agora Objective-C (user contributed)
- Agora Recording C++ (user contributed)
- Agora Recording Java (user contributed)
- Agora Web (user contributed)
- aiohttp (user contributed)
- aiomultiprocess (user contributed)
- aiotg (user contributed)
- Airflow (user contributed)
- Akka
- Alembic (user contributed)
- Alfred (user contributed)
- Alpine.js (user contributed)
- AlsaLib (user contributed)
- Altair (user contributed)
- Amazon Redshift Database Developer Guide (user contributed)
- Amethyst (cheatsheet)
- Ampersand.js (user contributed)
- Android (Kotlin)
- Android Codenames, Tags and Build Numbers (cheatsheet)
- Android Emulator (cheatsheet)
- Android Gradle Plugin (user contributed)
- Android KTX (user contributed)
- Angr (user contributed)
- Angular
- AngularJS
- Ansible
- Ansible (cheatsheet)
- Ant Design (user contributed)
- Apache Ant (user contributed)
- Apache Avro (user contributed)
- Apache Beam Python (user contributed)
- Apache Cassandra (user contributed)
- Apache Commons Collections (user contributed)
- Apache Commons CSV (user contributed)
- Apache Commons Lang (user contributed)
- Apache Commons Math (user contributed)
- Apache Commons Text (user contributed)
- Apache Hive (user contributed)
- Apache HTTP Server
- Apache Mesos (user contributed)
- Apache Nifi (user contributed)
- Apache POI (user contributed)
- Apache RocketMQ (user contributed)
- Apex (user contributed)
- Appcelerator Titanium
- AppCode (cheatsheet)
- AppleScript
- Arc Lisp (user contributed)
- Arduino
- Arm A-Profile A32 and T32 ISA (user contributed)
- Arm A-Profile A64 ISA (user contributed)
- Arm A-Profile A64 ISA for Future Architecture Technologies (user contributed)
- Arm A-Profile System Registers (user contributed)
- Arm A-Profile System Registers for Future Architecture Technologies (user contributed)
- Arm Morello A64 ISA (user contributed)
- Arm Morello System Registers (user contributed)
- arviz (user contributed)
- ASCII Tables (cheatsheet)
- AsciiDoctor (cheatsheet)
- Astropy (user contributed)
- Async.js (user contributed)
- Atom (cheatsheet)
- Atom (user contributed)
- AtomFlightManual (user contributed)
- attrs (user contributed)
- AutoHotkey (user contributed)
- AutoIt (user contributed)
- Automaton (user contributed)
- AVR Libc (user contributed)
- AWS CDK (user contributed)
- AWS CDK Python (user contributed)
- AWS CLI (user contributed)
- AWS CloudFormation Template Reference (user contributed)
- AWS JavaScript
- AWS Redshift SQL Reference (user contributed)
- Axios (cheatsheet)
- Azure Resource Manager Template Reference (user contributed)
- Babylon.JS (user contributed)
- BackboneJS
- Bacon.js (user contributed)
- balana-core (user contributed)
- balana-utils (user contributed)
- Bambi (user contributed)
- Bash
- Bash Shortcuts (cheatsheet)
- Bash Test Operators (cheatsheet)
- Basscss (user contributed)
- Bazel (user contributed)
- Beautiful Soup (user contributed)
- BigQuery Standard SQL (user contributed)
- Bitcoin (user contributed)
- Blaze (user contributed)
- Blender (cheatsheet)
- Blender (user contributed)
- Blender Python API (user contributed)
- Bluebird (user contributed)
- Bokeh (user contributed)
- bonobo (user contributed)
- Boost
- Bootstrap 2
- Bootstrap 3
- Bootstrap 4
- Bootstrap 5
- Bootstrap Vue (user contributed)
- boto (user contributed)
- boto3 (user contributed)
- Bottle (user contributed)
- Bourbon
- Box2D (user contributed)
- Brackets (cheatsheet)
- Bridgetown (user contributed)
- Brk Fonts (user contributed)
- Brunch (user contributed)
- Bullet (user contributed)
- Bulma (user contributed)
- BungeeCordAPI (user contributed)
- BungeeCordChat (user contributed)
- C
- C++
- C++ Embedded Template Library (user contributed)
- CakePHP
- Can I use… (user contributed)
- CanJS (user contributed)
- CAPI (user contributed)
- Cappuccino
- Capybara (cheatsheet)
- Carbon (user contributed)
- Cargo (cheatsheet)
- Carthage (cheatsheet)
- Cascading (user contributed)
- CausalPy (user contributed)
- Celery (user contributed)
- Cesium (user contributed)
- CFWheels (user contributed)
- Chai
- Chainer (user contributed)
- Chart.js (user contributed)
- chartjs-plugin-datalabels (user contributed)
- Chassis (user contributed)
- Chef
- Chemical Elements (cheatsheet)
- Chrome Developer Tools (cheatsheet)
- Chrome Extensions API (user contributed)
- Chromium Command Line Switches (cheatsheet)
- Cinder (user contributed)
- CircleCI Standard Variables (cheatsheet)
- Clang (user contributed)
- Claude Code (user contributed)
- click (user contributed)
- ClickHouse (user contributed)
- Clojure
- ClojureDocs (user contributed)
- ClojureScript (user contributed)
- CMake
- Cocos2D
- Cocos2D-X
- Cocos3D
- CodeIgniter
- CodeMirror (user contributed)
- CoffeeScript
- ColdFusion
- Common Lisp
- Compass
- ComponentKit (user contributed)
- Conan (user contributed)
- concourse-ci (user contributed)
- Conda (cheatsheet)
- Conda (user contributed)
- confluent-kafka-python (user contributed)
- Connect IQ SDK (user contributed)
- Constraid (user contributed)
- Consul (user contributed)
- Conventional Commits (cheatsheet)
- Coq (user contributed)
- Cordova
- Corona
- CouchDB
- CQL for Apache Cassandra (user contributed)
- Craft
- Crontab (cheatsheet)
- Crystal (user contributed)
- CSS
- CSS Device Media Queries (cheatsheet)
- CSS Named Colors (cheatsheet)
- CUDA (user contributed)
- CUDA C (cheatsheet)
- cvxpy (user contributed)
- Cython (user contributed)
- D (user contributed)
- D3JS
- Dart
- Dask (user contributed)
- date-fns (user contributed)
- debmake (user contributed)
- Defold (user contributed)
- Deno (user contributed)
- dfply (user contributed)
- Diesel (user contributed)
- discord.js (user contributed)
- discord.py (user contributed)
- Discord4J (user contributed)
- Distributed (user contributed)
- DisVoice (user contributed)
- DITA (user contributed)
- Django
- Django REST Framework (user contributed)
- djangoCMS Documentation (user contributed)
- docassemble (user contributed)
- Docker
- Docker (cheatsheet)
- Dockerfile (cheatsheet)
- Doctrine
- Dojo
- DokuWiki (user contributed)
- dolfin (user contributed)
- DPDK (user contributed)
- Draft.js (user contributed)
- Drupal
- Drupal Console (user contributed)
- Drush (user contributed)
- DuckDB (user contributed)
- dzil (cheatsheet)
- ECharts (Chinese) (user contributed)
- ECharts (user contributed)
- Editorial (user contributed)
- Effect (user contributed)
- eggjs (Chinese) (user contributed)
- eggjs (user contributed)
- EGL (user contributed)
- Eigen (user contributed)
- Einops (user contributed)
- ElasticSearch
- Electron (user contributed)
- Elektra (user contributed)
- Elixir
- Elixir Guards (cheatsheet)
- Elm (user contributed)
- Elvish (user contributed)
- Emacs (cheatsheet)
- Emacs (user contributed)
- Emacs Lisp
- EmberJS
- Emerge (cheatsheet)
- EMF XSD SDK (user contributed)
- Emmet
- Emoji (cheatsheet)
- Entitas (user contributed)
- Entity Framework (user contributed)
- Envoy (user contributed)
- Enzyme (user contributed)
- equinox (user contributed)
- Erlang
- ESLint (user contributed)
- Esoftplay (user contributed)
- Esper (user contributed)
- Expo (user contributed)
- Express
- ExpressionEngine
- ExpressionEngine Parse Order (cheatsheet)
- ExtJS
- Faker (user contributed)
- Faker (user contributed)
- Falcon (user contributed)
- FastMCP (user contributed)
- feedparser (user contributed)
- FFmpeg (user contributed)
- FileMaker (user contributed)
- Final Cut Pro (cheatsheet)
- fiona (user contributed)
- fish (user contributed)
- Flask
- FlaxLinen (user contributed)
- FlaxNNX (user contributed)
- Flex (user contributed)
- Flow (user contributed)
- FLTK (user contributed)
- Flux (user contributed)
- Font Awesome
- Font Awesome (cheatsheet)
- FormEncode (user contributed)
- Foundation
- Foundation for Emails (user contributed)
- fp-ts (user contributed)
- Framework7 (user contributed)
- FreeBSD Handbook (user contributed)
- FreePascal (user contributed)
- FSharp (cheatsheet)
- GDAL (user contributed)
- GDB (cheatsheet)
- Geb (user contributed)
- gensim (user contributed)
- GeoTools (user contributed)
- GeoTrellis (user contributed)
- Gforth (user contributed)
- ggplot2 (user contributed)
- Ghidra (user contributed)
- Git (cheatsheet)
- Git Flow (cheatsheet)
- Git Subversion (cheatsheet)
- GitHub Actions (user contributed)
- GitHub Pages (user contributed)
- GitHub Security and code quality (user contributed)
- Gitmoji (cheatsheet)
- GLFW (user contributed)
- GLib
- GNU Autoconf (user contributed)
- GNU Autoconf Archive (user contributed)
- GNU Automake (user contributed)
- GNU Bison (user contributed)
- GNU C Library (user contributed)
- GNU Coding Standards (user contributed)
- GNU Coreutils (user contributed)
- GNU Emacs Common Lisp Emulation (user contributed)
- GNU Guile (user contributed)
- GNU Guix (user contributed)
- GNU Libtool (user contributed)
- GNU Make (user contributed)
- GNU Scientific Library (user contributed)
- Go
- Godot (user contributed)
- Golly (user contributed)
- Google AdWords Image Ad Specifications (cheatsheet)
- Google App Engine - PHP (user contributed)
- Google App Engine - Python (user contributed)
- Google Apps Script (user contributed)
- Google Closure (user contributed)
- Google Cloud Client Library for Python (user contributed)
- Google Maps (user contributed)
- Google Web Toolkit (user contributed)
- Gradle DSL
- Gradle Java API
- Gradle User Guide
- Grafx2 (cheatsheet)
- Grails
- GraphQL Specification (user contributed)
- Greek Alphabet (cheatsheet)
- Groovy
- Groovy JDK
- Grunt
- GStreamer (user contributed)
- gtkmm (user contributed)
- Guava (user contributed)
- Gulp
- Haiku Book (user contributed)
- Haml
- Hammerspoon (user contributed)
- Handlebars
- Hapi (user contributed)
- HAProxy (user contributed)
- HAProxy Lua (user contributed)
- Hashgraph Online (user contributed)
- Haskell
- Haxe (user contributed)
- HaxeFlixel (user contributed)
- Helix (cheatsheet)
- Heron (user contributed)
- Hiero (user contributed)
- HipChat (cheatsheet)
- Homebridge (user contributed)
- HTML
- HTML Entities (cheatsheet)
- HTML Head Elements (cheatsheet)
- HTTP
- HTTP Header Fields (cheatsheet)
- HTTP Status Codes (cheatsheet)
- HTTP Status Codes for Rails (cheatsheet)
- Hub (cheatsheet)
- Hy Lang (user contributed)
- Hypothesis (user contributed)
- IBM_Maximo_JavaDocs (user contributed)
- ICU (user contributed)
- Idris (user contributed)
- igraph (user contributed)
- imbalanced-learn (user contributed)
- Immutable.js (user contributed)
- Intel Intrinsics (user contributed)
- Intel x86_64 Assembly (user contributed)
- IntelliJ Platform SDK (user contributed)
- IntelliJ Shortcuts (cheatsheet)
- invoke (user contributed)
- io.js (user contributed)
- Ionic
- IonIcons (user contributed)
- iOS Design (cheatsheet)
- IPython (user contributed)
- IPython Notebook (cheatsheet)
- iTerm2 (cheatsheet)
- J (user contributed)
- Jakarta EE 10 (user contributed)
- Jasmine
- Jasmine-jQuery (cheatsheet)
- Java
- Java EE6
- Java EE7
- Java EE8
- Java Lambda Syntax (cheatsheet)
- Java Language Specification (user contributed)
- Java SE10
- Java SE11
- Java SE12
- Java SE13
- Java SE14
- Java SE15
- Java SE16
- Java SE17
- Java SE18
- Java SE19
- Java SE20
- Java SE21
- Java SE22
- Java SE23
- Java SE24
- Java SE25
- Java SE6
- Java SE7
- Java SE8
- Java SE9
- JavaScript
- jax (user contributed)
- jBASE (user contributed)
- JDA (user contributed)
- Jekyll
- Jenkins Job Builder (user contributed)
- Jest (user contributed)
- Jigsaw (user contributed)
- Jinja
- Jira Shortcuts (cheatsheet)
- Joi (user contributed)
- Joomla
- jq (user contributed)
- jQuery
- jQuery Mobile
- jQuery UI
- JSDoc (user contributed)
- JSON for Modern C++ (user contributed)
- json-schema (user contributed)
- JUCE (user contributed)
- Julia
- JUnit4 (user contributed)
- JUnit5 (user contributed)
- jupyter-book (user contributed)
- jvm8-options (user contributed)
- Kafka (user contributed)
- Keras (user contributed)
- Keybase.io (cheatsheet)
- ki (user contributed)
- Kirby (user contributed)
- Kivy (user contributed)
- KnockoutJS
- koa (user contributed)
- Kobold2D
- kornia (user contributed)
- Kotlin (user contributed)
- KStreams (cheatsheet)
- Kubernetes (cheatsheet)
- Kubernetes (user contributed)
- Laravel
- Laravel Mix (user contributed)
- Laravel Zero (user contributed)
- LaTeX
- LaTeX Math Symbols (cheatsheet)
- Leaflet (user contributed)
- Less
- LessHat (user contributed)
- Libav (user contributed)
- libgdx (user contributed)
- librosa (user contributed)
- libssh (user contributed)
- libuv (user contributed)
- libxml2 (user contributed)
- Licenses (cheatsheet)
- LifterLMS (user contributed)
- LightGBM (user contributed)
- Linux Man Pages (user contributed)
- LiveCode (user contributed)
- LiveScript (user contributed)
- LLDB Chisel Commands (cheatsheet)
- LLDB Commands (cheatsheet)
- LLDB to GDB Command Map (cheatsheet)
- llm (user contributed)
- LLVM (user contributed)
- LMDB (user contributed)
- Lo-Dash
- Logstash (user contributed)
- loopback (user contributed)
- Love2d (user contributed)
- Lua 5.1
- Lua 5.2
- Lua 5.3
- Lua 5.4
- Lua 5.5
- Lua Nginx Module (user contributed)
- lxml (user contributed)
- Mac Startup Keys (cheatsheet)
- MacPorts (cheatsheet)
- MacPorts Guide (user contributed)
- Magit for Emacs (cheatsheet)
- MariaDB (user contributed)
- Marimo (cheatsheet)
- MarionetteJS
- Markdown
- Marshmallow (user contributed)
- Mastodon (user contributed)
- MatPlotLib
- Matrix (user contributed)
- mbed-drivers (user contributed)
- MDAnalysis (user contributed)
- MEAN.JS (user contributed)
- Mediawiki (user contributed)
- Mercurial (cheatsheet)
- Meson (user contributed)
- Meteor
- Metric Prefixes (cheatsheet)
- MIME Types (cheatsheet)
- MindSpore (user contributed)
- MiniZinc (user contributed)
- Mjolnir (user contributed)
- MLflow (user contributed)
- mlpy (user contributed)
- MLX (user contributed)
- MNE (user contributed)
- Mocha
- Mockito (user contributed)
- Modal (user contributed)
- MODX (user contributed)
- MomentJS
- MongoDB
- MongoEngine (user contributed)
- Mongoose
- MooTools
- more-itertools (user contributed)
- mori (user contributed)
- MOS Protocol (user contributed)
- MPICH (user contributed)
- Mrjob (user contributed)
- MS SQL (user contributed)
- Mutt (cheatsheet)
- MXNet (user contributed)
- MyBatis (Chinese) (user contributed)
- mypy (user contributed)
- MySQL
- NativeScript (user contributed)
- ncurses (user contributed)
- Neat
- nengo (user contributed)
- Neo4j (user contributed)
- Neovim (user contributed)
- Netcat (cheatsheet)
- Nette Framework (user contributed)
- Netty (user contributed)
- NetworkX (user contributed)
- Next.js (user contributed)
- Nginx
- Nightwatch.js (user contributed)
- Nim (user contributed)
- Nitrogen (user contributed)
- Nix functions (user contributed)
- NLTK (user contributed)
- NodeJS
- NodeMongoDB (user contributed)
- Nomad (user contributed)
- norns (user contributed)
- nox (user contributed)
- npm (cheatsheet)
- npm (user contributed)
- ns-3 (user contributed)
- NSDateFormatter (cheatsheet)
- NSPredicate (cheatsheet)
- Numba (user contributed)
- NumPy
- Nvidia Warp (user contributed)
- Objective-C (cheatsheet)
- Objective-C @Compiler Directives (cheatsheet)
- Objective-C Blocks (cheatsheet)
- Obsidian (cheatsheet)
- OCaml
- OCMock (cheatsheet)
- Octave (user contributed)
- Odin (user contributed)
- Odoo 10 (user contributed)
- Odoo 8 (user contributed)
- Odoo 9 (user contributed)
- Oh-My-Zsh Git (cheatsheet)
- Oh-My-Zsh Kubectl (cheatsheet)
- OIM (user contributed)
- OKD (user contributed)
- Om (user contributed)
- ON1 Photo RAW (cheatsheet)
- OpenCL (user contributed)
- OpenCV
- OpenEdge (user contributed)
- openFrameworks (user contributed)
- OpenGL 2
- OpenGL 3
- OpenGL 4
- OpenGL Extensions (user contributed)
- OpenGL GLSL (user contributed)
- OpenGL Mathematics (user contributed)
- OpenLayers (user contributed)
- OpenResty (user contributed)
- OpenSCAD (cheatsheet)
- openssl (cheatsheet)
- OpenUI5 (user contributed)
- Openvswitch (user contributed)
- OpenXR (user contributed)
- Optuna (user contributed)
- Org Mode (user contributed)
- Origami for Sublime Text (cheatsheet)
- OTRS (user contributed)
- p5js (user contributed)
- Packer (user contributed)
- Pandas
- Pandoc (user contributed)
- Paper (user contributed)
- papermill (user contributed)
- Parse iOS SDK (user contributed)
- path.py (user contributed)
- Pebble (user contributed)
- Peewee (user contributed)
- PeopleTools (user contributed)
- Perl
- Perl 6 (user contributed)
- Phalcon
- Phaser (user contributed)
- Phaser-CE (user contributed)
- PhoneGap
- PHP
- PHP (Deutsch) (user contributed)
- PHP (Español) (user contributed)
- PHP (Français) (user contributed)
- PHP (Italiano) (user contributed)
- PHP (Português Brasileiro) (user contributed)
- PHP (Türkçe) (user contributed)
- PHP (Русский) (user contributed)
- PHP (Українська) (user contributed)
- PHP (日本語) (user contributed)
- PHP (简体中文) (user contributed)
- phpSpec (cheatsheet)
- PhpStorm (cheatsheet)
- PHPUnit
- PHPUnit in Laravel (cheatsheet)
- PhysicsFS (user contributed)
- pika (user contributed)
- Pillow (user contributed)
- Pin (user contributed)
- Pixi (cheatsheet)
- PlantUML (user contributed)
- Play Java
- Play Scala
- PlayCanvas (user contributed)
- Ploi API (user contributed)
- Plone (user contributed)
- plotnine (user contributed)
- pnpm (user contributed)
- Poco (user contributed)
- polars (user contributed)
- Polymer.dart
- PostGIS (user contributed)
- PostgreSQL
- PostgreSQL CLI (cheatsheet)
- PouchDB (user contributed)
- Powershell (user contributed)
- Praat (user contributed)
- Presto (user contributed)
- Prezto (cheatsheet)
- Prezto Git (cheatsheet)
- Processing
- PrototypeJS
- psycopg2 (user contributed)
- Pug
- puma-dev (cheatsheet)
- pup (user contributed)
- Puppet
- Pure (user contributed)
- Purpur (user contributed)
- pwntools (user contributed)
- Pydial (user contributed)
- Pydoop (user contributed)
- PyGame (user contributed)
- Pygments (user contributed)
- PyGraphviz (user contributed)
- PyInstaller (user contributed)
- pymatgen (user contributed)
- PyMC (user contributed)
- PyMC3 (user contributed)
- PyMel (user contributed)
- PyMongo (user contributed)
- PyMuPDF (user contributed)
- PyPDF (user contributed)
- PyQGIS (user contributed)
- pyqtgraph (user contributed)
- Pyramid (user contributed)
- pyro (user contributed)
- pysam (user contributed)
- PySide (user contributed)
- pyspark (user contributed)
- PyTables (user contributed)
- pytest (user contributed)
- Python (Chinese) (user contributed)
- Python 2
- Python 3
- Python Debugger (cheatsheet)
- Python Enhancement Proposals (user contributed)
- Python Exceptions (cheatsheet)
- Python Format Strings (cheatsheet)
- Python Telegram Bot (user contributed)
- Python unittest Assertions (cheatsheet)
- python3-trepan (user contributed)
- Pythonista (user contributed)
- PyTorch (user contributed)
- PyTorch-Geometric (user contributed)
- PytorchLightning (user contributed)
- Pywikibot (user contributed)
- QEMU (user contributed)
- QGIS (user contributed)
- Qt 4
- Qt 5
- Qt 6
- Qt for Python (PySide 2/PySide 6) (user contributed)
- Quantum ESPRESSO (user contributed)
- quimb (user contributed)
- R
- R5RS (user contributed)
- Racket
- Rails i18n (cheatsheet)
- Rails Migrations CLI (cheatsheet)
- Ramda (user contributed)
- ranger (cheatsheet)
- Raphael.js (user contributed)
- Raspberry Pi Pico SDK (user contributed)
- Raycast (user contributed)
- RBQL (cheatsheet)
- Re:VIEW (user contributed)
- React
- React Native (user contributed)
- React Router (user contributed)
- Realm Java (user contributed)
- Redaxo (user contributed)
- Redbeard (user contributed)
- Redis
- Redux (user contributed)
- redux-saga (user contributed)
- Regular Expressions (cheatsheet)
- Relay (user contributed)
- Remix (user contributed)
- RenPy_Engine (user contributed)
- Requests (user contributed)
- Requests-HTML (user contributed)
- RequireJS
- Restify (user contributed)
- RethinkDBJS (user contributed)
- RFCs (user contributed)
- ROS (cheatsheet)
- RSMTool (user contributed)
- RSpec Expectations (cheatsheet)
- RuboCop (user contributed)
- RuboCop Capybara (user contributed)
- RuboCop factory_bot (user contributed)
- RuboCop Minitest (user contributed)
- RuboCop Packaging (user contributed)
- RuboCop Performance (user contributed)
- RuboCop Rails (user contributed)
- RuboCop RSpec (user contributed)
- RuboCop RSpec Rails (user contributed)
- RuboCop ThreadSafety (user contributed)
- Ruby
- Ruby 2
- Ruby 3
- Ruby 4
- Ruby on Rails 3
- Ruby on Rails 4
- Ruby on Rails 5
- Ruby on Rails 6
- Ruby on Rails 7
- Ruby on Rails 8
- Ruby strftime (cheatsheet)
- RubyMotion
- Rust
- RxJava (user contributed)
- RxJS (user contributed)
- RxSwift (user contributed)
- SailsJS
- Salesforce Apex (user contributed)
- Salesforce Lightning (user contributed)
- Salesforce Visualforce (user contributed)
- SaltStack
- Salyut (Chinese) (user contributed)
- Sass
- Scala
- ScalaFX (user contributed)
- scikit-image (user contributed)
- scikit-learn (user contributed)
- SciPy
- Scrapy (user contributed)
- screen (cheatsheet)
- Screeps (user contributed)
- Scrivener (cheatsheet)
- SDL (user contributed)
- seaborn (user contributed)
- Semantic Branches (cheatsheet)
- Semantic Commits (cheatsheet)
- Semantic UI
- Sencha Touch
- Sendmail Milter (user contributed)
- Sequelize (user contributed)
- Serverspec (user contributed)
- shapely (user contributed)
- Shogun Machine Learning Toolbox (user contributed)
- Should.js (user contributed)
- SilverStripe Templates (cheatsheet)
- Sinon
- SIP Response Codes (cheatsheet)
- Siteleaf (cheatsheet)
- Six (user contributed)
- Skeleton (user contributed)
- Sketch (cheatsheet)
- Skyfield (user contributed)
- Slim Framework (user contributed)
- Smarty
- SMTP Status Codes (cheatsheet)
- Snap.svg (user contributed)
- Snyk (cheatsheet)
- Solarus (user contributed)
- Solidity (user contributed)
- Soot (user contributed)
- Sourcetree (cheatsheet)
- Spacemacs (user contributed)
- Sparrow
- SpeechBrain (user contributed)
- Sphinx (user contributed)
- Sphinx Search Server (user contributed)
- SpigotMC (user contributed)
- SPIR-V (user contributed)
- Spring Boot (user contributed)
- Spring Framework
- SQLAlchemy
- SQLite
- SQLite (cheatsheet)
- sqlite-utils (user contributed)
- Standard ML (user contributed)
- Statamic
- statsmodels (user contributed)
- Storm (user contributed)
- Streamlit (user contributed)
- strftime Format Codes (cheatsheet)
- structlog (user contributed)
- Stylus
- Sublime Merge (user contributed)
- Sublime Text (user contributed)
- Sublime Text 2 (cheatsheet)
- Sublime Text 3 (cheatsheet)
- Sublime Text Plugin API (user contributed)
- SUIT CSS Naming Conventions (cheatsheet)
- SuperCollider (user contributed)
- Susy
- Svelte (user contributed)
- SVG
- SWI Prolog (user contributed)
- Swift
- Swift (cheatsheet)
- Swift Language Guide (user contributed)
- Swift Package Manager (user contributed)
- Swoole (Chinese) (user contributed)
- Symfony
- Symfony Docs (user contributed)
- SymPy (user contributed)
- Tailwind CSS (user contributed)
- Tcl
- TCLAP (user contributed)
- TensorFlow (user contributed)
- TensorFlow 2 (user contributed)
- TensorFlow Probability (user contributed)
- Terraform (user contributed)
- Textastic (cheatsheet)
- Theano (user contributed)
- Things (cheatsheet)
- ThinkJS (user contributed)
- Three.js (user contributed)
- Tiki (user contributed)
- tldr pages (user contributed)
- tmux (cheatsheet)
- torchaudio (user contributed)
- TorchMetrics (user contributed)
- torchtext (user contributed)
- torchvision (user contributed)
- Tornado
- Tower (cheatsheet)
- toyplot (user contributed)
- Transformers (user contributed)
- Trello (cheatsheet)
- Trino (user contributed)
- Triton (user contributed)
- tsdoc (user contributed)
- Twig
- Twisted
- TypeScript
- TYPO3
- UIKit (user contributed)
- UnderscoreJS
- Unicode Characters (user contributed)
- Unity 3D
- Unix File Permissions (cheatsheet)
- Unreal Engine 4 (user contributed)
- Updeep (user contributed)
- uv (user contributed)
- UVM (user contributed)
- uWSGI (user contributed)
- Vaadin (user contributed)
- Vagrant
- Varnish (user contributed)
- Vault (user contributed)
- vCloud Director (user contributed)
- Vega (user contributed)
- Vega-Lite (user contributed)
- Velocity (user contributed)
- VHDL93 (user contributed)
- Vibe.d (user contributed)
- Vim
- Vim (cheatsheet)
- Vim (Chinese) (cheatsheet)
- VimBox (cheatsheet)
- Vimdiff (cheatsheet)
- virtualenv (user contributed)
- Visidata (cheatsheet)
- Visual Studio Code (cheatsheet)
- Visual Studio Code (user contributed)
- Visualforce (user contributed)
- VMware vSphere
- VueJS
- Vulkan (user contributed)
- Wagtail (user contributed)
- Wand (user contributed)
- WebApp2 (user contributed)
- WebExtensions (user contributed)
- WebOb (user contributed)
- webpack (user contributed)
- WebSocket Status Codes (cheatsheet)
- WebTest (user contributed)
- Werkzeug (user contributed)
- WooCommerce (user contributed)
- WordPress
- Working Copy (cheatsheet)
- WP-CLI (user contributed)
- WPILib (user contributed)
- WPS (user contributed)
- wxPython (user contributed)
- wxWidgets (user contributed)
- xarray (user contributed)
- Xcode (cheatsheet)
- Xcode UI Testing (cheatsheet)
- XCTest (user contributed)
- Xdebug (user contributed)
- XGBoost (user contributed)
- XMake (user contributed)
- Xojo
- Xojo (user contributed)
- XSLT
- YAML (cheatsheet)
- Yard (cheatsheet)
- Yarn (user contributed)
- Yazi (cheatsheet)
- Yii
- You Might Not Need jQuery (cheatsheet)
- YUI
- Zend Framework 1
- Zend Framework 2
- Zend Framework 3
- ZeptoJS
- Zig (user contributed)
- Zimbra SOAP API (user contributed)
- Zimbra Zimlet API (user contributed)
- Zsh (user contributed)