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DZone’s Free cheatsheets for developers:

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  • 150+ cards with the latest topics, languages, and platforms
ID D/L Title Downloads Tags
8  Download Design Patterns 164,028 ×Architecture
2  Download Getting Started with Ajax 93,933 ×HTML×JavaScript×Web Services/Servers
4  Download Spring Configuration 93,019 ×Java×XML
24  Download Core Java 83,983 ×Algorithms×Java×Standards
7  Download jQuery Selectors 83,466 ×CSS×JavaScript
19  Download Core CSS: Part I 80,776 ×CSS
94  Download Getting Started with Git 80,221 ×ALM×Open Source
61  Download Core Java Concurrency 77,616 ×Algorithms×Java
3  Download Getting Started with Eclipse 66,579 ×ALM×Eclipse×IDE
25  Download Core CSS: Part II 65,699 ×CSS
5  Download Windows PowerShell 63,846 ×.NET×Windows
29  Download Essential Admin for MySQL 5.5 63,742 ×Database×Open Source
123  Download HTML5: New Standards for Web Interactivity 63,423 ×HTML×Standards
34  Download Core CSS: Part III 60,584 ×CSS
50  Download Scrum 60,519 ×Agile/Methodologies
26  Download Spring Annotations 59,048 ×Java
112  Download Getting Started with UML 57,366 ×ALM×Architecture×Open Source
129  Download REST: Foundations of RESTful Architecture 56,278 ×Standards×Web Services/Servers
64  Download Core HTML 54,397 ×HTML
16  Download C# 53,779 ×.NET×C#
55  Download Apache Maven 2 51,675 ×ALM×Java×Open Source
28  Download JUnit and EasyMock 50,057 ×ALM×Java
38  Download SOA Patterns 48,369 ×Architecture×SOA×Web Services/Servers
35  Download Using XML in Java 47,643 ×Java×XML
22  Download Getting Started with JPA 47,554 ×Database×Java×Standards
76  Download Getting Started with Domain-Driven Design 46,705 ×Agile/Methodologies×Architecture
95  Download Getting Started with Java GUI Development 43,832 ×Design/UX×Java
6  Download Dependency Injection in EJB 3 42,771 ×Java×Standards×XML
21  Download JavaServer Faces 41,848 ×Design/UX×Java×Standards×XML
84  Download Continuous Integration: Patterns and Anti-patterns 41,558 ×ALM
130  Download Designing Quality Software: Architectural and Technical Best Practices 39,959 ×Architecture
58  Download JavaServer Faces 2.0 39,846 ×Java×Standards
82  Download Getting Started with Cloud Computing 39,525 ×Cloud
15  Download Groovy 39,267 ×Groovy×Java
101  Download JDBC Best Practices 38,709 ×Architecture×Database×Java×Standards
117  Download Getting Started with Apache Hadoop 35,324 ×Architecture×Big Data×Database×Open Source
145  Download Continuous Delivery: Patterns and Antipatterns in the Software Lifecycle 34,847 ×Agile/Methodologies×ALM×DevOps
79  Download Google App Engine for Java 34,676 ×Cloud×Java
141  Download Node.js: Building for Scalability with Server-Side JavaScript 34,317 ×JavaScript×Open Source
43  Download Scalability & High Availability 34,148 ×Architecture×Big Data×Database
151  Download HTML5 Canvas: A Web Standard for Dynamic Graphics 33,460 ×HTML×Standards×JavaScript
18  Download Core .NET 33,144 ×.NET×C#
32  Download Getting Started with Hibernate Search 32,885 ×Database×Java×Search
105  Download Getting Started with NoSQL and Data Scalability 32,843 ×Big Data×Database×NoSQL
20  Download Struts2 32,755 ×Design/UX×Java×Open Source
174  Download Object-Oriented JavaScript: Advanced Techniques for Serious Web Applications 32,074 ×JavaScript
173  Download Core JSON: The Fat Free Alternative to XML 31,534 ×JavaScript
33  Download Essential JSP Expression Language 31,336 ×Java×Standards
30  Download Essential Ruby 30,936 ×Ruby
98  Download Getting Started with Maven Repository Management 30,817 ×ALM×Java
85  Download Vaadin: A Familiar Way to Build Web Apps with Java 30,505 ×Design/UX×Java×JavaScript
99  Download Getting Started with Java EE Security 30,444 ×Java×Security×Standards
74  Download Agile Adoption: Improving Software Quality 30,411 ×Agile/Methodologies×Architecture
86  Download Spring Web Flow 29,756 ×Design/UX×E-Commerce×IDE×Java
150  Download Java Enterprise Edition 6: The Most Elegant Enterprise Java yet 29,617 ×Java
108  Download Getting Started with Firebug 1.5 29,186 ×ALM×CSS×HTML×JavaScript
83  Download Contexts and Dependency Injection for the Java EE Platform 28,379 ×Java×Standards
110  Download Objective-C for the iPhone and iPad 28,151 ×C/C++×iOS
1  Download GWT Style, Configuration and JSNI Reference 27,719 ×Java×JavaScript
71  Download Essential PostgreSQL 27,638 ×Database×Open Source
119  Download Getting Started with Application Lifecycle Management 27,410 ×ALM
152  Download HTML5 WebSocket: Full-duplex Real-time Web Communication 27,390 ×HTML×Standards×JavaScript
155  Download Mockito: A Simple, Intuitive Mocking Framework 27,177 ×Java×Agile/Methodologies
109  Download Getting Started with Kanban for Software Development 26,974 ×Agile/Methodologies
104  Download Getting Started with Apache Ant 26,757 ×ALM×Java×Open Source×XML
17  Download Very First Steps in Flex 26,660 ×Flex/ActionScript×Java×Web Services/Servers
87  Download Continuous Integration: Servers and Tools 26,591 ×ALM×Open Source
14  Download NetBeans IDE 7: Programming in Java 7 26,492 ×IDE×Java×NetBeans
128  Download What's New in JPA 2.0 26,236 ×Database×Java×Standards
166  Download Patterns of Modular Architecture 25,839 ×Architecture×Java×Eclipse
172  Download HTTP: The Hypertext Transfer Protocol 25,695 ×Web Services/Servers×Standards
67  Download Getting Started with Selenium 24,592 ×ALM×JavaScript×Open Source
54  Download Agile Adoption: Reducing Cost 24,526 ×Agile/Methodologies
139  Download Spring Roo: Making Java Fun Again 24,397 ×IDE×Java
13  Download RSS and Atom 24,129 ×Content Management×Web Services/Servers
196  Download Regular Expressions 24,097 ×Algorithms×Patterns×Search
51  Download Effective Process Modeling with BPM & BPMN 24,066 ×Agile/Methodologies×Other Languages
147  Download Eclipse Tools for Spring: The SpringSource Tool Suite 23,902 ×Eclipse×IDE×Java
171  Download MongoDB 23,574 ×Architecture×NoSQL×Database
46  Download Core ASP.NET 23,543 ×.NET×C#
59  Download Getting Started with Drupal 7 23,450 ×PHP×Content Management×Drupal
93  Download Getting Started with Lean Software Development 23,407 ×Agile/Methodologies
118  Download Getting Started with Visual Studio 2010 23,211 ×.NET×C#×IDE
164  Download Getting Started with Scala 23,045 ×JVM×Java×Scala
57  Download Getting Started with Spring-DM 22,989 ×Architecture×Java
120  Download Apache Solr: Getting Optimal Search Results 22,932 ×Algorithms×Search×Web Services/Servers×XML
44  Download JBoss RichFaces 22,767 ×Java×Standards×XML
78  Download Getting Started with Virtualization 22,702 ×.NET×Virtualization
56  Download Getting Started with JavaFX 22,609 ×Java
45  Download Agile Adoption: Decreasing Time to Market 22,552 ×Agile/Methodologies×ALM
168  Download Refactoring Patterns 22,011 ×Architecture×Java×
60  Download Getting Started with Grails 21,630 ×Groovy
106  Download Expression-Based Authorization with Spring Security 3 21,441 ×Java×Security×XML
125  Download Selenium 2.0: Using the WebDriver API to Create Robust User Acceptance Tests 21,299 ×ALM×JavaScript×Open Source
198  Download Java Enterprise Edition 7: Streamlining Modern Java Development 21,069 ×Java
165  Download Deployment Automation Patterns 20,967 ×Agile/Methodologies×ALM×DevOps
114  Download Application Prototyping with SketchFlow 20,809 ×.NET×ALM×Design/UX
11  Download IntelliJ IDEA 20,788 ×ALM×IDE
135  Download The MVVM Design Pattern: A Formula for Elegant, Maintainable Mobile Apps 20,744 ×.NET×Architecture×Windows Phone
97  Download Getting Started with JBoss Enterprise Application Platform 5 20,551 ×ALM×Java×Standards
158  Download Big Data Machine Learning: Patterns for Predictive Analytics 20,073 ×Algorithms×Database×Big Data
169  Download Essential Apache HTTP Server 19,777 ×Web Services/Servers×LAMP
111  Download Getting Started with Windows Communication Foundation 4.0 19,676 ×.NET×Web Services/Servers
62  Download Getting Started with Eclipse RCP 19,643 ×Eclipse×IDE
178  Download Git Patterns and Anti-Patterns: Scaling from Workgroup to Enterprise 19,310 ×ALM×Open Source
70  Download Eclipse Plug-in Development 19,131 ×Eclipse
126  Download Liferay Essentials: A Definitive Guide for Enterprise Portal Development 18,636 ×Content Management×Design/UX×Java
102  Download Flex 4 and Spring 3 Integration 18,544 ×Flex/ActionScript×Java×Web Services/Servers×XML
144  Download EclipseLink JPA: An Advanced ORM Persistence Framework 18,490 ×Database×Eclipse×Java
41  Download SOA Governance 18,477 ×SOA
133  Download Apache Hadoop Deployment: A Blueprint for Reliable Distributed Computing 18,332 ×Algorithms×Architecture×Big Data×Database×Open Source
177  Download HTML5 Web Workers: Multithreaded JavaScript for High-Performance Web Applications 18,295 ×HTML×Javascript×Architecture
37  Download Getting Started with Equinox and OSGi 18,177 ×Architecture×Eclipse×Java
163  Download Code Gems for Android Developers: Working with the World's Most Popular Mobile OS 18,141 ×Java×Android
72  Download Getting Started with Windows Presentation Foundation 18,070 ×.NET×Design/UX
137  Download Understanding Lucene: Powering Better Search Results 18,066 ×Algorithms×Java×Search×XML
27  Download Getting Started with MyEclipse 18,058 ×Eclipse×IDE×Java
12  Download Getting Started with GlassFish Application Server v3 18,057 ×Java×Standards×Web Services/Servers
31  Download Core Seam 17,856 ×Java×Security×XML
10  Download Silverlight 2 17,703 ×.NET×C#×Design/UX
63  Download Getting Started with Apache Wicket 17,673 ×Design/UX×Java×Open Source
148  Download Mastering Portal UI Development With Vaadin and Liferay 17,669 ×Content Management×Design/UX×Java
48  Download Flex & Spring Integration 17,413 ×Flex/ActionScript×Java×XML
200  Download Java Performance Optimization 17,217 ×Java×Performance×JVM
153  Download Apache Cassandra: A Fault-Tolerant, Massively Scalable NoSQL Database 17,131 ×Database×NoSQL
138  Download RichFaces 4.0: A Next Generation JSF Framework 17,075 ×
69  Download Getting Started with ASP.NET MVC 1.0 17,074 ×.NET
192  Download CSS3: Basics 17,035 ×CSS×CSS3×Web Design
186  Download HTML5 Mobile Development 16,829 ×HTML×HTML5
80  Download NetBeans Platform 7.0: A Framework for Building Pluggable Enterprise Applications 16,293 ×IDE×Java
162  Download Java Profiling with VisualVM: X-Ray Vision for Dramatic Performance Gains 16,130 ×Java
154  Download Jetty: A Lightweight, Open-Source Web Server and Servlet Container 16,120 ×Java×Web Services/Servers
199  Download Debugging JavaScript 15,940 ×JavaScript
131  Download ADO.NET Entity Framework: Object-Relational Mapping and Data Access 15,766 ×.NET×Database×IDE
193  Download Core Python 15,747 ×Python×Core
47  Download The Top Twelve Integration Patterns for Apache Camel 15,455 ×Architecture×Java×XML
81  Download Essential F# 15,440 ×.NET×Other Languages
167  Download Software Configuration Management Patterns 15,426 ×Architecture×Agile
39  Download Essential EMF 15,402 ×Architecture×Eclipse×Java×Other Languages×XML
122  Download Functional Programming with Clojure: Simple Concurrency on the JVM 15,211 ×Clojure×Java
42  Download Seam UI 15,206 ×Design/UX×Java×Standards
77  Download Core WS-BPEL: Business Process Execution Language 14,910 ×Agile/Methodologies×Other Languages×Standards
124  Download PHPUnit: PHP Test-Driven Development - Automated Tools to Improve Your PHP Code Quality 14,600 ×ALM×PHP
36  Download Core Mule 14,554 ×Architecture×Open Source×SOA
89  Download Getting Started with the Zend Framework 14,513 ×IDE×Open Source×PHP
100  Download Getting Started with Fitnesse 14,427 ×ALM
184  Download Core Spring Data 14,411 ×Database×Java×Architecture×NoSQL
136  Download WebMatrix: Advanced Web Development Made Simple 14,103 ×.NET×Content Management×E-Commerce×PHP×Windows
146  Download Flex Mobile Development: Build Apps for Android, iOS, and BlackBerry Tablet OS 14,098 ×Android×Flex/ActionScript×IDE×iOS
92  Download Getting Started with Silverlight and Expression Blend 14,097 ×.NET×C#×Design/UX×IDE
157  Download Database Partitioning with MySQL: Improving Performance, Availability, and Manageability 13,942 ×Database×Open Source
9  Download Flexible Rails: Flex 3 on Rails 2 13,883 ×Flex/ActionScript×Ruby
149  Download Chef: An Open Source Tool for Scalable Cloud and Data Center Automation 13,216 ×
189  Download Core C++ 13,066 ×C++×Core
65  Download ServiceMix 4.2: The Apache Open Source ESB 12,994 ×Architecture×Open Source×SOA×Web Services/Servers
23  Download PHP 5.4 12,964 ×PHP
182  Download Practical DNS: Managing Domains for Safety, Reliability, and Speed 12,826 ×DevOps×ALM
183  Download Data Mining: Discovering and Visualizing Patterns with Python 12,801 ×Database×Python×Architecture×Big Data
156  Download JavaFX 2.0: A Rich Client Platform for Java 12,786 ×Java×Design/UX
134  Download Cloud Computing with Windows Azure Platform 12,719 ×.NET×Cloud×Windows
161  Download Jenkins on PaaS: Continuous Integration with Jenkins for Java Projects 12,524 ×CI×Open Source×Java
40  Download Apache Tapestry 5.0 12,332 ×Design/UX×Java×Standards
194  Download Search Patterns 12,233 ×Search×Patterns
185  Download Getting Started with Subversion 12,156 ×ALM×Open Source
159  Download Apache HBase: The NoSQL Database for Hadoop and Big Data 12,135 ×Database×Big Data
180  Download Preparing for Continuous Delivery 11,979 ×Agile/Methodologies×ALM×DevOps
68  Download Getting Started with Oracle Berkeley DB 11,791 ×Database×NoSQL
160  Download Data Warehousing: Best Practices for Collecting, Storing, and Delivering Decision-Support Data 11,682 ×Database×Big Data×Business Intelligence/Reporting
75  Download Getting Started with BlazeDS 11,516 ×Flex/ActionScript×Java×Web Services/Servers
187  Download Spring Batch 11,165 ×Spring×Java×Architecture×framework
115  Download Getting Started with Infinispan 11,159 ×Database×Java×NoSQL×Open Source×XML
170  Download Camel Essential Components 10,854 ×Architecture×Java×XML
52  Download IntelliJ IDEA: Updated for 8.1 10,796 ×IDE
195  Download HTML5 IndexedDB 10,676 ×HTML5×Database
197  Download Spring Integration 10,582 ×Java×Spring×Integration
140  Download Mule 3.3: Simplifying SOA 10,333 ×SOA×Open Source×Web Services/Servers
49  Download BIRT 3.7 Report Design: Eclipse-Based BI and Big Data Visualization 10,296 ×ALM×Business Intelligence/Reporting×Eclipse×Java×Big Data
142  Download Adobe Flash Builder 4.5: Develop for Web, Desktop and Mobile 10,274 ×Flex/ActionScript×IDE
191  Download Getting Started with PhoneGap 10,237 ×Mobile×HTML5×PhoneGap
107  Download Getting Started with Griffon 10,219 ×Groovy×Open Source
132  Download Mastering Portals with a Portlet Bridge 10,046 ×Architecture×Content Management×Design/UX×Java×Standards
121  Download Open Source Media Framework: Building Simple Custom Video Players 9,952 ×Design/UX×Flex/ActionScript×Video/Animation
175  Download Core Dart: The Next-Generation Client-Side Web Programming Language 9,848 ×JavaScript
91  Download Getting Started with Adobe Flash Builder 4 9,717 ×Flex/ActionScript×IDE
53  Download Getting Started with db4o: Persisting .NET Object Data 9,425 ×.NET×Database
66  Download Getting Started with ColdFusion 9 9,202 ×ColdFusion
127  Download Developing a Silverlight Application for Windows Phone 7 9,066 ×.NET×Windows Phone
73  Download Getting Started with LiveCycle Data Services ES 8,962 ×Database×E-Commerce×Flex/ActionScript×Java
179  Download Sencha Touch 8,911 ×HTML×JavaScript×Android
188  Download Business Rules Management with Drools 8,770 ×Java×BPM
181  Download Binary Repository Management: Patterns for Performance, Security, and Traceability 8,138 ×DevOps×ALM
176  Download Essential Couchbase APIs: Open Source NoSQL Data Access from Java, Ruby, and .NET 7,731 ×Database×Java×.NET×Ruby
88  Download Getting Started with Caucho Resin 7,083 ×Java×Standards×Web Services/Servers
201  Download Reactive Programming with Akka 6,876 ×Scala×Java×Akka
113  Download Getting Started with Adobe Flash Catalyst 6,581 ×Design/UX×Flex/ActionScript
116  Download Adobe ColdFusion Web Services for PHP Programmers 5,911 ×ColdFusion×PHP×Web Services/Servers
96  Download Getting Started with PHP and Flex 5,694 ×Flex/ActionScript×PHP
103  Download Leveraging ColdFusion 9 Exposed Services from Java 5,360 ×ColdFusion×Java×Web Services/Servers
90  Download Getting Started with Adobe ColdFusion Builder 5,306 ×ColdFusion×IDE
202  Download Getting Started with Play Framework 4,963 ×Play×Java×Scala
204  Download Apache Spark 4,872 ×Big Data×NoSQL
143  Download ColdFusion Builder 2: Faster Coding, Less Errors 4,126 ×ColdFusion×IDE
190  Download Essential PostGIS 3,881 ×PostGIS×Geodata