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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 164,149 ×Architecture
2  Download Getting Started with Ajax 93,958 ×HTML×JavaScript×Web Services/Servers
4  Download Spring Configuration 93,045 ×Java×XML
24  Download Core Java 84,038 ×Algorithms×Java×Standards
7  Download jQuery Selectors 83,514 ×CSS×JavaScript
19  Download Core CSS: Part I 80,801 ×CSS
94  Download Getting Started with Git 80,278 ×ALM×Open Source
61  Download Core Java Concurrency 77,638 ×Algorithms×Java
3  Download Getting Started with Eclipse 66,594 ×ALM×Eclipse×IDE
25  Download Core CSS: Part II 65,718 ×CSS
5  Download Windows PowerShell 63,863 ×.NET×Windows
29  Download Essential Admin for MySQL 5.5 63,753 ×Database×Open Source
123  Download HTML5: New Standards for Web Interactivity 63,439 ×HTML×Standards
34  Download Core CSS: Part III 60,606 ×CSS
50  Download Scrum 60,548 ×Agile/Methodologies
26  Download Spring Annotations 59,094 ×Java
112  Download Getting Started with UML 57,403 ×ALM×Architecture×Open Source
129  Download REST: Foundations of RESTful Architecture 56,349 ×Standards×Web Services/Servers
64  Download Core HTML 54,415 ×HTML
16  Download C# 53,809 ×.NET×C#
55  Download Apache Maven 2 51,696 ×ALM×Java×Open Source
28  Download JUnit and EasyMock 50,083 ×ALM×Java
38  Download SOA Patterns 48,413 ×Architecture×SOA×Web Services/Servers
35  Download Using XML in Java 47,667 ×Java×XML
22  Download Getting Started with JPA 47,570 ×Database×Java×Standards
76  Download Getting Started with Domain-Driven Design 46,725 ×Agile/Methodologies×Architecture
95  Download Getting Started with Java GUI Development 43,847 ×Design/UX×Java
6  Download Dependency Injection in EJB 3 42,784 ×Java×Standards×XML
21  Download JavaServer Faces 41,863 ×Design/UX×Java×Standards×XML
84  Download Continuous Integration: Patterns and Anti-patterns 41,582 ×ALM
130  Download Designing Quality Software: Architectural and Technical Best Practices 39,981 ×Architecture
58  Download JavaServer Faces 2.0 39,859 ×Java×Standards
82  Download Getting Started with Cloud Computing 39,541 ×Cloud
15  Download Groovy 39,286 ×Groovy×Java
101  Download JDBC Best Practices 38,726 ×Architecture×Database×Java×Standards
117  Download Getting Started with Apache Hadoop 35,355 ×Architecture×Big Data×Database×Open Source
145  Download Continuous Delivery: Patterns and Antipatterns in the Software Lifecycle 34,878 ×Agile/Methodologies×ALM×DevOps
79  Download Google App Engine for Java 34,681 ×Cloud×Java
141  Download Node.js: Building for Scalability with Server-Side JavaScript 34,352 ×JavaScript×Open Source
43  Download Scalability & High Availability 34,165 ×Architecture×Big Data×Database
151  Download HTML5 Canvas: A Web Standard for Dynamic Graphics 33,472 ×HTML×Standards×JavaScript
18  Download Core .NET 33,158 ×.NET×C#
32  Download Getting Started with Hibernate Search 32,901 ×Database×Java×Search
105  Download Getting Started with NoSQL and Data Scalability 32,861 ×Big Data×Database×NoSQL
20  Download Struts2 32,765 ×Design/UX×Java×Open Source
174  Download Object-Oriented JavaScript: Advanced Techniques for Serious Web Applications 32,094 ×JavaScript
173  Download Core JSON: The Fat Free Alternative to XML 31,555 ×JavaScript
33  Download Essential JSP Expression Language 31,350 ×Java×Standards
30  Download Essential Ruby 30,949 ×Ruby
98  Download Getting Started with Maven Repository Management 30,831 ×ALM×Java
85  Download Vaadin: A Familiar Way to Build Web Apps with Java 30,523 ×Design/UX×Java×JavaScript
99  Download Getting Started with Java EE Security 30,457 ×Java×Security×Standards
74  Download Agile Adoption: Improving Software Quality 30,425 ×Agile/Methodologies×Architecture
86  Download Spring Web Flow 29,770 ×Design/UX×E-Commerce×IDE×Java
150  Download Java Enterprise Edition 6: The Most Elegant Enterprise Java yet 29,631 ×Java
108  Download Getting Started with Firebug 1.5 29,196 ×ALM×CSS×HTML×JavaScript
83  Download Contexts and Dependency Injection for the Java EE Platform 28,393 ×Java×Standards
110  Download Objective-C for the iPhone and iPad 28,156 ×C/C++×iOS
1  Download GWT Style, Configuration and JSNI Reference 27,723 ×Java×JavaScript
71  Download Essential PostgreSQL 27,649 ×Database×Open Source
119  Download Getting Started with Application Lifecycle Management 27,420 ×ALM
152  Download HTML5 WebSocket: Full-duplex Real-time Web Communication 27,409 ×HTML×Standards×JavaScript
155  Download Mockito: A Simple, Intuitive Mocking Framework 27,209 ×Java×Agile/Methodologies
109  Download Getting Started with Kanban for Software Development 27,000 ×Agile/Methodologies
104  Download Getting Started with Apache Ant 26,765 ×ALM×Java×Open Source×XML
17  Download Very First Steps in Flex 26,665 ×Flex/ActionScript×Java×Web Services/Servers
87  Download Continuous Integration: Servers and Tools 26,617 ×ALM×Open Source
14  Download NetBeans IDE 7: Programming in Java 7 26,501 ×IDE×Java×NetBeans
128  Download What's New in JPA 2.0 26,246 ×Database×Java×Standards
166  Download Patterns of Modular Architecture 25,868 ×Architecture×Java×Eclipse
172  Download HTTP: The Hypertext Transfer Protocol 25,708 ×Web Services/Servers×Standards
67  Download Getting Started with Selenium 24,603 ×ALM×JavaScript×Open Source
54  Download Agile Adoption: Reducing Cost 24,541 ×Agile/Methodologies
139  Download Spring Roo: Making Java Fun Again 24,411 ×IDE×Java
13  Download RSS and Atom 24,137 ×Content Management×Web Services/Servers
196  Download Regular Expressions 24,108 ×Algorithms×Patterns×Search
51  Download Effective Process Modeling with BPM & BPMN 24,074 ×Agile/Methodologies×Other Languages
147  Download Eclipse Tools for Spring: The SpringSource Tool Suite 23,913 ×Eclipse×IDE×Java
171  Download MongoDB 23,599 ×Architecture×NoSQL×Database
46  Download Core ASP.NET 23,553 ×.NET×C#
59  Download Getting Started with Drupal 7 23,458 ×PHP×Content Management×Drupal
93  Download Getting Started with Lean Software Development 23,420 ×Agile/Methodologies
118  Download Getting Started with Visual Studio 2010 23,216 ×.NET×C#×IDE
164  Download Getting Started with Scala 23,062 ×JVM×Java×Scala
57  Download Getting Started with Spring-DM 22,998 ×Architecture×Java
120  Download Apache Solr: Getting Optimal Search Results 22,944 ×Algorithms×Search×Web Services/Servers×XML
44  Download JBoss RichFaces 22,773 ×Java×Standards×XML
78  Download Getting Started with Virtualization 22,706 ×.NET×Virtualization
56  Download Getting Started with JavaFX 22,615 ×Java
45  Download Agile Adoption: Decreasing Time to Market 22,562 ×Agile/Methodologies×ALM
168  Download Refactoring Patterns 22,026 ×Architecture×Java×
60  Download Getting Started with Grails 21,639 ×Groovy
106  Download Expression-Based Authorization with Spring Security 3 21,453 ×Java×Security×XML
125  Download Selenium 2.0: Using the WebDriver API to Create Robust User Acceptance Tests 21,315 ×ALM×JavaScript×Open Source
198  Download Java Enterprise Edition 7: Streamlining Modern Java Development 21,094 ×Java
165  Download Deployment Automation Patterns 20,978 ×Agile/Methodologies×ALM×DevOps
114  Download Application Prototyping with SketchFlow 20,818 ×.NET×ALM×Design/UX
11  Download IntelliJ IDEA 20,805 ×ALM×IDE
135  Download The MVVM Design Pattern: A Formula for Elegant, Maintainable Mobile Apps 20,758 ×.NET×Architecture×Windows Phone
97  Download Getting Started with JBoss Enterprise Application Platform 5 20,557 ×ALM×Java×Standards
158  Download Big Data Machine Learning: Patterns for Predictive Analytics 20,104 ×Algorithms×Database×Big Data
169  Download Essential Apache HTTP Server 19,791 ×Web Services/Servers×LAMP
111  Download Getting Started with Windows Communication Foundation 4.0 19,684 ×.NET×Web Services/Servers
62  Download Getting Started with Eclipse RCP 19,648 ×Eclipse×IDE
178  Download Git Patterns and Anti-Patterns: Scaling from Workgroup to Enterprise 19,329 ×ALM×Open Source
70  Download Eclipse Plug-in Development 19,139 ×Eclipse
126  Download Liferay Essentials: A Definitive Guide for Enterprise Portal Development 18,654 ×Content Management×Design/UX×Java
102  Download Flex 4 and Spring 3 Integration 18,549 ×Flex/ActionScript×Java×Web Services/Servers×XML
144  Download EclipseLink JPA: An Advanced ORM Persistence Framework 18,507 ×Database×Eclipse×Java
41  Download SOA Governance 18,492 ×SOA
133  Download Apache Hadoop Deployment: A Blueprint for Reliable Distributed Computing 18,347 ×Algorithms×Architecture×Big Data×Database×Open Source
177  Download HTML5 Web Workers: Multithreaded JavaScript for High-Performance Web Applications 18,306 ×HTML×Javascript×Architecture
37  Download Getting Started with Equinox and OSGi 18,187 ×Architecture×Eclipse×Java
163  Download Code Gems for Android Developers: Working with the World's Most Popular Mobile OS 18,152 ×Java×Android
137  Download Understanding Lucene: Powering Better Search Results 18,080 ×Algorithms×Java×Search×XML
72  Download Getting Started with Windows Presentation Foundation 18,077 ×.NET×Design/UX
27  Download Getting Started with MyEclipse 18,067 ×Eclipse×IDE×Java
12  Download Getting Started with GlassFish Application Server v3 18,061 ×Java×Standards×Web Services/Servers
31  Download Core Seam 17,862 ×Java×Security×XML
10  Download Silverlight 2 17,706 ×.NET×C#×Design/UX
148  Download Mastering Portal UI Development With Vaadin and Liferay 17,684 ×Content Management×Design/UX×Java
63  Download Getting Started with Apache Wicket 17,677 ×Design/UX×Java×Open Source
48  Download Flex & Spring Integration 17,416 ×Flex/ActionScript×Java×XML
200  Download Java Performance Optimization 17,233 ×Java×Performance×JVM
153  Download Apache Cassandra: A Fault-Tolerant, Massively Scalable NoSQL Database 17,148 ×Database×NoSQL
138  Download RichFaces 4.0: A Next Generation JSF Framework 17,086 ×
69  Download Getting Started with ASP.NET MVC 1.0 17,078 ×.NET
192  Download CSS3: Basics 17,050 ×CSS×CSS3×Web Design
186  Download HTML5 Mobile Development 16,837 ×HTML×HTML5
80  Download NetBeans Platform 7.0: A Framework for Building Pluggable Enterprise Applications 16,300 ×IDE×Java
162  Download Java Profiling with VisualVM: X-Ray Vision for Dramatic Performance Gains 16,140 ×Java
154  Download Jetty: A Lightweight, Open-Source Web Server and Servlet Container 16,134 ×Java×Web Services/Servers
199  Download Debugging JavaScript 15,963 ×JavaScript
131  Download ADO.NET Entity Framework: Object-Relational Mapping and Data Access 15,774 ×.NET×Database×IDE
193  Download Core Python 15,759 ×Python×Core
47  Download The Top Twelve Integration Patterns for Apache Camel 15,475 ×Architecture×Java×XML
81  Download Essential F# 15,444 ×.NET×Other Languages
167  Download Software Configuration Management Patterns 15,441 ×Architecture×Agile
39  Download Essential EMF 15,410 ×Architecture×Eclipse×Java×Other Languages×XML
122  Download Functional Programming with Clojure: Simple Concurrency on the JVM 15,223 ×Clojure×Java
42  Download Seam UI 15,214 ×Design/UX×Java×Standards
77  Download Core WS-BPEL: Business Process Execution Language 14,918 ×Agile/Methodologies×Other Languages×Standards
124  Download PHPUnit: PHP Test-Driven Development - Automated Tools to Improve Your PHP Code Quality 14,609 ×ALM×PHP
36  Download Core Mule 14,563 ×Architecture×Open Source×SOA
89  Download Getting Started with the Zend Framework 14,517 ×IDE×Open Source×PHP
100  Download Getting Started with Fitnesse 14,437 ×ALM
184  Download Core Spring Data 14,422 ×Database×Java×Architecture×NoSQL
136  Download WebMatrix: Advanced Web Development Made Simple 14,110 ×.NET×Content Management×E-Commerce×PHP×Windows
146  Download Flex Mobile Development: Build Apps for Android, iOS, and BlackBerry Tablet OS 14,108 ×Android×Flex/ActionScript×IDE×iOS
92  Download Getting Started with Silverlight and Expression Blend 14,100 ×.NET×C#×Design/UX×IDE
157  Download Database Partitioning with MySQL: Improving Performance, Availability, and Manageability 13,953 ×Database×Open Source
9  Download Flexible Rails: Flex 3 on Rails 2 13,890 ×Flex/ActionScript×Ruby
149  Download Chef: An Open Source Tool for Scalable Cloud and Data Center Automation 13,222 ×
189  Download Core C++ 13,073 ×C++×Core
65  Download ServiceMix 4.2: The Apache Open Source ESB 13,001 ×Architecture×Open Source×SOA×Web Services/Servers
23  Download PHP 5.4 12,972 ×PHP
182  Download Practical DNS: Managing Domains for Safety, Reliability, and Speed 12,840 ×DevOps×ALM
183  Download Data Mining: Discovering and Visualizing Patterns with Python 12,813 ×Database×Python×Architecture×Big Data
156  Download JavaFX 2.0: A Rich Client Platform for Java 12,794 ×Java×Design/UX
134  Download Cloud Computing with Windows Azure Platform 12,728 ×.NET×Cloud×Windows
161  Download Jenkins on PaaS: Continuous Integration with Jenkins for Java Projects 12,534 ×CI×Open Source×Java
40  Download Apache Tapestry 5.0 12,338 ×Design/UX×Java×Standards
194  Download Search Patterns 12,242 ×Search×Patterns
185  Download Getting Started with Subversion 12,166 ×ALM×Open Source
159  Download Apache HBase: The NoSQL Database for Hadoop and Big Data 12,158 ×Database×Big Data
180  Download Preparing for Continuous Delivery 11,992 ×Agile/Methodologies×ALM×DevOps
68  Download Getting Started with Oracle Berkeley DB 11,796 ×Database×NoSQL
160  Download Data Warehousing: Best Practices for Collecting, Storing, and Delivering Decision-Support Data 11,693 ×Database×Big Data×Business Intelligence/Reporting
75  Download Getting Started with BlazeDS 11,521 ×Flex/ActionScript×Java×Web Services/Servers
187  Download Spring Batch 11,176 ×Spring×Java×Architecture×framework
115  Download Getting Started with Infinispan 11,164 ×Database×Java×NoSQL×Open Source×XML
170  Download Camel Essential Components 10,867 ×Architecture×Java×XML
52  Download IntelliJ IDEA: Updated for 8.1 10,808 ×IDE
195  Download HTML5 IndexedDB 10,683 ×HTML5×Database
197  Download Spring Integration 10,601 ×Java×Spring×Integration
140  Download Mule 3.3: Simplifying SOA 10,338 ×SOA×Open Source×Web Services/Servers
49  Download BIRT 3.7 Report Design: Eclipse-Based BI and Big Data Visualization 10,305 ×ALM×Business Intelligence/Reporting×Eclipse×Java×Big Data
142  Download Adobe Flash Builder 4.5: Develop for Web, Desktop and Mobile 10,280 ×Flex/ActionScript×IDE
191  Download Getting Started with PhoneGap 10,246 ×Mobile×HTML5×PhoneGap
107  Download Getting Started with Griffon 10,225 ×Groovy×Open Source
132  Download Mastering Portals with a Portlet Bridge 10,053 ×Architecture×Content Management×Design/UX×Java×Standards
121  Download Open Source Media Framework: Building Simple Custom Video Players 9,958 ×Design/UX×Flex/ActionScript×Video/Animation
175  Download Core Dart: The Next-Generation Client-Side Web Programming Language 9,854 ×JavaScript
91  Download Getting Started with Adobe Flash Builder 4 9,720 ×Flex/ActionScript×IDE
53  Download Getting Started with db4o: Persisting .NET Object Data 9,432 ×.NET×Database
66  Download Getting Started with ColdFusion 9 9,206 ×ColdFusion
127  Download Developing a Silverlight Application for Windows Phone 7 9,071 ×.NET×Windows Phone
73  Download Getting Started with LiveCycle Data Services ES 8,966 ×Database×E-Commerce×Flex/ActionScript×Java
179  Download Sencha Touch 8,916 ×HTML×JavaScript×Android
188  Download Business Rules Management with Drools 8,784 ×Java×BPM
181  Download Binary Repository Management: Patterns for Performance, Security, and Traceability 8,146 ×DevOps×ALM
176  Download Essential Couchbase APIs: Open Source NoSQL Data Access from Java, Ruby, and .NET 7,744 ×Database×Java×.NET×Ruby
88  Download Getting Started with Caucho Resin 7,087 ×Java×Standards×Web Services/Servers
201  Download Reactive Programming with Akka 6,889 ×Scala×Java×Akka
113  Download Getting Started with Adobe Flash Catalyst 6,585 ×Design/UX×Flex/ActionScript
116  Download Adobe ColdFusion Web Services for PHP Programmers 5,916 ×ColdFusion×PHP×Web Services/Servers
96  Download Getting Started with PHP and Flex 5,698 ×Flex/ActionScript×PHP
103  Download Leveraging ColdFusion 9 Exposed Services from Java 5,366 ×ColdFusion×Java×Web Services/Servers
90  Download Getting Started with Adobe ColdFusion Builder 5,311 ×ColdFusion×IDE
204  Download Apache Spark 5,006 ×Big Data×NoSQL
202  Download Getting Started with Play Framework 4,978 ×Play×Java×Scala
143  Download ColdFusion Builder 2: Faster Coding, Less Errors 4,130 ×ColdFusion×IDE
190  Download Essential PostGIS 3,889 ×PostGIS×Geodata