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Refcardz

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 162,028 ×Architecture
2  Download Getting Started with Ajax 93,552 ×HTML×JavaScript×Web Services/Servers
4  Download Spring Configuration 92,492 ×Java×XML
24  Download Core Java 83,152 ×Algorithms×Java×Standards
7  Download jQuery Selectors 82,899 ×CSS×JavaScript
19  Download Core CSS: Part I 80,309 ×CSS
94  Download Getting Started with Git 79,388 ×ALM×Open Source
61  Download Core Java Concurrency 77,015 ×Algorithms×Java
3  Download Getting Started with Eclipse 66,322 ×ALM×Eclipse×IDE
25  Download Core CSS: Part II 65,296 ×CSS
5  Download Windows PowerShell 63,460 ×.NET×Windows
29  Download Essential Admin for MySQL 5.5 63,431 ×Database×Open Source
123  Download HTML5: New Standards for Web Interactivity 63,019 ×HTML×Standards
34  Download Core CSS: Part III 60,182 ×CSS
50  Download Scrum 59,920 ×Agile/Methodologies
26  Download Spring Annotations 58,322 ×Java
112  Download Getting Started with UML 56,767 ×ALM×Architecture×Open Source
129  Download REST: Foundations of RESTful Architecture 54,286 ×Standards×Web Services/Servers
64  Download Core HTML 54,107 ×HTML
16  Download C# 52,970 ×.NET×C#
55  Download Apache Maven 2 51,294 ×ALM×Java×Open Source
28  Download JUnit and EasyMock 49,640 ×ALM×Java
35  Download Using XML in Java 47,305 ×Java×XML
22  Download Getting Started with JPA 47,183 ×Database×Java×Standards
38  Download SOA Patterns 47,130 ×Architecture×SOA×Web Services/Servers
76  Download Getting Started with Domain-Driven Design 46,233 ×Agile/Methodologies×Architecture
95  Download Getting Started with Java GUI Development 43,563 ×Design/UX×Java
6  Download Dependency Injection in EJB 3 42,520 ×Java×Standards×XML
21  Download JavaServer Faces 41,622 ×Design/UX×Java×Standards×XML
84  Download Continuous Integration: Patterns and Anti-patterns 41,141 ×ALM
58  Download JavaServer Faces 2.0 39,596 ×Java×Standards
130  Download Designing Quality Software: Architectural and Technical Best Practices 39,490 ×Architecture
82  Download Getting Started with Cloud Computing 39,210 ×Cloud
15  Download Groovy 38,935 ×Groovy×Java
101  Download JDBC Best Practices 38,328 ×Architecture×Database×Java×Standards
117  Download Getting Started with Apache Hadoop 34,686 ×Architecture×Big Data×Database×Open Source
145  Download Continuous Delivery: Patterns and Antipatterns in the Software Lifecycle 34,490 ×Agile/Methodologies×ALM×DevOps
79  Download Google App Engine for Java 34,471 ×Cloud×Java
141  Download Node.js: Building for Scalability with Server-Side JavaScript 33,844 ×JavaScript×Open Source
43  Download Scalability & High Availability 33,441 ×Architecture×Big Data×Database
151  Download HTML5 Canvas: A Web Standard for Dynamic Graphics 33,258 ×HTML×Standards×JavaScript
18  Download Core .NET 32,903 ×.NET×C#
32  Download Getting Started with Hibernate Search 32,661 ×Database×Java×Search
20  Download Struts2 32,581 ×Design/UX×Java×Open Source
105  Download Getting Started with NoSQL and Data Scalability 32,369 ×Big Data×Database×NoSQL
174  Download Object-Oriented JavaScript: Advanced Techniques for Serious Web Applications 31,776 ×JavaScript
173  Download Core JSON: The Fat Free Alternative to XML 31,173 ×JavaScript
33  Download Essential JSP Expression Language 31,099 ×Java×Standards
30  Download Essential Ruby 30,716 ×Ruby
98  Download Getting Started with Maven Repository Management 30,518 ×ALM×Java
99  Download Getting Started with Java EE Security 30,144 ×Java×Security×Standards
74  Download Agile Adoption: Improving Software Quality 30,127 ×Agile/Methodologies×Architecture
85  Download Vaadin: A Familiar Way to Build Web Apps with Java 30,107 ×Design/UX×Java×JavaScript
150  Download Java Enterprise Edition 6: The Most Elegant Enterprise Java yet 29,440 ×Java
86  Download Spring Web Flow 29,418 ×Design/UX×E-Commerce×IDE×Java
108  Download Getting Started with Firebug 1.5 28,997 ×ALM×CSS×HTML×JavaScript
83  Download Contexts and Dependency Injection for the Java EE Platform 28,117 ×Java×Standards
110  Download Objective-C for the iPhone and iPad 27,982 ×C/C++×iOS
1  Download GWT Style, Configuration and JSNI Reference 27,649 ×Java×JavaScript
71  Download Essential PostgreSQL 27,379 ×Database×Open Source
119  Download Getting Started with Application Lifecycle Management 27,170 ×ALM
152  Download HTML5 WebSocket: Full-duplex Real-time Web Communication 27,003 ×HTML×Standards×JavaScript
109  Download Getting Started with Kanban for Software Development 26,702 ×Agile/Methodologies
155  Download Mockito: A Simple, Intuitive Mocking Framework 26,654 ×Java×Agile/Methodologies
104  Download Getting Started with Apache Ant 26,577 ×ALM×Java×Open Source×XML
17  Download Very First Steps in Flex 26,572 ×Flex/ActionScript×Java×Web Services/Servers
14  Download NetBeans IDE 7: Programming in Java 7 26,340 ×IDE×Java×NetBeans
87  Download Continuous Integration: Servers and Tools 26,312 ×ALM×Open Source
128  Download What's New in JPA 2.0 26,009 ×Database×Java×Standards
172  Download HTTP: The Hypertext Transfer Protocol 25,457 ×Web Services/Servers×Standards
166  Download Patterns of Modular Architecture 24,747 ×Architecture×Java×Eclipse
67  Download Getting Started with Selenium 24,363 ×ALM×JavaScript×Open Source
54  Download Agile Adoption: Reducing Cost 24,314 ×Agile/Methodologies
139  Download Spring Roo: Making Java Fun Again 24,177 ×IDE×Java
13  Download RSS and Atom 24,035 ×Content Management×Web Services/Servers
51  Download Effective Process Modeling with BPM & BPMN 23,841 ×Agile/Methodologies×Other Languages
196  Download Regular Expressions 23,723 ×Algorithms×Patterns×Search
147  Download Eclipse Tools for Spring: The SpringSource Tool Suite 23,677 ×Eclipse×IDE×Java
46  Download Core ASP.NET 23,403 ×.NET×C#
59  Download Getting Started with Drupal 7 23,319 ×PHP×Content Management×Drupal
93  Download Getting Started with Lean Software Development 23,173 ×Agile/Methodologies
118  Download Getting Started with Visual Studio 2010 23,082 ×.NET×C#×IDE
171  Download MongoDB 23,037 ×Architecture×NoSQL×Database
57  Download Getting Started with Spring-DM 22,829 ×Architecture×Java
120  Download Apache Solr: Getting Optimal Search Results 22,733 ×Algorithms×Search×Web Services/Servers×XML
164  Download Getting Started with Scala 22,718 ×JVM×Java×Scala
44  Download JBoss RichFaces 22,670 ×Java×Standards×XML
78  Download Getting Started with Virtualization 22,486 ×.NET×Virtualization
56  Download Getting Started with JavaFX 22,452 ×Java
45  Download Agile Adoption: Decreasing Time to Market 22,345 ×Agile/Methodologies×ALM
168  Download Refactoring Patterns 21,742 ×Architecture×Java×
60  Download Getting Started with Grails 21,443 ×Groovy
106  Download Expression-Based Authorization with Spring Security 3 21,147 ×Java×Security×XML
125  Download Selenium 2.0: Using the WebDriver API to Create Robust User Acceptance Tests 21,042 ×ALM×JavaScript×Open Source
165  Download Deployment Automation Patterns 20,785 ×Agile/Methodologies×ALM×DevOps
198  Download Java Enterprise Edition 7: Streamlining Modern Java Development 20,638 ×Java
114  Download Application Prototyping with SketchFlow 20,601 ×.NET×ALM×Design/UX
135  Download The MVVM Design Pattern: A Formula for Elegant, Maintainable Mobile Apps 20,496 ×.NET×Architecture×Windows Phone
11  Download IntelliJ IDEA 20,475 ×ALM×IDE
97  Download Getting Started with JBoss Enterprise Application Platform 5 20,409 ×ALM×Java×Standards
158  Download Big Data Machine Learning: Patterns for Predictive Analytics 19,617 ×Algorithms×Database×Big Data
169  Download Essential Apache HTTP Server 19,577 ×Web Services/Servers×LAMP
111  Download Getting Started with Windows Communication Foundation 4.0 19,565 ×.NET×Web Services/Servers
62  Download Getting Started with Eclipse RCP 19,540 ×Eclipse×IDE
178  Download Git Patterns and Anti-Patterns: Scaling from Workgroup to Enterprise 19,108 ×ALM×Open Source
70  Download Eclipse Plug-in Development 19,005 ×Eclipse
102  Download Flex 4 and Spring 3 Integration 18,462 ×Flex/ActionScript×Java×Web Services/Servers×XML
126  Download Liferay Essentials: A Definitive Guide for Enterprise Portal Development 18,454 ×Content Management×Design/UX×Java
144  Download EclipseLink JPA: An Advanced ORM Persistence Framework 18,293 ×Database×Eclipse×Java
41  Download SOA Governance 18,264 ×SOA
177  Download HTML5 Web Workers: Multithreaded JavaScript for High-Performance Web Applications 18,111 ×HTML×Javascript×Architecture
133  Download Apache Hadoop Deployment: A Blueprint for Reliable Distributed Computing 18,061 ×Algorithms×Architecture×Big Data×Database×Open Source
37  Download Getting Started with Equinox and OSGi 18,058 ×Architecture×Eclipse×Java
12  Download Getting Started with GlassFish Application Server v3 17,983 ×Java×Standards×Web Services/Servers
163  Download Code Gems for Android Developers: Working with the World's Most Popular Mobile OS 17,961 ×Java×Android
72  Download Getting Started with Windows Presentation Foundation 17,957 ×.NET×Design/UX
27  Download Getting Started with MyEclipse 17,928 ×Eclipse×IDE×Java
137  Download Understanding Lucene: Powering Better Search Results 17,882 ×Algorithms×Java×Search×XML
31  Download Core Seam 17,785 ×Java×Security×XML
10  Download Silverlight 2 17,649 ×.NET×C#×Design/UX
63  Download Getting Started with Apache Wicket 17,552 ×Design/UX×Java×Open Source
148  Download Mastering Portal UI Development With Vaadin and Liferay 17,371 ×Content Management×Design/UX×Java
48  Download Flex & Spring Integration 17,360 ×Flex/ActionScript×Java×XML
69  Download Getting Started with ASP.NET MVC 1.0 16,988 ×.NET
138  Download RichFaces 4.0: A Next Generation JSF Framework 16,954 ×
192  Download CSS3: Basics 16,799 ×CSS×CSS3×Web Design
153  Download Apache Cassandra: A Fault-Tolerant, Massively Scalable NoSQL Database 16,701 ×Database×NoSQL
186  Download HTML5 Mobile Development 16,661 ×HTML×HTML5
200  Download Java Performance Optimization 16,646 ×Java×Performance×JVM
80  Download NetBeans Platform 7.0: A Framework for Building Pluggable Enterprise Applications 16,179 ×IDE×Java
162  Download Java Profiling with VisualVM: X-Ray Vision for Dramatic Performance Gains 15,990 ×Java
154  Download Jetty: A Lightweight, Open-Source Web Server and Servlet Container 15,887 ×Java×Web Services/Servers
131  Download ADO.NET Entity Framework: Object-Relational Mapping and Data Access 15,620 ×.NET×Database×IDE
199  Download Debugging JavaScript 15,517 ×JavaScript
193  Download Core Python 15,394 ×Python×Core
81  Download Essential F# 15,336 ×.NET×Other Languages
39  Download Essential EMF 15,271 ×Architecture×Eclipse×Java×Other Languages×XML
167  Download Software Configuration Management Patterns 15,267 ×Architecture×Agile
47  Download The Top Twelve Integration Patterns for Apache Camel 15,193 ×Architecture×Java×XML
42  Download Seam UI 15,114 ×Design/UX×Java×Standards
122  Download Functional Programming with Clojure: Simple Concurrency on the JVM 15,039 ×Clojure×Java
77  Download Core WS-BPEL: Business Process Execution Language 14,795 ×Agile/Methodologies×Other Languages×Standards
124  Download PHPUnit: PHP Test-Driven Development - Automated Tools to Improve Your PHP Code Quality 14,498 ×ALM×PHP
89  Download Getting Started with the Zend Framework 14,417 ×IDE×Open Source×PHP
36  Download Core Mule 14,406 ×Architecture×Open Source×SOA
100  Download Getting Started with Fitnesse 14,312 ×ALM
184  Download Core Spring Data 14,183 ×Database×Java×Architecture×NoSQL
92  Download Getting Started with Silverlight and Expression Blend 14,042 ×.NET×C#×Design/UX×IDE
146  Download Flex Mobile Development: Build Apps for Android, iOS, and BlackBerry Tablet OS 14,009 ×Android×Flex/ActionScript×IDE×iOS
136  Download WebMatrix: Advanced Web Development Made Simple 13,958 ×.NET×Content Management×E-Commerce×PHP×Windows
9  Download Flexible Rails: Flex 3 on Rails 2 13,825 ×Flex/ActionScript×Ruby
157  Download Database Partitioning with MySQL: Improving Performance, Availability, and Manageability 13,738 ×Database×Open Source
149  Download Chef: An Open Source Tool for Scalable Cloud and Data Center Automation 13,055 ×
65  Download ServiceMix 4.2: The Apache Open Source ESB 12,845 ×Architecture×Open Source×SOA×Web Services/Servers
189  Download Core C++ 12,844 ×C++×Core
23  Download PHP 5.4 12,785 ×PHP
156  Download JavaFX 2.0: A Rich Client Platform for Java 12,652 ×Java×Design/UX
182  Download Practical DNS: Managing Domains for Safety, Reliability, and Speed 12,609 ×DevOps×ALM
183  Download Data Mining: Discovering and Visualizing Patterns with Python 12,597 ×Database×Python×Architecture×Big Data
134  Download Cloud Computing with Windows Azure Platform 12,578 ×.NET×Cloud×Windows
161  Download Jenkins on PaaS: Continuous Integration with Jenkins for Java Projects 12,326 ×CI×Open Source×Java
40  Download Apache Tapestry 5.0 12,237 ×Design/UX×Java×Standards
194  Download Search Patterns 12,045 ×Search×Patterns
185  Download Getting Started with Subversion 12,026 ×ALM×Open Source
180  Download Preparing for Continuous Delivery 11,821 ×Agile/Methodologies×ALM×DevOps
68  Download Getting Started with Oracle Berkeley DB 11,701 ×Database×NoSQL
159  Download Apache HBase: The NoSQL Database for Hadoop and Big Data 11,611 ×Database×Big Data
160  Download Data Warehousing: Best Practices for Collecting, Storing, and Delivering Decision-Support Data 11,511 ×Database×Big Data×Business Intelligence/Reporting
75  Download Getting Started with BlazeDS 11,456 ×Flex/ActionScript×Java×Web Services/Servers
115  Download Getting Started with Infinispan 11,040 ×Database×Java×NoSQL×Open Source×XML
187  Download Spring Batch 10,906 ×Spring×Java×Architecture×framework
52  Download IntelliJ IDEA: Updated for 8.1 10,679 ×IDE
170  Download Camel Essential Components 10,614 ×Architecture×Java×XML
195  Download HTML5 IndexedDB 10,503 ×HTML5×Database
197  Download Spring Integration 10,242 ×Java×Spring×Integration
142  Download Adobe Flash Builder 4.5: Develop for Web, Desktop and Mobile 10,221 ×Flex/ActionScript×IDE
140  Download Mule 3.3: Simplifying SOA 10,207 ×SOA×Open Source×Web Services/Servers
49  Download BIRT 3.7 Report Design: Eclipse-Based BI and Big Data Visualization 10,140 ×ALM×Business Intelligence/Reporting×Eclipse×Java×Big Data
107  Download Getting Started with Griffon 10,134 ×Groovy×Open Source
191  Download Getting Started with PhoneGap 10,111 ×Mobile×HTML5×PhoneGap
132  Download Mastering Portals with a Portlet Bridge 9,935 ×Architecture×Content Management×Design/UX×Java×Standards
121  Download Open Source Media Framework: Building Simple Custom Video Players 9,861 ×Design/UX×Flex/ActionScript×Video/Animation
175  Download Core Dart: The Next-Generation Client-Side Web Programming Language 9,769 ×JavaScript
91  Download Getting Started with Adobe Flash Builder 4 9,681 ×Flex/ActionScript×IDE
53  Download Getting Started with db4o: Persisting .NET Object Data 9,375 ×.NET×Database
66  Download Getting Started with ColdFusion 9 9,165 ×ColdFusion
127  Download Developing a Silverlight Application for Windows Phone 7 9,030 ×.NET×Windows Phone
73  Download Getting Started with LiveCycle Data Services ES 8,905 ×Database×E-Commerce×Flex/ActionScript×Java
179  Download Sencha Touch 8,828 ×HTML×JavaScript×Android
188  Download Business Rules Management with Drools 8,594 ×Java×BPM
181  Download Binary Repository Management: Patterns for Performance, Security, and Traceability 8,041 ×DevOps×ALM
176  Download Essential Couchbase APIs: Open Source NoSQL Data Access from Java, Ruby, and .NET 7,606 ×Database×Java×.NET×Ruby
88  Download Getting Started with Caucho Resin 7,022 ×Java×Standards×Web Services/Servers
113  Download Getting Started with Adobe Flash Catalyst 6,542 ×Design/UX×Flex/ActionScript
201  Download Reactive Programming with Akka 6,506 ×Scala×Java×Akka
116  Download Adobe ColdFusion Web Services for PHP Programmers 5,873 ×ColdFusion×PHP×Web Services/Servers
96  Download Getting Started with PHP and Flex 5,656 ×Flex/ActionScript×PHP
103  Download Leveraging ColdFusion 9 Exposed Services from Java 5,327 ×ColdFusion×Java×Web Services/Servers
90  Download Getting Started with Adobe ColdFusion Builder 5,269 ×ColdFusion×IDE
202  Download Getting Started with Play Framework 4,628 ×Play×Java×Scala
143  Download ColdFusion Builder 2: Faster Coding, Less Errors 4,093 ×ColdFusion×IDE
190  Download Essential PostGIS 3,781 ×PostGIS×Geodata