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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 161,409 ×Architecture
2  Download Getting Started with Ajax 93,408 ×HTML×JavaScript×Web Services/Servers
4  Download Spring Configuration 92,326 ×Java×XML
24  Download Core Java 82,871 ×Algorithms×Java×Standards
7  Download jQuery Selectors 82,695 ×CSS×JavaScript
19  Download Core CSS: Part I 80,147 ×CSS
94  Download Getting Started with Git 79,141 ×ALM×Open Source
61  Download Core Java Concurrency 76,862 ×Algorithms×Java
3  Download Getting Started with Eclipse 66,203 ×ALM×Eclipse×IDE
25  Download Core CSS: Part II 65,135 ×CSS
29  Download Essential Admin for MySQL 5.5 63,355 ×Database×Open Source
5  Download Windows PowerShell 63,340 ×.NET×Windows
123  Download HTML5: New Standards for Web Interactivity 62,883 ×HTML×Standards
34  Download Core CSS: Part III 60,038 ×CSS
50  Download Scrum 59,724 ×Agile/Methodologies
26  Download Spring Annotations 58,112 ×Java
112  Download Getting Started with UML 56,614 ×ALM×Architecture×Open Source
129  Download REST: Foundations of RESTful Architecture 54,090 ×Standards×Web Services/Servers
64  Download Core HTML 53,997 ×HTML
16  Download C# 51,911 ×.NET×C#
55  Download Apache Maven 2 51,173 ×ALM×Java×Open Source
28  Download JUnit and EasyMock 49,532 ×ALM×Java
35  Download Using XML in Java 47,211 ×Java×XML
22  Download Getting Started with JPA 47,085 ×Database×Java×Standards
38  Download SOA Patterns 46,966 ×Architecture×SOA×Web Services/Servers
76  Download Getting Started with Domain-Driven Design 46,106 ×Agile/Methodologies×Architecture
95  Download Getting Started with Java GUI Development 43,498 ×Design/UX×Java
6  Download Dependency Injection in EJB 3 42,453 ×Java×Standards×XML
21  Download JavaServer Faces 41,573 ×Design/UX×Java×Standards×XML
84  Download Continuous Integration: Patterns and Anti-patterns 41,034 ×ALM
58  Download JavaServer Faces 2.0 39,514 ×Java×Standards
130  Download Designing Quality Software: Architectural and Technical Best Practices 39,386 ×Architecture
82  Download Getting Started with Cloud Computing 39,136 ×Cloud
15  Download Groovy 38,841 ×Groovy×Java
101  Download JDBC Best Practices 38,230 ×Architecture×Database×Java×Standards
117  Download Getting Started with Apache Hadoop 34,558 ×Architecture×Big Data×Database×Open Source
79  Download Google App Engine for Java 34,414 ×Cloud×Java
145  Download Continuous Delivery: Patterns and Antipatterns in the Software Lifecycle 34,366 ×Agile/Methodologies×ALM×DevOps
141  Download Node.js: Building for Scalability with Server-Side JavaScript 33,737 ×JavaScript×Open Source
43  Download Scalability & High Availability 33,334 ×Architecture×Big Data×Database
151  Download HTML5 Canvas: A Web Standard for Dynamic Graphics 33,190 ×HTML×Standards×JavaScript
18  Download Core .NET 32,794 ×.NET×C#
32  Download Getting Started with Hibernate Search 32,592 ×Database×Java×Search
20  Download Struts2 32,538 ×Design/UX×Java×Open Source
105  Download Getting Started with NoSQL and Data Scalability 32,255 ×Big Data×Database×NoSQL
174  Download Object-Oriented JavaScript: Advanced Techniques for Serious Web Applications 31,666 ×JavaScript
173  Download Core JSON: The Fat Free Alternative to XML 31,056 ×JavaScript
33  Download Essential JSP Expression Language 31,045 ×Java×Standards
30  Download Essential Ruby 30,637 ×Ruby
98  Download Getting Started with Maven Repository Management 30,451 ×ALM×Java
99  Download Getting Started with Java EE Security 30,060 ×Java×Security×Standards
74  Download Agile Adoption: Improving Software Quality 30,051 ×Agile/Methodologies×Architecture
85  Download Vaadin: A Familiar Way to Build Web Apps with Java 29,987 ×Design/UX×Java×JavaScript
150  Download Java Enterprise Edition 6: The Most Elegant Enterprise Java yet 29,379 ×Java
86  Download Spring Web Flow 29,339 ×Design/UX×E-Commerce×IDE×Java
108  Download Getting Started with Firebug 1.5 28,945 ×ALM×CSS×HTML×JavaScript
83  Download Contexts and Dependency Injection for the Java EE Platform 28,049 ×Java×Standards
110  Download Objective-C for the iPhone and iPad 27,944 ×C/C++×iOS
1  Download GWT Style, Configuration and JSNI Reference 27,621 ×Java×JavaScript
71  Download Essential PostgreSQL 27,309 ×Database×Open Source
119  Download Getting Started with Application Lifecycle Management 27,114 ×ALM
152  Download HTML5 WebSocket: Full-duplex Real-time Web Communication 26,906 ×HTML×Standards×JavaScript
109  Download Getting Started with Kanban for Software Development 26,609 ×Agile/Methodologies
17  Download Very First Steps in Flex 26,550 ×Flex/ActionScript×Java×Web Services/Servers
104  Download Getting Started with Apache Ant 26,531 ×ALM×Java×Open Source×XML
155  Download Mockito: A Simple, Intuitive Mocking Framework 26,469 ×Java×Agile/Methodologies
14  Download NetBeans IDE 7: Programming in Java 7 26,288 ×IDE×Java×NetBeans
87  Download Continuous Integration: Servers and Tools 26,251 ×ALM×Open Source
128  Download What's New in JPA 2.0 25,942 ×Database×Java×Standards
172  Download HTTP: The Hypertext Transfer Protocol 25,387 ×Web Services/Servers×Standards
166  Download Patterns of Modular Architecture 24,664 ×Architecture×Java×Eclipse
67  Download Getting Started with Selenium 24,286 ×ALM×JavaScript×Open Source
54  Download Agile Adoption: Reducing Cost 24,263 ×Agile/Methodologies
139  Download Spring Roo: Making Java Fun Again 24,132 ×IDE×Java
13  Download RSS and Atom 24,011 ×Content Management×Web Services/Servers
51  Download Effective Process Modeling with BPM & BPMN 23,783 ×Agile/Methodologies×Other Languages
147  Download Eclipse Tools for Spring: The SpringSource Tool Suite 23,612 ×Eclipse×IDE×Java
196  Download Regular Expressions 23,603 ×Algorithms×Patterns×Search
46  Download Core ASP.NET 23,315 ×.NET×C#
59  Download Getting Started with Drupal 7 23,285 ×PHP×Content Management×Drupal
93  Download Getting Started with Lean Software Development 23,121 ×Agile/Methodologies
118  Download Getting Started with Visual Studio 2010 23,017 ×.NET×C#×IDE
57  Download Getting Started with Spring-DM 22,788 ×Architecture×Java
171  Download MongoDB 22,691 ×Architecture×NoSQL×Database
120  Download Apache Solr: Getting Optimal Search Results 22,683 ×Algorithms×Search×Web Services/Servers×XML
44  Download JBoss RichFaces 22,639 ×Java×Standards×XML
164  Download Getting Started with Scala 22,594 ×JVM×Java×Scala
78  Download Getting Started with Virtualization 22,446 ×.NET×Virtualization
56  Download Getting Started with JavaFX 22,410 ×Java
45  Download Agile Adoption: Decreasing Time to Market 22,290 ×Agile/Methodologies×ALM
168  Download Refactoring Patterns 21,651 ×Architecture×Java×
60  Download Getting Started with Grails 21,406 ×Groovy
106  Download Expression-Based Authorization with Spring Security 3 21,073 ×Java×Security×XML
125  Download Selenium 2.0: Using the WebDriver API to Create Robust User Acceptance Tests 20,955 ×ALM×JavaScript×Open Source
165  Download Deployment Automation Patterns 20,707 ×Agile/Methodologies×ALM×DevOps
114  Download Application Prototyping with SketchFlow 20,551 ×.NET×ALM×Design/UX
198  Download Java Enterprise Edition 7: Streamlining Modern Java Development 20,533 ×Java
135  Download The MVVM Design Pattern: A Formula for Elegant, Maintainable Mobile Apps 20,420 ×.NET×Architecture×Windows Phone
11  Download IntelliJ IDEA 20,392 ×ALM×IDE
97  Download Getting Started with JBoss Enterprise Application Platform 5 20,379 ×ALM×Java×Standards
169  Download Essential Apache HTTP Server 19,521 ×Web Services/Servers×LAMP
111  Download Getting Started with Windows Communication Foundation 4.0 19,521 ×.NET×Web Services/Servers
62  Download Getting Started with Eclipse RCP 19,509 ×Eclipse×IDE
158  Download Big Data Machine Learning: Patterns for Predictive Analytics 19,501 ×Algorithms×Database×Big Data
178  Download Git Patterns and Anti-Patterns: Scaling from Workgroup to Enterprise 19,034 ×ALM×Open Source
70  Download Eclipse Plug-in Development 18,961 ×Eclipse
102  Download Flex 4 and Spring 3 Integration 18,435 ×Flex/ActionScript×Java×Web Services/Servers×XML
126  Download Liferay Essentials: A Definitive Guide for Enterprise Portal Development 18,412 ×Content Management×Design/UX×Java
144  Download EclipseLink JPA: An Advanced ORM Persistence Framework 18,238 ×Database×Eclipse×Java
41  Download SOA Governance 18,224 ×SOA
37  Download Getting Started with Equinox and OSGi 18,028 ×Architecture×Eclipse×Java
177  Download HTML5 Web Workers: Multithreaded JavaScript for High-Performance Web Applications 18,027 ×HTML×Javascript×Architecture
133  Download Apache Hadoop Deployment: A Blueprint for Reliable Distributed Computing 17,999 ×Algorithms×Architecture×Big Data×Database×Open Source
12  Download Getting Started with GlassFish Application Server v3 17,957 ×Java×Standards×Web Services/Servers
72  Download Getting Started with Windows Presentation Foundation 17,916 ×.NET×Design/UX
163  Download Code Gems for Android Developers: Working with the World's Most Popular Mobile OS 17,898 ×Java×Android
27  Download Getting Started with MyEclipse 17,894 ×Eclipse×IDE×Java
137  Download Understanding Lucene: Powering Better Search Results 17,844 ×Algorithms×Java×Search×XML
31  Download Core Seam 17,770 ×Java×Security×XML
10  Download Silverlight 2 17,621 ×.NET×C#×Design/UX
63  Download Getting Started with Apache Wicket 17,531 ×Design/UX×Java×Open Source
48  Download Flex & Spring Integration 17,342 ×Flex/ActionScript×Java×XML
148  Download Mastering Portal UI Development With Vaadin and Liferay 17,242 ×Content Management×Design/UX×Java
69  Download Getting Started with ASP.NET MVC 1.0 16,949 ×.NET
138  Download RichFaces 4.0: A Next Generation JSF Framework 16,908 ×
192  Download CSS3: Basics 16,692 ×CSS×CSS3×Web Design
153  Download Apache Cassandra: A Fault-Tolerant, Massively Scalable NoSQL Database 16,631 ×Database×NoSQL
186  Download HTML5 Mobile Development 16,588 ×HTML×HTML5
200  Download Java Performance Optimization 16,472 ×Java×Performance×JVM
80  Download NetBeans Platform 7.0: A Framework for Building Pluggable Enterprise Applications 16,149 ×IDE×Java
162  Download Java Profiling with VisualVM: X-Ray Vision for Dramatic Performance Gains 15,943 ×Java
154  Download Jetty: A Lightweight, Open-Source Web Server and Servlet Container 15,834 ×Java×Web Services/Servers
131  Download ADO.NET Entity Framework: Object-Relational Mapping and Data Access 15,568 ×.NET×Database×IDE
199  Download Debugging JavaScript 15,364 ×JavaScript
81  Download Essential F# 15,301 ×.NET×Other Languages
193  Download Core Python 15,285 ×Python×Core
39  Download Essential EMF 15,237 ×Architecture×Eclipse×Java×Other Languages×XML
167  Download Software Configuration Management Patterns 15,213 ×Architecture×Agile
47  Download The Top Twelve Integration Patterns for Apache Camel 15,113 ×Architecture×Java×XML
42  Download Seam UI 15,093 ×Design/UX×Java×Standards
122  Download Functional Programming with Clojure: Simple Concurrency on the JVM 14,996 ×Clojure×Java
77  Download Core WS-BPEL: Business Process Execution Language 14,756 ×Agile/Methodologies×Other Languages×Standards
124  Download PHPUnit: PHP Test-Driven Development - Automated Tools to Improve Your PHP Code Quality 14,471 ×ALM×PHP
89  Download Getting Started with the Zend Framework 14,394 ×IDE×Open Source×PHP
36  Download Core Mule 14,368 ×Architecture×Open Source×SOA
100  Download Getting Started with Fitnesse 14,270 ×ALM
184  Download Core Spring Data 14,087 ×Database×Java×Architecture×NoSQL
92  Download Getting Started with Silverlight and Expression Blend 14,019 ×.NET×C#×Design/UX×IDE
146  Download Flex Mobile Development: Build Apps for Android, iOS, and BlackBerry Tablet OS 13,978 ×Android×Flex/ActionScript×IDE×iOS
136  Download WebMatrix: Advanced Web Development Made Simple 13,920 ×.NET×Content Management×E-Commerce×PHP×Windows
9  Download Flexible Rails: Flex 3 on Rails 2 13,813 ×Flex/ActionScript×Ruby
157  Download Database Partitioning with MySQL: Improving Performance, Availability, and Manageability 13,693 ×Database×Open Source
149  Download Chef: An Open Source Tool for Scalable Cloud and Data Center Automation 13,012 ×
65  Download ServiceMix 4.2: The Apache Open Source ESB 12,810 ×Architecture×Open Source×SOA×Web Services/Servers
189  Download Core C++ 12,781 ×C++×Core
23  Download PHP 5.4 12,739 ×PHP
156  Download JavaFX 2.0: A Rich Client Platform for Java 12,613 ×Java×Design/UX
182  Download Practical DNS: Managing Domains for Safety, Reliability, and Speed 12,555 ×DevOps×ALM
134  Download Cloud Computing with Windows Azure Platform 12,543 ×.NET×Cloud×Windows
183  Download Data Mining: Discovering and Visualizing Patterns with Python 12,533 ×Database×Python×Architecture×Big Data
161  Download Jenkins on PaaS: Continuous Integration with Jenkins for Java Projects 12,262 ×CI×Open Source×Java
40  Download Apache Tapestry 5.0 12,213 ×Design/UX×Java×Standards
194  Download Search Patterns 11,995 ×Search×Patterns
185  Download Getting Started with Subversion 11,976 ×ALM×Open Source
180  Download Preparing for Continuous Delivery 11,753 ×Agile/Methodologies×ALM×DevOps
68  Download Getting Started with Oracle Berkeley DB 11,670 ×Database×NoSQL
159  Download Apache HBase: The NoSQL Database for Hadoop and Big Data 11,546 ×Database×Big Data
160  Download Data Warehousing: Best Practices for Collecting, Storing, and Delivering Decision-Support Data 11,456 ×Database×Big Data×Business Intelligence/Reporting
75  Download Getting Started with BlazeDS 11,439 ×Flex/ActionScript×Java×Web Services/Servers
115  Download Getting Started with Infinispan 11,012 ×Database×Java×NoSQL×Open Source×XML
187  Download Spring Batch 10,831 ×Spring×Java×Architecture×framework
52  Download IntelliJ IDEA: Updated for 8.1 10,649 ×IDE
170  Download Camel Essential Components 10,542 ×Architecture×Java×XML
195  Download HTML5 IndexedDB 10,441 ×HTML5×Database
142  Download Adobe Flash Builder 4.5: Develop for Web, Desktop and Mobile 10,199 ×Flex/ActionScript×IDE
140  Download Mule 3.3: Simplifying SOA 10,184 ×SOA×Open Source×Web Services/Servers
197  Download Spring Integration 10,128 ×Java×Spring×Integration
107  Download Getting Started with Griffon 10,110 ×Groovy×Open Source
49  Download BIRT 3.7 Report Design: Eclipse-Based BI and Big Data Visualization 10,101 ×ALM×Business Intelligence/Reporting×Eclipse×Java×Big Data
191  Download Getting Started with PhoneGap 10,060 ×Mobile×HTML5×PhoneGap
132  Download Mastering Portals with a Portlet Bridge 9,911 ×Architecture×Content Management×Design/UX×Java×Standards
121  Download Open Source Media Framework: Building Simple Custom Video Players 9,835 ×Design/UX×Flex/ActionScript×Video/Animation
175  Download Core Dart: The Next-Generation Client-Side Web Programming Language 9,746 ×JavaScript
91  Download Getting Started with Adobe Flash Builder 4 9,663 ×Flex/ActionScript×IDE
53  Download Getting Started with db4o: Persisting .NET Object Data 9,351 ×.NET×Database
66  Download Getting Started with ColdFusion 9 9,150 ×ColdFusion
127  Download Developing a Silverlight Application for Windows Phone 7 9,016 ×.NET×Windows Phone
73  Download Getting Started with LiveCycle Data Services ES 8,888 ×Database×E-Commerce×Flex/ActionScript×Java
179  Download Sencha Touch 8,798 ×HTML×JavaScript×Android
188  Download Business Rules Management with Drools 8,521 ×Java×BPM
181  Download Binary Repository Management: Patterns for Performance, Security, and Traceability 7,995 ×DevOps×ALM
176  Download Essential Couchbase APIs: Open Source NoSQL Data Access from Java, Ruby, and .NET 7,557 ×Database×Java×.NET×Ruby
88  Download Getting Started with Caucho Resin 7,006 ×Java×Standards×Web Services/Servers
113  Download Getting Started with Adobe Flash Catalyst 6,531 ×Design/UX×Flex/ActionScript
201  Download Reactive Programming with Akka 6,406 ×Scala×Java×Akka
116  Download Adobe ColdFusion Web Services for PHP Programmers 5,863 ×ColdFusion×PHP×Web Services/Servers
96  Download Getting Started with PHP and Flex 5,637 ×Flex/ActionScript×PHP
103  Download Leveraging ColdFusion 9 Exposed Services from Java 5,313 ×ColdFusion×Java×Web Services/Servers
90  Download Getting Started with Adobe ColdFusion Builder 5,256 ×ColdFusion×IDE
202  Download Getting Started with Play Framework 4,515 ×Play×Java×Scala
143  Download ColdFusion Builder 2: Faster Coding, Less Errors 4,080 ×ColdFusion×IDE