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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 163,652 ×Architecture
2  Download Getting Started with Ajax 93,839 ×HTML×JavaScript×Web Services/Servers
4  Download Spring Configuration 92,905 ×Java×XML
24  Download Core Java 83,838 ×Algorithms×Java×Standards
7  Download jQuery Selectors 83,344 ×CSS×JavaScript
19  Download Core CSS: Part I 80,690 ×CSS
94  Download Getting Started with Git 80,064 ×ALM×Open Source
61  Download Core Java Concurrency 77,499 ×Algorithms×Java
3  Download Getting Started with Eclipse 66,524 ×ALM×Eclipse×IDE
25  Download Core CSS: Part II 65,624 ×CSS
5  Download Windows PowerShell 63,761 ×.NET×Windows
29  Download Essential Admin for MySQL 5.5 63,676 ×Database×Open Source
123  Download HTML5: New Standards for Web Interactivity 63,346 ×HTML×Standards
34  Download Core CSS: Part III 60,499 ×CSS
50  Download Scrum 60,371 ×Agile/Methodologies
26  Download Spring Annotations 58,907 ×Java
112  Download Getting Started with UML 57,256 ×ALM×Architecture×Open Source
129  Download REST: Foundations of RESTful Architecture 55,474 ×Standards×Web Services/Servers
64  Download Core HTML 54,340 ×HTML
16  Download C# 53,670 ×.NET×C#
55  Download Apache Maven 2 51,597 ×ALM×Java×Open Source
28  Download JUnit and EasyMock 49,973 ×ALM×Java
38  Download SOA Patterns 47,846 ×Architecture×SOA×Web Services/Servers
35  Download Using XML in Java 47,563 ×Java×XML
22  Download Getting Started with JPA 47,494 ×Database×Java×Standards
76  Download Getting Started with Domain-Driven Design 46,610 ×Agile/Methodologies×Architecture
95  Download Getting Started with Java GUI Development 43,770 ×Design/UX×Java
6  Download Dependency Injection in EJB 3 42,725 ×Java×Standards×XML
21  Download JavaServer Faces 41,795 ×Design/UX×Java×Standards×XML
84  Download Continuous Integration: Patterns and Anti-patterns 41,467 ×ALM
130  Download Designing Quality Software: Architectural and Technical Best Practices 39,853 ×Architecture
58  Download JavaServer Faces 2.0 39,788 ×Java×Standards
82  Download Getting Started with Cloud Computing 39,467 ×Cloud
15  Download Groovy 39,196 ×Groovy×Java
101  Download JDBC Best Practices 38,640 ×Architecture×Database×Java×Standards
117  Download Getting Started with Apache Hadoop 35,224 ×Architecture×Big Data×Database×Open Source
145  Download Continuous Delivery: Patterns and Antipatterns in the Software Lifecycle 34,767 ×Agile/Methodologies×ALM×DevOps
79  Download Google App Engine for Java 34,632 ×Cloud×Java
141  Download Node.js: Building for Scalability with Server-Side JavaScript 34,213 ×JavaScript×Open Source
43  Download Scalability & High Availability 34,056 ×Architecture×Big Data×Database
151  Download HTML5 Canvas: A Web Standard for Dynamic Graphics 33,416 ×HTML×Standards×JavaScript
18  Download Core .NET 33,086 ×.NET×C#
32  Download Getting Started with Hibernate Search 32,842 ×Database×Java×Search
105  Download Getting Started with NoSQL and Data Scalability 32,774 ×Big Data×Database×NoSQL
20  Download Struts2 32,725 ×Design/UX×Java×Open Source
174  Download Object-Oriented JavaScript: Advanced Techniques for Serious Web Applications 32,007 ×JavaScript
173  Download Core JSON: The Fat Free Alternative to XML 31,455 ×JavaScript
33  Download Essential JSP Expression Language 31,294 ×Java×Standards
30  Download Essential Ruby 30,889 ×Ruby
98  Download Getting Started with Maven Repository Management 30,755 ×ALM×Java
85  Download Vaadin: A Familiar Way to Build Web Apps with Java 30,435 ×Design/UX×Java×JavaScript
99  Download Getting Started with Java EE Security 30,377 ×Java×Security×Standards
74  Download Agile Adoption: Improving Software Quality 30,362 ×Agile/Methodologies×Architecture
86  Download Spring Web Flow 29,677 ×Design/UX×E-Commerce×IDE×Java
150  Download Java Enterprise Edition 6: The Most Elegant Enterprise Java yet 29,579 ×Java
108  Download Getting Started with Firebug 1.5 29,150 ×ALM×CSS×HTML×JavaScript
83  Download Contexts and Dependency Injection for the Java EE Platform 28,322 ×Java×Standards
110  Download Objective-C for the iPhone and iPad 28,112 ×C/C++×iOS
1  Download GWT Style, Configuration and JSNI Reference 27,705 ×Java×JavaScript
71  Download Essential PostgreSQL 27,591 ×Database×Open Source
119  Download Getting Started with Application Lifecycle Management 27,359 ×ALM
152  Download HTML5 WebSocket: Full-duplex Real-time Web Communication 27,310 ×HTML×Standards×JavaScript
155  Download Mockito: A Simple, Intuitive Mocking Framework 27,083 ×Java×Agile/Methodologies
109  Download Getting Started with Kanban for Software Development 26,925 ×Agile/Methodologies
104  Download Getting Started with Apache Ant 26,717 ×ALM×Java×Open Source×XML
17  Download Very First Steps in Flex 26,641 ×Flex/ActionScript×Java×Web Services/Servers
87  Download Continuous Integration: Servers and Tools 26,541 ×ALM×Open Source
14  Download NetBeans IDE 7: Programming in Java 7 26,460 ×IDE×Java×NetBeans
128  Download What's New in JPA 2.0 26,192 ×Database×Java×Standards
172  Download HTTP: The Hypertext Transfer Protocol 25,633 ×Web Services/Servers×Standards
166  Download Patterns of Modular Architecture 25,316 ×Architecture×Java×Eclipse
67  Download Getting Started with Selenium 24,545 ×ALM×JavaScript×Open Source
54  Download Agile Adoption: Reducing Cost 24,480 ×Agile/Methodologies
139  Download Spring Roo: Making Java Fun Again 24,353 ×IDE×Java
13  Download RSS and Atom 24,107 ×Content Management×Web Services/Servers
196  Download Regular Expressions 24,024 ×Algorithms×Patterns×Search
51  Download Effective Process Modeling with BPM & BPMN 24,020 ×Agile/Methodologies×Other Languages
147  Download Eclipse Tools for Spring: The SpringSource Tool Suite 23,848 ×Eclipse×IDE×Java
46  Download Core ASP.NET 23,507 ×.NET×C#
171  Download MongoDB 23,479 ×Architecture×NoSQL×Database
59  Download Getting Started with Drupal 7 23,421 ×PHP×Content Management×Drupal
93  Download Getting Started with Lean Software Development 23,352 ×Agile/Methodologies
118  Download Getting Started with Visual Studio 2010 23,180 ×.NET×C#×IDE
164  Download Getting Started with Scala 22,984 ×JVM×Java×Scala
57  Download Getting Started with Spring-DM 22,958 ×Architecture×Java
120  Download Apache Solr: Getting Optimal Search Results 22,889 ×Algorithms×Search×Web Services/Servers×XML
44  Download JBoss RichFaces 22,741 ×Java×Standards×XML
78  Download Getting Started with Virtualization 22,654 ×.NET×Virtualization
56  Download Getting Started with JavaFX 22,575 ×Java
45  Download Agile Adoption: Decreasing Time to Market 22,504 ×Agile/Methodologies×ALM
168  Download Refactoring Patterns 21,949 ×Architecture×Java×
60  Download Getting Started with Grails 21,589 ×Groovy
106  Download Expression-Based Authorization with Spring Security 3 21,394 ×Java×Security×XML
125  Download Selenium 2.0: Using the WebDriver API to Create Robust User Acceptance Tests 21,252 ×ALM×JavaScript×Open Source
198  Download Java Enterprise Edition 7: Streamlining Modern Java Development 20,995 ×Java
165  Download Deployment Automation Patterns 20,935 ×Agile/Methodologies×ALM×DevOps
114  Download Application Prototyping with SketchFlow 20,769 ×.NET×ALM×Design/UX
11  Download IntelliJ IDEA 20,718 ×ALM×IDE
135  Download The MVVM Design Pattern: A Formula for Elegant, Maintainable Mobile Apps 20,683 ×.NET×Architecture×Windows Phone
97  Download Getting Started with JBoss Enterprise Application Platform 5 20,523 ×ALM×Java×Standards
158  Download Big Data Machine Learning: Patterns for Predictive Analytics 19,996 ×Algorithms×Database×Big Data
169  Download Essential Apache HTTP Server 19,739 ×Web Services/Servers×LAMP
111  Download Getting Started with Windows Communication Foundation 4.0 19,651 ×.NET×Web Services/Servers
62  Download Getting Started with Eclipse RCP 19,624 ×Eclipse×IDE
178  Download Git Patterns and Anti-Patterns: Scaling from Workgroup to Enterprise 19,265 ×ALM×Open Source
70  Download Eclipse Plug-in Development 19,101 ×Eclipse
126  Download Liferay Essentials: A Definitive Guide for Enterprise Portal Development 18,601 ×Content Management×Design/UX×Java
102  Download Flex 4 and Spring 3 Integration 18,523 ×Flex/ActionScript×Java×Web Services/Servers×XML
144  Download EclipseLink JPA: An Advanced ORM Persistence Framework 18,451 ×Database×Eclipse×Java
41  Download SOA Governance 18,421 ×SOA
133  Download Apache Hadoop Deployment: A Blueprint for Reliable Distributed Computing 18,270 ×Algorithms×Architecture×Big Data×Database×Open Source
177  Download HTML5 Web Workers: Multithreaded JavaScript for High-Performance Web Applications 18,257 ×HTML×Javascript×Architecture
37  Download Getting Started with Equinox and OSGi 18,150 ×Architecture×Eclipse×Java
163  Download Code Gems for Android Developers: Working with the World's Most Popular Mobile OS 18,104 ×Java×Android
72  Download Getting Started with Windows Presentation Foundation 18,042 ×.NET×Design/UX
12  Download Getting Started with GlassFish Application Server v3 18,036 ×Java×Standards×Web Services/Servers
27  Download Getting Started with MyEclipse 18,030 ×Eclipse×IDE×Java
137  Download Understanding Lucene: Powering Better Search Results 18,030 ×Algorithms×Java×Search×XML
31  Download Core Seam 17,838 ×Java×Security×XML
10  Download Silverlight 2 17,690 ×.NET×C#×Design/UX
63  Download Getting Started with Apache Wicket 17,644 ×Design/UX×Java×Open Source
148  Download Mastering Portal UI Development With Vaadin and Liferay 17,629 ×Content Management×Design/UX×Java
48  Download Flex & Spring Integration 17,399 ×Flex/ActionScript×Java×XML
200  Download Java Performance Optimization 17,112 ×Java×Performance×JVM
153  Download Apache Cassandra: A Fault-Tolerant, Massively Scalable NoSQL Database 17,057 ×Database×NoSQL
69  Download Getting Started with ASP.NET MVC 1.0 17,052 ×.NET
138  Download RichFaces 4.0: A Next Generation JSF Framework 17,043 ×
192  Download CSS3: Basics 16,990 ×CSS×CSS3×Web Design
186  Download HTML5 Mobile Development 16,792 ×HTML×HTML5
80  Download NetBeans Platform 7.0: A Framework for Building Pluggable Enterprise Applications 16,273 ×IDE×Java
162  Download Java Profiling with VisualVM: X-Ray Vision for Dramatic Performance Gains 16,097 ×Java
154  Download Jetty: A Lightweight, Open-Source Web Server and Servlet Container 16,070 ×Java×Web Services/Servers
199  Download Debugging JavaScript 15,846 ×JavaScript
131  Download ADO.NET Entity Framework: Object-Relational Mapping and Data Access 15,732 ×.NET×Database×IDE
193  Download Core Python 15,679 ×Python×Core
81  Download Essential F# 15,412 ×.NET×Other Languages
47  Download The Top Twelve Integration Patterns for Apache Camel 15,393 ×Architecture×Java×XML
167  Download Software Configuration Management Patterns 15,391 ×Architecture×Agile
39  Download Essential EMF 15,382 ×Architecture×Eclipse×Java×Other Languages×XML
42  Download Seam UI 15,184 ×Design/UX×Java×Standards
122  Download Functional Programming with Clojure: Simple Concurrency on the JVM 15,178 ×Clojure×Java
77  Download Core WS-BPEL: Business Process Execution Language 14,881 ×Agile/Methodologies×Other Languages×Standards
124  Download PHPUnit: PHP Test-Driven Development - Automated Tools to Improve Your PHP Code Quality 14,577 ×ALM×PHP
36  Download Core Mule 14,524 ×Architecture×Open Source×SOA
89  Download Getting Started with the Zend Framework 14,492 ×IDE×Open Source×PHP
100  Download Getting Started with Fitnesse 14,398 ×ALM
184  Download Core Spring Data 14,364 ×Database×Java×Architecture×NoSQL
92  Download Getting Started with Silverlight and Expression Blend 14,087 ×.NET×C#×Design/UX×IDE
146  Download Flex Mobile Development: Build Apps for Android, iOS, and BlackBerry Tablet OS 14,074 ×Android×Flex/ActionScript×IDE×iOS
136  Download WebMatrix: Advanced Web Development Made Simple 14,066 ×.NET×Content Management×E-Commerce×PHP×Windows
157  Download Database Partitioning with MySQL: Improving Performance, Availability, and Manageability 13,904 ×Database×Open Source
9  Download Flexible Rails: Flex 3 on Rails 2 13,871 ×Flex/ActionScript×Ruby
149  Download Chef: An Open Source Tool for Scalable Cloud and Data Center Automation 13,177 ×
189  Download Core C++ 13,022 ×C++×Core
65  Download ServiceMix 4.2: The Apache Open Source ESB 12,958 ×Architecture×Open Source×SOA×Web Services/Servers
23  Download PHP 5.4 12,919 ×PHP
182  Download Practical DNS: Managing Domains for Safety, Reliability, and Speed 12,771 ×DevOps×ALM
183  Download Data Mining: Discovering and Visualizing Patterns with Python 12,752 ×Database×Python×Architecture×Big Data
156  Download JavaFX 2.0: A Rich Client Platform for Java 12,745 ×Java×Design/UX
134  Download Cloud Computing with Windows Azure Platform 12,680 ×.NET×Cloud×Windows
161  Download Jenkins on PaaS: Continuous Integration with Jenkins for Java Projects 12,486 ×CI×Open Source×Java
40  Download Apache Tapestry 5.0 12,307 ×Design/UX×Java×Standards
194  Download Search Patterns 12,194 ×Search×Patterns
185  Download Getting Started with Subversion 12,125 ×ALM×Open Source
159  Download Apache HBase: The NoSQL Database for Hadoop and Big Data 12,059 ×Database×Big Data
180  Download Preparing for Continuous Delivery 11,947 ×Agile/Methodologies×ALM×DevOps
68  Download Getting Started with Oracle Berkeley DB 11,773 ×Database×NoSQL
160  Download Data Warehousing: Best Practices for Collecting, Storing, and Delivering Decision-Support Data 11,644 ×Database×Big Data×Business Intelligence/Reporting
75  Download Getting Started with BlazeDS 11,499 ×Flex/ActionScript×Java×Web Services/Servers
115  Download Getting Started with Infinispan 11,135 ×Database×Java×NoSQL×Open Source×XML
187  Download Spring Batch 11,107 ×Spring×Java×Architecture×framework
170  Download Camel Essential Components 10,793 ×Architecture×Java×XML
52  Download IntelliJ IDEA: Updated for 8.1 10,767 ×IDE
195  Download HTML5 IndexedDB 10,640 ×HTML5×Database
197  Download Spring Integration 10,528 ×Java×Spring×Integration
140  Download Mule 3.3: Simplifying SOA 10,293 ×SOA×Open Source×Web Services/Servers
142  Download Adobe Flash Builder 4.5: Develop for Web, Desktop and Mobile 10,261 ×Flex/ActionScript×IDE
49  Download BIRT 3.7 Report Design: Eclipse-Based BI and Big Data Visualization 10,257 ×ALM×Business Intelligence/Reporting×Eclipse×Java×Big Data
191  Download Getting Started with PhoneGap 10,210 ×Mobile×HTML5×PhoneGap
107  Download Getting Started with Griffon 10,204 ×Groovy×Open Source
132  Download Mastering Portals with a Portlet Bridge 10,018 ×Architecture×Content Management×Design/UX×Java×Standards
121  Download Open Source Media Framework: Building Simple Custom Video Players 9,935 ×Design/UX×Flex/ActionScript×Video/Animation
175  Download Core Dart: The Next-Generation Client-Side Web Programming Language 9,831 ×JavaScript
91  Download Getting Started with Adobe Flash Builder 4 9,709 ×Flex/ActionScript×IDE
53  Download Getting Started with db4o: Persisting .NET Object Data 9,415 ×.NET×Database
66  Download Getting Started with ColdFusion 9 9,196 ×ColdFusion
127  Download Developing a Silverlight Application for Windows Phone 7 9,056 ×.NET×Windows Phone
73  Download Getting Started with LiveCycle Data Services ES 8,947 ×Database×E-Commerce×Flex/ActionScript×Java
179  Download Sencha Touch 8,893 ×HTML×JavaScript×Android
188  Download Business Rules Management with Drools 8,718 ×Java×BPM
181  Download Binary Repository Management: Patterns for Performance, Security, and Traceability 8,111 ×DevOps×ALM
176  Download Essential Couchbase APIs: Open Source NoSQL Data Access from Java, Ruby, and .NET 7,709 ×Database×Java×.NET×Ruby
88  Download Getting Started with Caucho Resin 7,067 ×Java×Standards×Web Services/Servers
201  Download Reactive Programming with Akka 6,803 ×Scala×Java×Akka
113  Download Getting Started with Adobe Flash Catalyst 6,569 ×Design/UX×Flex/ActionScript
116  Download Adobe ColdFusion Web Services for PHP Programmers 5,904 ×ColdFusion×PHP×Web Services/Servers
96  Download Getting Started with PHP and Flex 5,683 ×Flex/ActionScript×PHP
103  Download Leveraging ColdFusion 9 Exposed Services from Java 5,352 ×ColdFusion×Java×Web Services/Servers
90  Download Getting Started with Adobe ColdFusion Builder 5,298 ×ColdFusion×IDE
202  Download Getting Started with Play Framework 4,905 ×Play×Java×Scala
204  Download Apache Spark 4,372 ×Big Data×NoSQL
143  Download ColdFusion Builder 2: Faster Coding, Less Errors 4,118 ×ColdFusion×IDE
190  Download Essential PostGIS 3,864 ×PostGIS×Geodata