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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 161,190 ×Architecture
2  Download Getting Started with Ajax 93,357 ×HTML×JavaScript×Web Services/Servers
4  Download Spring Configuration 92,289 ×Java×XML
24  Download Core Java 82,776 ×Algorithms×Java×Standards
7  Download jQuery Selectors 82,601 ×CSS×JavaScript
19  Download Core CSS: Part I 80,043 ×CSS
94  Download Getting Started with Git 79,027 ×ALM×Open Source
61  Download Core Java Concurrency 76,818 ×Algorithms×Java
3  Download Getting Started with Eclipse 66,174 ×ALM×Eclipse×IDE
25  Download Core CSS: Part II 65,060 ×CSS
29  Download Essential Admin for MySQL 5.5 63,319 ×Database×Open Source
5  Download Windows PowerShell 63,246 ×.NET×Windows
123  Download HTML5: New Standards for Web Interactivity 62,809 ×HTML×Standards
34  Download Core CSS: Part III 59,958 ×CSS
50  Download Scrum 59,641 ×Agile/Methodologies
26  Download Spring Annotations 58,062 ×Java
112  Download Getting Started with UML 56,541 ×ALM×Architecture×Open Source
129  Download REST: Foundations of RESTful Architecture 53,994 ×Standards×Web Services/Servers
64  Download Core HTML 53,935 ×HTML
55  Download Apache Maven 2 51,132 ×ALM×Java×Open Source
28  Download JUnit and EasyMock 49,506 ×ALM×Java
16  Download C# 49,345 ×.NET×C#
35  Download Using XML in Java 47,169 ×Java×XML
22  Download Getting Started with JPA 47,053 ×Database×Java×Standards
38  Download SOA Patterns 46,893 ×Architecture×SOA×Web Services/Servers
76  Download Getting Started with Domain-Driven Design 46,058 ×Agile/Methodologies×Architecture
95  Download Getting Started with Java GUI Development 43,474 ×Design/UX×Java
6  Download Dependency Injection in EJB 3 42,442 ×Java×Standards×XML
21  Download JavaServer Faces 41,551 ×Design/UX×Java×Standards×XML
84  Download Continuous Integration: Patterns and Anti-patterns 40,991 ×ALM
58  Download JavaServer Faces 2.0 39,488 ×Java×Standards
130  Download Designing Quality Software: Architectural and Technical Best Practices 39,327 ×Architecture
82  Download Getting Started with Cloud Computing 39,094 ×Cloud
15  Download Groovy 38,816 ×Groovy×Java
101  Download JDBC Best Practices 38,196 ×Architecture×Database×Java×Standards
117  Download Getting Started with Apache Hadoop 34,527 ×Architecture×Big Data×Database×Open Source
79  Download Google App Engine for Java 34,394 ×Cloud×Java
145  Download Continuous Delivery: Patterns and Antipatterns in the Software Lifecycle 34,322 ×Agile/Methodologies×ALM×DevOps
141  Download Node.js: Building for Scalability with Server-Side JavaScript 33,679 ×JavaScript×Open Source
43  Download Scalability & High Availability 33,288 ×Architecture×Big Data×Database
151  Download HTML5 Canvas: A Web Standard for Dynamic Graphics 33,148 ×HTML×Standards×JavaScript
18  Download Core .NET 32,668 ×.NET×C#
32  Download Getting Started with Hibernate Search 32,580 ×Database×Java×Search
20  Download Struts2 32,526 ×Design/UX×Java×Open Source
105  Download Getting Started with NoSQL and Data Scalability 32,204 ×Big Data×Database×NoSQL
174  Download Object-Oriented JavaScript: Advanced Techniques for Serious Web Applications 31,609 ×JavaScript
33  Download Essential JSP Expression Language 31,023 ×Java×Standards
173  Download Core JSON: The Fat Free Alternative to XML 30,998 ×JavaScript
30  Download Essential Ruby 30,598 ×Ruby
98  Download Getting Started with Maven Repository Management 30,422 ×ALM×Java
99  Download Getting Started with Java EE Security 30,040 ×Java×Security×Standards
74  Download Agile Adoption: Improving Software Quality 30,013 ×Agile/Methodologies×Architecture
85  Download Vaadin: A Familiar Way to Build Web Apps with Java 29,958 ×Design/UX×Java×JavaScript
150  Download Java Enterprise Edition 6: The Most Elegant Enterprise Java yet 29,373 ×Java
86  Download Spring Web Flow 29,313 ×Design/UX×E-Commerce×IDE×Java
108  Download Getting Started with Firebug 1.5 28,921 ×ALM×CSS×HTML×JavaScript
83  Download Contexts and Dependency Injection for the Java EE Platform 28,029 ×Java×Standards
110  Download Objective-C for the iPhone and iPad 27,915 ×C/C++×iOS
1  Download GWT Style, Configuration and JSNI Reference 27,616 ×Java×JavaScript
71  Download Essential PostgreSQL 27,280 ×Database×Open Source
119  Download Getting Started with Application Lifecycle Management 27,089 ×ALM
152  Download HTML5 WebSocket: Full-duplex Real-time Web Communication 26,846 ×HTML×Standards×JavaScript
109  Download Getting Started with Kanban for Software Development 26,574 ×Agile/Methodologies
17  Download Very First Steps in Flex 26,543 ×Flex/ActionScript×Java×Web Services/Servers
104  Download Getting Started with Apache Ant 26,515 ×ALM×Java×Open Source×XML
155  Download Mockito: A Simple, Intuitive Mocking Framework 26,433 ×Java×Agile/Methodologies
14  Download NetBeans IDE 7: Programming in Java 7 26,259 ×IDE×Java×NetBeans
87  Download Continuous Integration: Servers and Tools 26,225 ×ALM×Open Source
128  Download What's New in JPA 2.0 25,932 ×Database×Java×Standards
172  Download HTTP: The Hypertext Transfer Protocol 25,357 ×Web Services/Servers×Standards
166  Download Patterns of Modular Architecture 24,647 ×Architecture×Java×Eclipse
67  Download Getting Started with Selenium 24,266 ×ALM×JavaScript×Open Source
54  Download Agile Adoption: Reducing Cost 24,249 ×Agile/Methodologies
139  Download Spring Roo: Making Java Fun Again 24,118 ×IDE×Java
13  Download RSS and Atom 24,001 ×Content Management×Web Services/Servers
51  Download Effective Process Modeling with BPM & BPMN 23,769 ×Agile/Methodologies×Other Languages
147  Download Eclipse Tools for Spring: The SpringSource Tool Suite 23,595 ×Eclipse×IDE×Java
196  Download Regular Expressions 23,526 ×Algorithms×Patterns×Search
59  Download Getting Started with Drupal 7 23,275 ×PHP×Content Management×Drupal
46  Download Core ASP.NET 23,223 ×.NET×C#
93  Download Getting Started with Lean Software Development 23,102 ×Agile/Methodologies
118  Download Getting Started with Visual Studio 2010 22,975 ×.NET×C#×IDE
57  Download Getting Started with Spring-DM 22,779 ×Architecture×Java
120  Download Apache Solr: Getting Optimal Search Results 22,672 ×Algorithms×Search×Web Services/Servers×XML
44  Download JBoss RichFaces 22,627 ×Java×Standards×XML
164  Download Getting Started with Scala 22,569 ×JVM×Java×Scala
171  Download MongoDB 22,557 ×Architecture×NoSQL×Database
78  Download Getting Started with Virtualization 22,420 ×.NET×Virtualization
56  Download Getting Started with JavaFX 22,391 ×Java
45  Download Agile Adoption: Decreasing Time to Market 22,275 ×Agile/Methodologies×ALM
168  Download Refactoring Patterns 21,611 ×Architecture×Java×
60  Download Getting Started with Grails 21,388 ×Groovy
106  Download Expression-Based Authorization with Spring Security 3 21,050 ×Java×Security×XML
125  Download Selenium 2.0: Using the WebDriver API to Create Robust User Acceptance Tests 20,934 ×ALM×JavaScript×Open Source
165  Download Deployment Automation Patterns 20,688 ×Agile/Methodologies×ALM×DevOps
114  Download Application Prototyping with SketchFlow 20,529 ×.NET×ALM×Design/UX
198  Download Java Enterprise Edition 7: Streamlining Modern Java Development 20,494 ×Java
135  Download The MVVM Design Pattern: A Formula for Elegant, Maintainable Mobile Apps 20,383 ×.NET×Architecture×Windows Phone
97  Download Getting Started with JBoss Enterprise Application Platform 5 20,365 ×ALM×Java×Standards
11  Download IntelliJ IDEA 20,355 ×ALM×IDE
169  Download Essential Apache HTTP Server 19,501 ×Web Services/Servers×LAMP
62  Download Getting Started with Eclipse RCP 19,490 ×Eclipse×IDE
111  Download Getting Started with Windows Communication Foundation 4.0 19,487 ×.NET×Web Services/Servers
158  Download Big Data Machine Learning: Patterns for Predictive Analytics 19,475 ×Algorithms×Database×Big Data
178  Download Git Patterns and Anti-Patterns: Scaling from Workgroup to Enterprise 19,008 ×ALM×Open Source
70  Download Eclipse Plug-in Development 18,951 ×Eclipse
102  Download Flex 4 and Spring 3 Integration 18,429 ×Flex/ActionScript×Java×Web Services/Servers×XML
126  Download Liferay Essentials: A Definitive Guide for Enterprise Portal Development 18,398 ×Content Management×Design/UX×Java
144  Download EclipseLink JPA: An Advanced ORM Persistence Framework 18,225 ×Database×Eclipse×Java
41  Download SOA Governance 18,212 ×SOA
37  Download Getting Started with Equinox and OSGi 18,017 ×Architecture×Eclipse×Java
177  Download HTML5 Web Workers: Multithreaded JavaScript for High-Performance Web Applications 17,994 ×HTML×Javascript×Architecture
133  Download Apache Hadoop Deployment: A Blueprint for Reliable Distributed Computing 17,977 ×Algorithms×Architecture×Big Data×Database×Open Source
12  Download Getting Started with GlassFish Application Server v3 17,952 ×Java×Standards×Web Services/Servers
72  Download Getting Started with Windows Presentation Foundation 17,892 ×.NET×Design/UX
27  Download Getting Started with MyEclipse 17,878 ×Eclipse×IDE×Java
163  Download Code Gems for Android Developers: Working with the World's Most Popular Mobile OS 17,877 ×Java×Android
137  Download Understanding Lucene: Powering Better Search Results 17,831 ×Algorithms×Java×Search×XML
31  Download Core Seam 17,764 ×Java×Security×XML
10  Download Silverlight 2 17,611 ×.NET×C#×Design/UX
63  Download Getting Started with Apache Wicket 17,524 ×Design/UX×Java×Open Source
48  Download Flex & Spring Integration 17,339 ×Flex/ActionScript×Java×XML
148  Download Mastering Portal UI Development With Vaadin and Liferay 17,208 ×Content Management×Design/UX×Java
69  Download Getting Started with ASP.NET MVC 1.0 16,923 ×.NET
138  Download RichFaces 4.0: A Next Generation JSF Framework 16,898 ×
192  Download CSS3: Basics 16,631 ×CSS×CSS3×Web Design
153  Download Apache Cassandra: A Fault-Tolerant, Massively Scalable NoSQL Database 16,607 ×Database×NoSQL
186  Download HTML5 Mobile Development 16,555 ×HTML×HTML5
200  Download Java Performance Optimization 16,432 ×Java×Performance×JVM
80  Download NetBeans Platform 7.0: A Framework for Building Pluggable Enterprise Applications 16,139 ×IDE×Java
162  Download Java Profiling with VisualVM: X-Ray Vision for Dramatic Performance Gains 15,937 ×Java
154  Download Jetty: A Lightweight, Open-Source Web Server and Servlet Container 15,812 ×Java×Web Services/Servers
131  Download ADO.NET Entity Framework: Object-Relational Mapping and Data Access 15,505 ×.NET×Database×IDE
199  Download Debugging JavaScript 15,279 ×JavaScript
81  Download Essential F# 15,268 ×.NET×Other Languages
39  Download Essential EMF 15,224 ×Architecture×Eclipse×Java×Other Languages×XML
193  Download Core Python 15,223 ×Python×Core
167  Download Software Configuration Management Patterns 15,200 ×Architecture×Agile
47  Download The Top Twelve Integration Patterns for Apache Camel 15,088 ×Architecture×Java×XML
42  Download Seam UI 15,083 ×Design/UX×Java×Standards
122  Download Functional Programming with Clojure: Simple Concurrency on the JVM 14,985 ×Clojure×Java
77  Download Core WS-BPEL: Business Process Execution Language 14,745 ×Agile/Methodologies×Other Languages×Standards
124  Download PHPUnit: PHP Test-Driven Development - Automated Tools to Improve Your PHP Code Quality 14,460 ×ALM×PHP
89  Download Getting Started with the Zend Framework 14,384 ×IDE×Open Source×PHP
36  Download Core Mule 14,354 ×Architecture×Open Source×SOA
100  Download Getting Started with Fitnesse 14,258 ×ALM
184  Download Core Spring Data 14,066 ×Database×Java×Architecture×NoSQL
92  Download Getting Started with Silverlight and Expression Blend 13,994 ×.NET×C#×Design/UX×IDE
146  Download Flex Mobile Development: Build Apps for Android, iOS, and BlackBerry Tablet OS 13,963 ×Android×Flex/ActionScript×IDE×iOS
136  Download WebMatrix: Advanced Web Development Made Simple 13,893 ×.NET×Content Management×E-Commerce×PHP×Windows
9  Download Flexible Rails: Flex 3 on Rails 2 13,806 ×Flex/ActionScript×Ruby
157  Download Database Partitioning with MySQL: Improving Performance, Availability, and Manageability 13,672 ×Database×Open Source
149  Download Chef: An Open Source Tool for Scalable Cloud and Data Center Automation 13,003 ×
65  Download ServiceMix 4.2: The Apache Open Source ESB 12,802 ×Architecture×Open Source×SOA×Web Services/Servers
189  Download Core C++ 12,742 ×C++×Core
23  Download PHP 5.4 12,716 ×PHP
156  Download JavaFX 2.0: A Rich Client Platform for Java 12,607 ×Java×Design/UX
182  Download Practical DNS: Managing Domains for Safety, Reliability, and Speed 12,533 ×DevOps×ALM
134  Download Cloud Computing with Windows Azure Platform 12,519 ×.NET×Cloud×Windows
183  Download Data Mining: Discovering and Visualizing Patterns with Python 12,509 ×Database×Python×Architecture×Big Data
161  Download Jenkins on PaaS: Continuous Integration with Jenkins for Java Projects 12,250 ×CI×Open Source×Java
40  Download Apache Tapestry 5.0 12,209 ×Design/UX×Java×Standards
194  Download Search Patterns 11,972 ×Search×Patterns
185  Download Getting Started with Subversion 11,958 ×ALM×Open Source
180  Download Preparing for Continuous Delivery 11,738 ×Agile/Methodologies×ALM×DevOps
68  Download Getting Started with Oracle Berkeley DB 11,656 ×Database×NoSQL
159  Download Apache HBase: The NoSQL Database for Hadoop and Big Data 11,529 ×Database×Big Data
160  Download Data Warehousing: Best Practices for Collecting, Storing, and Delivering Decision-Support Data 11,436 ×Database×Big Data×Business Intelligence/Reporting
75  Download Getting Started with BlazeDS 11,435 ×Flex/ActionScript×Java×Web Services/Servers
115  Download Getting Started with Infinispan 11,004 ×Database×Java×NoSQL×Open Source×XML
187  Download Spring Batch 10,817 ×Spring×Java×Architecture×framework
52  Download IntelliJ IDEA: Updated for 8.1 10,636 ×IDE
170  Download Camel Essential Components 10,531 ×Architecture×Java×XML
195  Download HTML5 IndexedDB 10,408 ×HTML5×Database
142  Download Adobe Flash Builder 4.5: Develop for Web, Desktop and Mobile 10,196 ×Flex/ActionScript×IDE
140  Download Mule 3.3: Simplifying SOA 10,178 ×SOA×Open Source×Web Services/Servers
107  Download Getting Started with Griffon 10,102 ×Groovy×Open Source
197  Download Spring Integration 10,098 ×Java×Spring×Integration
49  Download BIRT 3.7 Report Design: Eclipse-Based BI and Big Data Visualization 10,087 ×ALM×Business Intelligence/Reporting×Eclipse×Java×Big Data
191  Download Getting Started with PhoneGap 10,053 ×Mobile×HTML5×PhoneGap
132  Download Mastering Portals with a Portlet Bridge 9,906 ×Architecture×Content Management×Design/UX×Java×Standards
121  Download Open Source Media Framework: Building Simple Custom Video Players 9,826 ×Design/UX×Flex/ActionScript×Video/Animation
175  Download Core Dart: The Next-Generation Client-Side Web Programming Language 9,731 ×JavaScript
91  Download Getting Started with Adobe Flash Builder 4 9,659 ×Flex/ActionScript×IDE
53  Download Getting Started with db4o: Persisting .NET Object Data 9,340 ×.NET×Database
66  Download Getting Started with ColdFusion 9 9,142 ×ColdFusion
127  Download Developing a Silverlight Application for Windows Phone 7 9,011 ×.NET×Windows Phone
73  Download Getting Started with LiveCycle Data Services ES 8,884 ×Database×E-Commerce×Flex/ActionScript×Java
179  Download Sencha Touch 8,794 ×HTML×JavaScript×Android
188  Download Business Rules Management with Drools 8,508 ×Java×BPM
181  Download Binary Repository Management: Patterns for Performance, Security, and Traceability 7,988 ×DevOps×ALM
176  Download Essential Couchbase APIs: Open Source NoSQL Data Access from Java, Ruby, and .NET 7,541 ×Database×Java×.NET×Ruby
88  Download Getting Started with Caucho Resin 7,004 ×Java×Standards×Web Services/Servers
113  Download Getting Started with Adobe Flash Catalyst 6,528 ×Design/UX×Flex/ActionScript
201  Download Reactive Programming with Akka 6,382 ×Scala×Java×Akka
116  Download Adobe ColdFusion Web Services for PHP Programmers 5,857 ×ColdFusion×PHP×Web Services/Servers
96  Download Getting Started with PHP and Flex 5,633 ×Flex/ActionScript×PHP
103  Download Leveraging ColdFusion 9 Exposed Services from Java 5,310 ×ColdFusion×Java×Web Services/Servers
90  Download Getting Started with Adobe ColdFusion Builder 5,251 ×ColdFusion×IDE
202  Download Getting Started with Play Framework 4,487 ×Play×Java×Scala
143  Download ColdFusion Builder 2: Faster Coding, Less Errors 4,075 ×ColdFusion×IDE