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Free Tutorials

Web Development

HTML
HTML5
CSS
Pure CSS
XML
XSLT
Xquery
JavaScript
JQuery
Bootstrap
Node.js
Angular.js

Programming 

C Programming
C ++
DataStructures
C#
Core Java
Servlet
JSP
JSTL
Struts2
Spring
JSF
Hibernate

Database

Oracle 11g
MySQL
MongoDB
Cassandra
Sqlite
Solr
PostgreSql
MSSQLserver
mariadb
couchdb
Neo4j

RAC, Goldengate

BigData Technologies

Hadoop 
Mapreduce 
hive
pig
flume
Hbase
spark
scala
sqoop
zookeeper
mahout
kafka