diff --git a/libraries-data/README.md b/libraries-data/README.md
index 1ad7e94a1f..92c546c258 100644
--- a/libraries-data/README.md
+++ b/libraries-data/README.md
@@ -9,7 +9,6 @@
 - [Introduction to JCache](http://www.baeldung.com/jcache)
 - [A Guide to Apache Ignite](http://www.baeldung.com/apache-ignite)
 - [Apache Ignite with Spring Data](http://www.baeldung.com/apache-ignite-spring-data)
-- [Guide to JMapper](https://www.baeldung.com/jmapper)
 - [A Guide to Apache Crunch](https://www.baeldung.com/apache-crunch)
 - [Intro to Apache Storm](https://www.baeldung.com/apache-storm)
 - [Guide to Ebean ORM](https://www.baeldung.com/ebean-orm)
diff --git a/libraries-data/pom.xml b/libraries-data/pom.xml
index 88dcceafaa..e255236480 100644
--- a/libraries-data/pom.xml
+++ b/libraries-data/pom.xml
@@ -141,12 +141,7 @@
             <artifactId>hazelcast</artifactId>
             <version>${hazelcast.version}</version>
         </dependency>
-        
-        <dependency>
-            <groupId>com.googlecode.jmapper-framework</groupId>
-            <artifactId>jmapper-core</artifactId>
-            <version>${jmapper.version}</version>
-        </dependency>
+
         <!--  crunch project  -->
         <dependency>
             <groupId>org.apache.crunch</groupId>
@@ -460,7 +455,6 @@
         <datanucleus-maven-plugin.version>5.0.2</datanucleus-maven-plugin.version>
         <datanucleus-xml.version>5.0.0-release</datanucleus-xml.version>
         <datanucleus-jdo-query.version>5.0.4</datanucleus-jdo-query.version>
-        <jmapper.version>1.6.0.1</jmapper.version>
         <org.apache.crunch.crunch-core.version>0.15.0</org.apache.crunch.crunch-core.version>
         <org.apache.hadoop.hadoop-client>2.2.0</org.apache.hadoop.hadoop-client> 
         <ebean.version>11.22.4</ebean.version>
diff --git a/libraries-http/README.md b/libraries-http/README.md
index dd8c6a5f67..d5eaed0736 100644
--- a/libraries-http/README.md
+++ b/libraries-http/README.md
@@ -5,3 +5,7 @@
 - [A Guide to Google-Http-Client](http://www.baeldung.com/google-http-client)
 - [Asynchronous HTTP with async-http-client in Java](http://www.baeldung.com/async-http-client)
 - [WebSockets with AsyncHttpClient](http://www.baeldung.com/async-http-client-websockets)
+- [Integrating Retrofit with RxJava](http://www.baeldung.com/retrofit-rxjava)
+- [Introduction to Retrofit](http://www.baeldung.com/retrofit)
+- [A Guide to Unirest](http://www.baeldung.com/unirest)
+- [Creating REST Microservices with Javalin](http://www.baeldung.com/javalin-rest-microservices)
\ No newline at end of file
diff --git a/libraries-http/pom.xml b/libraries-http/pom.xml
index 6006a93aef..44280d848c 100644
--- a/libraries-http/pom.xml
+++ b/libraries-http/pom.xml
@@ -44,6 +44,23 @@
             <version>${googleclient.version}</version>
         </dependency>
 
+		<!-- Retrofit -->
+		<dependency>
+			<groupId>com.squareup.retrofit2</groupId>
+			<artifactId>retrofit</artifactId>
+			<version>${retrofit.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>com.squareup.retrofit2</groupId>
+			<artifactId>converter-gson</artifactId>
+			<version>${retrofit.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>com.squareup.retrofit2</groupId>
+			<artifactId>adapter-rxjava</artifactId>
+			<version>${retrofit.version}</version>
+		</dependency>
+
         <!-- https://mvnrepository.com/artifact/org.asynchttpclient/async-http-client -->
         <dependency>
             <groupId>org.asynchttpclient</groupId>
@@ -69,13 +86,52 @@
             <version>${com.squareup.okhttp3.version}</version>
 			<scope>test</scope>
 		</dependency>
+
+		<dependency>
+			<groupId>com.mashape.unirest</groupId>
+			<artifactId>unirest-java</artifactId>
+			<version>${unirest.version}</version>
+		</dependency>
+		<!-- javalin -->
+		<dependency>
+			<groupId>io.javalin</groupId>
+			<artifactId>javalin</artifactId>
+			<version>${javalin.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>com.squareup.okhttp3</groupId>
+			<artifactId>logging-interceptor</artifactId>
+			<version>${logging-interceptor.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
+			<version>${jackson.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.httpcomponents</groupId>
+			<artifactId>httpclient</artifactId>
+			<version>${httpclient.version}</version>
+			<exclusions>
+				<exclusion>
+					<artifactId>commons-logging</artifactId>
+					<groupId>commons-logging</groupId>
+				</exclusion>
+			</exclusions>
+		</dependency>
           
 	</dependencies>
 
 	<properties>
+		<httpclient.version>4.5.3</httpclient.version>
+		<jackson.version>2.9.8</jackson.version>
 		<assertj.version>3.6.2</assertj.version>
         <com.squareup.okhttp3.version>3.14.2</com.squareup.okhttp3.version>
         <googleclient.version>1.23.0</googleclient.version>
         <async.http.client.version>2.2.0</async.http.client.version>
+		<retrofit.version>2.3.0</retrofit.version>
+		<unirest.version>1.4.9</unirest.version>
+		<javalin.version>1.6.0</javalin.version>
+		<logging-interceptor.version>3.9.0</logging-interceptor.version>
 	</properties>
 </project>