Name: OpenJDK
Rating: 7.4 (23 reviews)
Author: Open Source

Help Desk

Web and Video Conferencing

Customer Support

No-Code Development

Development

Admissions and Enrollment

School Management

Education

Business Intelligence (BI)

Collaboration

Digital Rights Management (DRM)

Enterprise Content Management

Manufacturing Execution

PDF Editors

Privacy Policy Generators

Statistical Analysis

Visitor Management

Enterprise

Accounting

Finance and Accounting

Applicant Tracking

Corporate Learning Management

Employee Referral

HR Management

Payroll

Talent Intelligence

Talent Management

Workforce Analytics

Workforce Management

Human Resources

Access Gateways

Application Lifecycle Management (ALM)

Application Performance Management (APM)

Cloud Storage

Complex Event Processing

Composable Infrastructure

Configuration Management Databases

Fraud Detection

Integration Platform as a Service (iPaaS)

Internet Performance Monitoring

Log Management

Network Operating Systems

Network Performance Monitoring

SIP Trunking

SOA Application Gateways

Telecom Expense Management (TEM)

Unified Communications Monitoring

Vendor Risk Management

WiFi Hotspot

Information Technology

A/B Testing

Ad Serving & Retargeting

All-in-One Marketing

Blogging

Channel Management

Content Management

Email Deliverability

Email Marketing

Employee Advocacy

Marketing Automation

Social Media Management

Survey & Forms Building

Web Analytics

Marketing

Project Management

Writing and Proofreading Tools

Professional Services

Customer Onboarding

Customer Relationship Management (CRM)

Social Commerce

Sales

Chargeback Management

Clinical Data Management

Construction Management

Fleet Management

Membership Management

Municipal

Online Fax

Restaurant POS

Roofing

Simulation

Text Analysis

Travel Agency

Warranty Management

Vertical-Specific

Find top rated software and services based on in-depth reviews from verified users. 400+ software categories including PaaS, NoSQL, BI, HR, and more.

Eclipse Temurin

Open Source

IBM Semeru Runtime

Amazon Corretto

Amazon AWS

Red Hat build of OpenJDK

Red Hat

Eclipse OpenJ9

SapMachine

Microsoft Build of OpenJDK

Microsoft

GraalVM

Oracle

Oracle Java SE

Node.js

Best Of Feature Set awarded in Winter 2023

Best Of Feature Set Winter 2023

Best Of Relationship awarded in Winter 2023

Best Of Relationship Winter 2023

Best Of Value Winter 2023

### Cost Management
Users consistently highlight OpenJDK's cost management capabilities as a key advantage, emphasizing the cost savings achieved through its open-source nature and lack of license fees. The platform's ability to reduce project costs, enhance performance, and provide a cost-effective solution for both development and maintenance tasks is widely acknowledged by reviewers. Additionally, the ease of use and availability of a wide range of development tools further contribute to the overall cost efficiency of utilizing OpenJDK for various projects. (Source Reviews: [1](https://www.trustradius.com/reviews/openjdk-2022-10-18-07-22-54), [2](https://www.trustradius.com/reviews/openjdk-2022-10-11-10-55-29), [3](https://www.trustradius.com/reviews/openjdk-2022-10-10-09-18-09), [4](https://www.trustradius.com/reviews/openjdk-2022-10-10-10-27-05), [5](https://www.trustradius.com/reviews/openjdk-2022-10-10-09-32-19))

### Performance Optimization
Reviewers consistently highlight OpenJDK's robust performance optimization features, emphasizing its ability to enhance application scalability and efficiency. Users appreciate the platform's support for multithreading and memory management, which contribute to improved performance in CPU-intensive applications. While some suggest room for improvement in concurrent task running and JVM performance, the overall consensus leans towards OpenJDK's effective performance optimization capabilities. (Source Reviews: [1](https://www.trustradius.com/reviews/openjdk-2022-10-12-12-35-59), [2](https://www.trustradius.com/reviews/openjdk-2022-10-10-16-11-11), [3](https://www.trustradius.com/reviews/openjdk-2022-10-10-09-18-09), [4](https://www.trustradius.com/reviews/openjdk-2022-10-10-10-27-05), [5](https://www.trustradius.com/reviews/openjdk-2022-10-11-10-55-29))

### Development and Operational Cost Reduction
Users consistently praise OpenJDK for its remarkable ability to save costs in both development and operations. Reviewers highlight that utilizing OpenJDK has significantly reduced project costs, with one user mentioning a 30% cost reduction. The open-source nature of OpenJDK not only saves on licensing fees but also enhances security through regular updates. Additionally, users have reported increased efficiency in development and implementation processes, leading to substantial annual profits. The general sentiment among users is that OpenJDK's development and operational cost reduction capabilities are a strong asset that positively impacts their projects. (Source Reviews: [1](https://www.trustradius.com/reviews/openjdk-2022-10-18-07-22-54), [2](https://www.trustradius.com/reviews/openjdk-2022-10-16-11-57-17), [3](https://www.trustradius.com/reviews/openjdk-2022-10-10-09-18-09))

### Platform Compatibility
Reviewers consistently highlight OpenJDK's robust platform compatibility, with strong support for both Linux and Windows operating systems. Users appreciate the stability and wide package support, although some mention the lack of support for older Linux versions and the need for frequent updates. Despite these minor drawbacks, OpenJDK's platform compatibility remains a key strength, enabling users to work on complex modeling programs and access data from various locations seamlessly. The multiplatform development capabilities and wide community support further enhance the overall user experience with OpenJDK. (Source Reviews: [1](https://www.trustradius.com/reviews/openjdk-2022-10-10-09-32-19), [2](https://www.trustradius.com/reviews/openjdk-2022-10-16-11-57-17), [3](https://www.trustradius.com/reviews/openjdk-2022-10-12-12-35-59))

### Long-Term Support
Users generally appreciate OpenJDK's long-term support capabilities. Reviewers highlight the advantage of Red Hat's support for OpenJDK from version 7 onwards, emphasizing its integration with AWS and compatibility with Java-based backend systems. While some users mention limitations such as lack of support for older Linux versions and the need for frequent updates, overall, the consensus leans towards acknowledging the value of OpenJDK's long-term support in ensuring the stability and reliability of Java-based applications. (Source Reviews: [1](https://www.trustradius.com/reviews/openjdk-2022-10-16-11-57-17), [2](https://www.trustradius.com/reviews/openjdk-2022-10-10-09-32-19), [3](https://www.trustradius.com/reviews/openjdk-2022-10-10-16-11-11))

1. Lack of customization options: Some users have expressed the desire for more flexibility in customizing open-source packages and libraries within the JDK, as they feel limited by the current options available.

2. Inadequate documentation and resource logs: Several reviewers have mentioned that certain packages lack proper documentation and resource logs, making it difficult for developers to understand their functionality and troubleshoot issues effectively.

3. Compatibility limitations: Users have reported dissatisfaction with the lack of support for older Linux versions and the default absence of NTFS format support. This has caused inconvenience for some developers who rely on these features in their work.

OpenJDK has proven to be an invaluable tool for Java development and deployment. With its open-source nature, it offers users a cost-effective alternative to the commercial JDK. Many users have praised OpenJDK for its ability to reduce project costs by allowing them to use premium packages without any additional licensing fees. This has been particularly beneficial for organizations looking to stabilize their operations and improve Java development without incurring hefty expenses.

OpenJDK is widely used for troubleshooting, administration, and monitoring of Java-based applications. Its versatility has made it suitable for both large enterprise services and small tools within organizations. Users rely on OpenJDK for critical backend applications that are crucial for business operations, such as running web applications and building gateways between different applications.

The implementation, monitoring, and troubleshooting capabilities of OpenJDK have helped countless users ensure the smooth functioning of their Java platforms. It is frequently used in conjunction with AWS for IAAS, deployment, and hosting purposes. Additionally, Red Hat provides long-term support for OpenJDK starting from version 7, giving users peace of mind regarding its stability and reliability.

Overall, OpenJDK has established itself as a preferred choice for Java developers, administrators, and organizations seeking an open-source alternative to the commercial JDK. Its cost-effectiveness, extensive functionality, and compatibility with various applications make it a valuable tool in the Java development ecosystem.

Reliability and Speed: Users have consistently found OpenJDK to be a reliable and fast option compared to other products in the market. Several reviewers have praised its performance, indicating that it meets or exceeds expectations in this aspect.

Ease of Use: OpenJDK is widely appreciated for its ease of use, making it one of the best options available. Many users have mentioned that they find it intuitive and user-friendly, resulting in a positive experience with the product.

Open-Source Flexibility: The fact that OpenJDK is an open-source solution has been highly regarded by users. This attribute allows for greater flexibility and access to a wide range of packages and APIs. Numerous reviewers value the freedom and customization options provided by this open-source nature of OpenJDK.

OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE) licensed under the GNU General Public License (GNU GPL) version 2 with a linking exception.

OpenJDK

Java Technologies

OpenJDK 17 | Container Detection Demo

Deploying Java applications on Kubernetes with resource limits imposed is quite common these days. Since recently OpenJDK supports cgroups v2 via its container detection code. In this screencast, it is shown how OpenJDK detects container resource limits imposed via Kubernetes on a cgroups v2 system and how those resource limits can affect GC algorithm selection. The demo also shows which cgroup version has been detected on the deployed system and which actual resource limits are in place.

OpenJDK 17 Container Detection Demo

There were several users who questioned whether my software could run on the OpenJDK compared to Oracle's JDK.  This video demonstrates it runs without difficulty on the latest version of the OpenJDK (18.0.2).  Demo is on Ubuntu 22.04 LTS, but should work for Windows and Mac as well.

OpenJDK download:  https://jdk.java.net/18/

Oracle JDK download:  https://www.oracle.com/java/technologies/downloads/#jdk17-windows

MShots running on OpenJDK

Java Text Block Demo

Likelihood to Recommend

IntelliJ IDEA

Microsoft Visual Studio Code

Senior Software Engineer

OpenJDK 2022-10-18 07:22:54

Oracle Java Cloud

Data Engineer

OpenJDK 2022-10-10 09:18:09

Apache HBase

Apache Spark

Apache Kafka

Lead Application Engineer IV

OpenJDK 2022-10-16 11:57:17

OpenJDK 2022-10-10 09:32:19

Atlassian Confluence

Atlassian Jira

PostgreSQL

IBM Storage Ceph

Sparx Systems Enterprise Architect

Elasticsearch

AngularJS

OpenJDK 2022-10-10 10:27:05

Microsoft Visual Studio

Azul Zulu Builds of OpenJDK

OpenJDK 2022-10-12 12:35:59

GitHub

Microsoft Teams

OpenJDK 2022-10-11 10:55:29

Microsoft SQL Server

DBeaver

Postman

OpenJDK 2022-10-10 16:11:11

TrustRadius is a technology and business research firm based in Austin, Texas. The company is known as a review platform for verified B2B technology and software reviews through a proprietary algorithm and human verification.

TrustRadius

Home

Back in 2018, when the news was being spread around about the coming changes to the JDK license from Oracle, my company back then, naturally, as a software provider, had a minor panic. We were deploying lots of software for our clients, written using Java. I guess it was the final push for us to embrace open source fully. And we went with OpenJDK for our development &amp; deployment needs.

It's a JDK, following Java specs.
It's free & open source.
Can be deployed on servers without licensing.

Save cost on developer laptops.
Save cost on company servers.
Save cost on clients' servers.

Amazon Corretto, IntelliJ IDEA, Microsoft Visual Studio Code

To address one of business case problem related to e-commerce application. OpenJDK allowed to use most of premium packages for free, which significantly reduced the cost to project. Most API related and infrastructure related tech features implemented and fabricated with OpenJDK packages and Libraries.
Extensive tech configurations are still developed with this product. we would to like to continue the usage this package for our upcoming projects as well.

Best opensource packages and access to opensource APIs
Fast and reliable to use compare to current market products.
Business case related solutions and premium products are available
Easier to use and best in market

JDK needs to allow developers to mould these opensource packages and Libraries.
Few irrelevant packages and inappropriate libraries to removed
Few packages need documentation and resource logs as well.

Opensource packages
Premium resources and products for business case related
Developer friendly and approachable.
Lesser cost and ease to use

As per our business objectives we are 4 times benifitted with product
Faster for development and implementation
Reduced our cost by 30%
Annual profits of 24%

Oracle Java SE, Amazon Corretto and Oracle Java Cloud

Oracle Java SE, Oracle Java Cloud, Amazon Corretto

We use OpenJDK to provide java for our users whose applications need a java environment to interact with our application clusters (ex. Hadoop, Kafka, etc). We use it across all environments, as an opensource one-to-one replacement for our previous commercial JDK.

OpenJDK is a robust opensource replacement for Oracle JDK
OpenJDK has support from RedHat (our approved Linux O/S)
OpenJDK is supported on both RedHat and Windows platforms

We've run into an occasional stability issue, but the fixes are quickly updated.
Oracle was better at garbage collection.

Opensource
RedHat compatible, and supported
Supported on both RedHat and Windows platforms

Reduced costs (opensource)
Improved security (more regular update release cycle)
Full lifecycle support across platforms (RedHat and Windows )

We use it for troubleshooting, administration, and monitoring.This IDE helped stabilize the organization. Open JDK has allowed us to continue improving Java without paying too much for Oracle.

It has support for both Linux and windows
Very stable , lightweight and has wide support for different packages
Bug fixing is really quick ,great support team very responsive

There is no support for old Linux versions
NTFS format is not supported by default.
Frequent updates installation is required.

Very light weight
Its license is open source and available free of cost to the community
It has wide support for different type of packages

We haven't seen any negative impact on our investment.

We use OpenJDK for all Java development within our organization. It opens the possibility to implement Java based system without involving expensive license fees. We use OpenJDK both for large enterprise services but also for small tools, it’s the primary development language within our organization.

Support options
Compatibility with commercial alternatives

Costs
Open source
Compatibility with Java standard

Avoid increased costs thanks to no license fees
Easier redistribution thanks to license terms

Elasticsearch, Red Hat Ceph Storage, AngularJS, PostgreSQL, Sparx Systems Enterprise Architect, Atlassian Confluence, Jira Software

We use OpenJDK in various backend applications that are crucial for the business we run. We it to run web applications in general. We use it for building gateways between applications, and do calculations relative to our line of business. It is an interesting solution because works in different environments without much hassle.

Concurrency
Memory Management
Multiplatform Development

Native support for Green Threads
Reduce Memory Usage
Support for live reloading

multiplatform development
ease to use
wide community

Faster development
Ease to setup environments
Stable applications

Oracle Java SE, Red Hat build of OpenJDK, Microsoft Build of OpenJDK and Azul Zulu Builds of OpenJDK

IntelliJ IDEA, Microsoft Visual Studio Code, Visual Studio IDE

We used Open JDK in our organization to solve problems like run time-based crons, We will develop the application in our local using Java and deploy this application on the server. Using this OpenJDK we can build and deploy locally. But sometimes some jar files are not working as expected from my side.

Performance is good
This is a open source
we can build and deploy the code

Some jar files are not working
Compatibility issues
Need to improve documentation

Low maintenance cost
More development tools available
We can spend less time for installation

No license fees
We can install any number of systems
More tools avaliable

Oracle Java SE, Oracle Java Platform and Micro Edition

AngularJS, Jira Software, Microsoft Teams, GitHub

Open JDK Used to implement, monitor and and troubleshooting Java platform . The entire backend of the organization is Java based and is dependent on OpenJDK for development and Quality Assurance work . AWS is widely used for IAAS, deployment, and hosting purposes which integrates well with OpenJDK Red Hat provides long term support for OpenJDK starting version 7 .

Supports all Java features
Integration with AWS
Red Hat supports OpenJDK
Free and Open source, companies where there is no restriction must consider it

JVM performance can be improved
Concurrent task running needs to be improved .
Ability to access stack memory outside or JVM processes

OpenJDK

Overview

What is OpenJDK?