Free Software for Java
OpenCMS
OpenCMS is based on Java and XML technology that allows you to build highly customizable and interactive websites and portals. The open-source content management system includes a WYSIWYG editor and fully-featured Template Engine which is fully compliant with W3C standards.
dotCMS
A hybrid content management system that includes classic CMS and Headless CMS features. With dotCMS content managers can create content that fuels the brand experience. The API-first approach provided by the headless part of dotCMS allows developers to build extremely fast front-ends with popular third-party front-end framework and deliver content optimally. The content management system allows content creators to build engaging and memorable content that can be reused across sites.
QuestDB
QuestDB is a relational column-oriented time series database designed for real-time analytics on time series and event data. It uses the SQL language and include extensions for time series data. QuestDB is released as free and open source software and distributed as a single binary including a trimmed version of the JVM (Java Virtual Machine) weighing in at only 24.5 MB.
Play Framework
A framework designed to make it easy to build web applications with Java & Scala. The Play Framework is is based on a lightweight, stateless, web-friendly architecture that follows a model-view-controller (MVC) pattern. While providing predictable and minimal resource consumption (CPU, memory, threads) suitable for highly-scalable applications. Play is written in Scala and can be used for all programming languages that can be compiled into JVM bytecode.
JDownloader
JDownloader is a free, open-source download management tool with a huge community of developers that makes downloading as easy and fast as it should be. Users can start, stop or pause downloads, set bandwith limitations, auto-extract archives and much more.
Grails
Grails is powerful Groovy-based web application framework for the JVM built on top of Spring Boot.
BuddyCloud
Buddycloud is an open source project that helps developers add chat, video and social features to their app without being locked into a proprietary solution. With BuddyCloud it's easy to build communities that facilitates rich communication. The open-source toolset is written in Java and is designed to scale well and save you your team time, when building an online community.
Apache NiFi
With Apache NiFi you can automate the flow of data between software systems. Apache NiFi supports powerful and scalable directed graphs of data routing, transformation, and system mediation logic. Apache NiFi is highly configurable and provides an intuetive web-based user inferface that can be used to control and monitor your data flow. The software is developed by the Apache Foundation and released free and open-source under the Apache License 2.0.
Callmechat
Web Cam Service for Video Session with High Quality Solution #1 The best search system for specific purposes. Improved tools for creating individual profile, researching and maintaining contacts. High resolution audio and video transmission in real time. Callmechat was launched in 2007 and is now available in 80 countries. The site's popularity is based on the fact that it requires a paid subscription and charges per message. You can choose between male and female members and chat with them. You can also choose your relationship goals on this website. The best dating website for you depends on your goals and needs. The site has 60 million members worldwide and claims to find love every 14 minutes. It's easy to find your soul mate on Callmechat.