Self-hosted apps written in Java

DavMail

Calendar & Contacts·Java

POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to use any mail/calendar client with an E…

Metabase

Analytics·Java

Easy way for everyone in your company to ask questions and learn from data.

Mindustry

Games·Java

Factorio-like tower defense game.

Druid

Analytics·Java

Distributed, column-oriented, real-time analytics data store.

BigBlueButton

Communication - Video Conferencing·Java

Supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen.

GraphHopper

Maps and Global Positioning System (GPS)·Java

Fast routing library and server using OpenStreetMap.

Jitsi Video Bridge

Communication - Video Conferencing·Java

WebRTC compatible Selective Forwarding Unit (SFU) that allows for multiuser video communication.

Openfire

Communication - XMPP - Servers·Java

Real time collaboration (RTC) server.

OpenTripPlanner

Maps and Global Positioning System (GPS)·Java

Multimodal trip planning software based on OpenStreetMap data and consuming published GTFS-formatted data t…

DSpace

Document Management - Institutional Repository and Digital Library Software·Java

Turnkey repository application providing durable access to digital resources.

OpenRemote

Internet of Things (IoT)·Java

IoT Asset management, Flow Rules and WHEN-THEN rules, Data visualization, Edge Gateway.

Alf.io

Booking and Scheduling·Java

Ticket reservation system.

RStudio Server

Software Development - IDE & Tools·Java

Web browser based IDE for R.

Hyphanet

Communication - Custom Communication Systems·Java

Anonymously share files, browse and publish _freesites_ (web sites accessible only through Hyphanet) and ch…

Guacamole

Remote Access·Java

Clientless remote desktop gateway supporting standard protocols like VNC and RDP.

Peergos

File Transfer & Synchronization·Java

Secure and private space online where you can store, share and view your photos, videos, music and documents.

Openmeetings

Groupware·Java

Video conferencing, instant messaging, whiteboard, collaborative document editing and other groupware tools…

Tigase

Communication - XMPP - Servers·Java

XMPP server implementation in Java.

openHAB

Internet of Things (IoT)·Java

Vendor and technology agnostic open source software for home automation.

OFBiz

Resource Planning·Java

Enterprise Resource Planning system with a suite of business applications flexible enough to be used across…

Fedora Commons Repository

Document Management - Institutional Repository and Digital Library Software·Java

Robust and modular repository system for the management and dissemination of digital content especially sui…

OpenOLAT

Learning and Courses·Java

Learning management system for teaching, education, assessment and communication.

Stirling-PDF

Document Management·Java

Local hosted web application that allows you to perform various operations on PDF files, such as merging, s…

Alfresco Community Edition

Content Management Systems (CMS)·Java

The open source Enterprise Content Management software that handles any type of content, allowing users to…

Appsmith

Software Development - Low Code·Java

Build admin panels, CRUD apps and workflows.

Halo

Software Development - Low Code·Java

A powerful and easy-to-use website building tool (documentation in Chinese).

Thingsboard

Internet of Things (IoT)·Java

IoT Platform - Device management, data collection, processing and visualization.

BinPastes

Pastebins·Java

Minimal pastebin supporting client-side encryption, fulltext search, one-time messages.

OneDev

Software Development - Project Management·Java

All-In-One DevOps Platform.

OpenSearch

Search Engines·Java

Distributed and RESTful search engine.

Eclipse Che

Software Development - IDE & Tools·Java

Open source workspace server and cloud IDE.

Komga

Document Management - E-books·Java

Media server for comics/mangas/BDs with API and OPDS support, a modern web interface for exploring your lib…

Kill Bill

Money, Budgeting & Management·Java

Subscription billing & payments platform.

LanguageTool

Miscellaneous·Java

Proofread more than 20 languages.

Tolgee

Software Development - Localization·Java

Developer & translator friendly web-based localization platform enabling users to translate directly in the…

CommaFeed

Feed Readers·Java

Google Reader inspired self-hosted RSS reader.

OpenRouteService

Maps and Global Positioning System (GPS)·Java

Route service with directions, isochrones, time-distance matrix, route optimization, etc.

XWiki

Wikis·Java

Second generation wiki that allows the user to extend its functionalities with a powerful extension-based a…

Yacy

Search Engines·Java

Peer based, decentralized search engine server.

Fess

Search Engines·Java

Powerful and easily deployable Enterprise Search Server.

Scoold

Communication - Social Networks and Forums·Java

Stack Overflow in a JAR.

Jelu

Miscellaneous·Java

Read and to-read list book tracker.

Para

Software Development - API Management·Java

Flexible and modular backend framework/server for object persistence, API development and authentication.

Gerrit

Software Development - Project Management·Java

Code review and project management tool for Git-based projects.

OpenELIS Global

Health and Fitness·Java

Laboratory information system (LIS/LIMS) for clinical, public health, environmental and vector surveillance…

ClipCascade

Miscellaneous·Java

Syncs your clipboard across multiple devices instantly, without any button press.

SCM Manager

Software Development - Project Management·Java

The easiest way to share and manage your Git, Mercurial and Subversion repositories over http.

re:Director

Miscellaneous·Java

Simple domain redirection management tool.

Atsumeru

Document Management - E-books·Java

Manga/comic/light novel media server with clients for Windows, Linux, macOS and Android.

Apache Solr

Search Engines·Java

Enterprise search platform featuring full-text search, hit highlighting, faceted search, real-time indexing…

Pastefy

Pastebins·Java

Beautiful, simple and easy to deploy Pastebin with optional client encryption, multitab pastes, an API, a h…

SIP3

Communication - SIP·Java

VoIP troubleshooting and monitoring platform.

Traccar

Maps and Global Positioning System (GPS)·Java

Java application to track GPS positions.

Zimbra Collaboration

Groupware·Java

Email, calendar, collaboration server with Web interface and lots of integrations.