Open Source Java Software - Page 55
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Java Software
Browse free open source Java Software and projects below. Use the toggles on the left to filter open source Java Software by OS, license, language, programming language, and project status.
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PageFlip
3D Style Page Flip on Android
This project is aimed to implement 3D style page flip on Android system based on OpenGL 2.0. -
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Pinpoint
APM, (Application Performance Management) tool
Pinpoint is an APM (Application Performance Management) tool for large-scale distributed systems written in Java / PHP. Inspired by Dapper, Pinpoint provides a solution to help analyze the overall structure of the system and how components within them are interconnected by tracing transactions across distributed applications. Services nowadays often consist of many different components, communicating amongst themselves as well as making API calls to external services. How each and every transaction gets executed is often left as a blackbox. Pinpoint traces transaction flows between these components and provides a clear view to identify problem areas and potential bottlenecks. -
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Piper
A distributed workflow engine
Piper is a multimedia-focused tool designed to simplify audio and video processing workflows through streamlined command execution. It acts as a wrapper around FFmpeg-like utilities, enabling users to build pipelines for media transformation with reduced complexity. The project emphasizes automation and reproducibility, allowing consistent handling of media tasks across environments. It supports chaining operations such as encoding, filtering, and conversion in a structured manner. Piper is particularly useful for developers managing repetitive media processing jobs. Its design prioritizes clarity and efficiency in defining workflows. The tool bridges scripting convenience with powerful multimedia capabilities. -
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Pkl
A configuration as code language with rich validation and tooling
pkl is a purpose-built configuration-as-code language developed by Apple that combines declarative structure, validation, and tooling to improve over traditional configuration formats like JSON, YAML, or Plists. Its goal is to let you write configuration logic (modules, imports, conditions, defaults) while still producing static outputs suitable for tools that expect JSON, YAML, or other formats. Configurations in Pkl are type-safe and support validation constraints (e.g. bounds, relations) so many errors can be caught before deployment. The language is embeddable, meaning it can run inside applications (Java, Swift, Go, etc.) to load configuration dynamically with the same safety guarantees. There’s also code generation support: writing Pkl modules can generate matching classes or data structures in target languages (Swift, Go, Java, Kotlin) so runtime config and statically typed code stay in sync. -
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Playwright for Java
Java version of the Playwright testing and automation library
Playwright Java is the Java version of the Playwright testing and automation library, enabling reliable end-to-end testing for modern web applications. -
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Poli
An easy-to-use BI server built for SQL lovers. Power data analysis
An easy-to-use BI server built for SQL lovers. Power data analysis in SQL and gain faster business insights. Platform independent web application. Single JAR file + Single SQLite DB file. Get up and running in 5 minutes. PostgreSQL, Oracle, SQL Server, MySQL, Elasticsearch... You name it. No ETLs, no generated SQL, polish your own SQL query to transform data. Pixel-perfect positioning + Drag'n'Drop support to customize the reports and charts in your own way. Utilize the power of dynamic SQL with query variables to connect Filters and Charts. Capture the snapshot of historical data. Free up space in your own database. Three system level role configurations + Group based report access control. Custom the language pack and translations just for your audience. Auto refresh, drill through, fullscreen, embeds, color themes + more features in development. -
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Portfolio Performance
Track and evaluate the performance of your investment portfolio
Portfolio Performance: Track and evaluate the performance of your investment portfolio across stocks, cryptocurrencies, and other assets. Performance indicators like that True-Time Weighted Rate of Return or the internal rate of return ( Internal rate of return ) are calculated. Historical courses are automatically run by Yahoo Finance loaded or can be extracted from any HTML pages. Due to the open file format, all data is available as XML available or can be used as CSV be exported. Support for Rebalancing based on freely definable Asset allocations. With the help of the historical exchange rates of the European Central Bank ( ECB ) accounts and shares can be held in foreign currency. -
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Problem
A Java library that implements application/problem+json
Problem is a library that implements application/problem+json. It comes with an extensible set of interfaces/implementations as well as convenient functions for everyday use. It's decoupled from any JSON library but contains a separate module for Jackson. -
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ProgrammingFonts
This is a collection of programming fonts
This is a collection of programming fonts, just share this with the programmers. Now there are 108 kinds of fantastic fonts! If you have a try of another kind of programming font, maybe you can have a new different feeling of coding which will make you feel fabulous, so just have a try! Monospaced is the most important feature for programming fonts because monospaced fonts are easy for coding and must be easy to check or align or compare. Most of the important and popular programming languages are built on English characters, so the programming fonts must support English characters. All of the characters must be easily identified. There must be no confusion about some similar characters, such as l and 1, o and 0, i and l, and g and 9. -
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Proxyee
HTTP proxy server,support HTTPS & websocket
Proxyee is a JAVA-written HTTP proxy server library that supports HTTP, HTTPS, and WebSocket protocols, and supports MITM (Man-in-the-middle), which can capture and tamper with HTTP, and HTTPS packets. The CA certificate (src/resources/ca.crt) from the project needs to be imported to a trusted root certificate authority. The CA certificate (src/resources/ca.crt) from the project needs to be imported to a trusted root certificate authority. You can use the CertDownIntercept interceptor to enable the web certificate download feature. -
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Qualitis
Qualitis is a one-stop data quality management platform
Qualitis is a data quality management platform that supports quality verification, notification, and management for various datasource. It is used to solve various data quality problems caused by data processing. Based on Spring Boot, Qualitis submits quality model task to Linkis platform. It provides functions such as data quality model construction, data quality model execution, data quality verification, reports of data quality generation and so on. At the same time, Qualitis provides enterprise-level features of financial-level resource isolation, management and access control. It is also guaranteed working well under high-concurrency, high-performance and high-availability scenarios. -
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Quartz is a richly featured, open source job scheduling library that can be integrated within virtually any Java application - from the smallest stand-alone application to the largest e-commerce system. Quartz can be used to create simple or complex schedules for executing tens, hundreds, or even tens-of-thousands of jobs; jobs whose tasks are defined as standard Java components that may execute virtually anything you may program them to do. The Quartz Scheduler includes many enterprise-class features, such as support for JTA transactions and clustering.
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QuestDB
An open source SQL database designed to process time series data
QuestDB is a high-performance, open-source SQL database for applications in financial services, IoT, machine learning, DevOps and observability. It includes endpoints for PostgreSQL wire protocol, high-throughput schema-agnostic ingestion using InfluxDB Line Protocol, and a REST API for queries, bulk imports, and exports. QuestDB implements ANSI SQL with native extensions for time-oriented language features. These extensions make it simple to correlate data from multiple sources using relational and time series joins. QuestDB achieves high performance from a column-oriented storage model, massively-parallelized vector execution, SIMD instructions, and various low-latency techniques. The entire codebase was built from the ground up in Java and C++, with no dependencies, and is 100% free from garbage collection. We provide a live demo provisioned with the latest QuestDB release and sample datasets. -
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RSocket
Java implementation of RSocket
Application protocol providing Reactive Streams semantics. RSocket provides a protocol for Reactive Streams semantics between client-server, and server-server communication. RSocket is a binary protocol for use on byte stream transports such as TCP, WebSockets, and Aeron. RSocket is intended to be consumed via one of the various implementation libraries which implement the RSocket Protocol. By default to make RSocket easier to use it copies the incoming Payload. Copying the payload comes at cost to performance and latency. If you want to use zero copy you must disable this. To disable copying you must include a payloadDecoder argument in your RSocketFactory. This will let you manage the Payload without copying the data from the underlying transport. You must free the Payload when you are done with them or you will get a memory leak. Used correctly this will reduce latency and increase performance. -
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React Native Push Notifications
React Native local and remote notifications
React Native Local and Remote Notifications for iOS and Android. firebase-messaging, prior to version 15 requires to have the same version number in order to work correctly at build time and at run time. The Firebase Android library firebase-core is no longer needed. This SDK included the Firebase SDK for Google Analytics. Now, to use Analytics or any Firebase product that recommends the use of Analytics, you need to explicitly add the Analytics dependency. Example folder contains an example app to demonstrate how to use this package. Please test your PRs with this example app before submitting them. In the notifications options, you must provide a channel id with channelId: "your-channel-id", if the channel doesn't exist the notification might not be triggered. Once the channel is created, the channel cannot be updated. Make sure your channelId is different if you change these options. If you have created a channel in another way, it will apply options of the channel. -
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React Native Template TypeScript
Clean and minimalist React Native template for a quick start
This template offers a clean and minimalist setup for React Native projects using TypeScript. It provides a solid starting point for building type-safe mobile applications. -
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RedisClient
Java Redis Client GUI Tool
This is a redis client GUI tool written based on Java SWT and Jedis. It's my objective to build the most convenient redis client GUI tool in the world. In the first place, it will facilitate in editing redis data, such as: add, update, delete, search, cut, copy, paste etc. -
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Redisson
Valkey & Redis Java client. Real-Time Data Platform
Redisson is a Java client library for Redis that offers distributed data structures, services, and frameworks to build scalable and reliable applications. It simplifies Redis usage by providing in-memory Java objects like maps, sets, locks, queues, and semaphores that are backed by Redis. Redisson supports advanced features like distributed locking, asynchronous APIs, and integrates with frameworks like Spring and Quarkus for reactive and cloud-native development. -
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Regex
Generate matching and non matching strings based on regex patterns
Generate matching and non-matching strings. This is a java library that, given a regex pattern, allows to generation of matching strings. Iterate through unique matching strings. Generate not matching strings. Follow the link to Online IDE with created project: JDoodle. Enter your pattern and see the results. By design a+, a* and a{n,} patterns in regex imply an infinite number of characters should be matched. When generating data, that would mean values of infinite length might be generated. It is highly doubtful anyone would require a string of infinite length, thus I've artificially limited repetitions in such patterns to 100 symbols when generating random values. Use a{n,m} if you require some specific number of repetitions. It is suggested to avoid using such infinite patterns to generate data based on regex. -
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RoundCornerProgressBar
[Android] Round Corner Progress Bar Library for Android
Round corner is cool. Let's make your progress bar with round corner. Colorful rounded corner progress bar. -
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RuoYi Vue
Java rapid-development platform with separated architecture
RuoYi-Vue is an open-source Java rapid-development platform with separated frontend and backend architecture. Its backend uses Spring Boot, Spring Security, Redis, and JWT, with parallel branches for multiple Spring Boot generations. The classic frontend uses Vue, Element UI, Vuex, and Vue Router, while compatible Vue 3 variants are also available. It provides dynamic permission menus, role-based access control, multi-terminal authentication, and data-scope permissions. Built-in modules cover users, departments, positions, menus, roles, logs, scheduled jobs, monitoring, and system configuration. A code generator can create frontend and backend CRUD code to accelerate development of business and administrative systems. -
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RxJava
Reactive Extensions for the JVM
RxJava is a lightweight Java VM implementation of ReactiveX (Reactive Extensions). This is a library for the composition of asynchronous and event-based programs through observable sequences. It helps you write cleaner and simpler code by providing methods for solving problems quickly, and is easy to maintain and understand. RxJava works by extending the observer pattern in order to support sequences of data/events. It also allows you to compose sequences together declaratively through added operators, all while abstracting away concerns like low-level threading, thread-safety, concurrent data structures and synchronization. RxJava is commonly used for running simple background computations. It supports Java 6 or higher and languages that are based on JVM such as JRuby, Groovy and Clojure. -
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RxLifecycle
Lifecycle handling APIs for Android apps using RxJava
This library allows one to automatically complete sequences based on a second lifecycle stream. This capability is useful in Android, where incomplete subscriptions can cause memory leaks. You must start with an Observable<T> representing a lifecycle stream. Then you use RxLifecycle to bind a sequence to that lifecycle. It assumes you want to end the sequence in the opposing lifecycle event - e.g., if subscribing during start, it will terminate on stop. If you subscribe after pause, it will terminate at the next destruction event (e.g., pasue will terminate in stop). RxLifecycle does not actually unsubscribe the sequence. Instead it terminates the sequence. The way in which it does so varies based on the type. If a sequence requires the Subscription.unsubscribe() behavior, then it is suggested that you manually handle the Subscription yourself and call unsubscribe() when appropriate. -
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Sakura Boot
Framework on top of spring-boot that helps create back-ends
This framework, built on top of Spring Boot, is designed to speed up the development of robust backends. It ensures adherence to best practices while allowing a high degree of customization. The framework is structured using a modular architecture, making it easy to add or remove features based on the project’s specific needs. While Spring Boot speeds up the development process, developers still require extensive knowledge, must ensure adherence to best practices, and often write repetitive code for each project. First, the name Sakura Boot is named to reflect its foundation on Spring Boot, while "Sakura" symbolizing the brief cherry blossoms season in Japan, this highlights the framework’s focus on rapid and efficient backend development. -
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Saturn
The vip.com's distributed job scheduling platform
Saturn is a platform created by VIP.com to provide a distributed, fault-tolerant and high available job scheduling service.
