Java Library

Open-source Java projects categorized as Library

Top 23 Java Library Projects

  • BottomBar

    (Deprecated) A custom view component that mimics the new Material Design Bottom Navigation pattern.

  • FoldingCell

    :octocat: 📃 FoldingCell is a material design expanding content cell inspired by folding paper material made by @Ramotion

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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  • bitcoinj

    A library for working with Bitcoin

  • QR-Code-generator

    High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.

  • Project mention: How to make a QR code with Stable Diffusion | | 2023-06-11

    The funny thing is that no-one AFAICT has realized that the same content can be encoded in different-looking QR codes. Beside the obvious (different error-correction levels), the content itself can be changed while maintaining its semantic meaning (e.g. "", "HTTPS://EXAMPLE.COM/foo", or "HtTpS://eXaMpLe.CoM/foo" are all semantically identical) and even the QR encoding itself can be tweaked (e.g. by changing the version and mask, see the demo on Each combination would yield a different-looking QR code that would encode the same meaning, and it could therefore allow the diffusion models even greater freedom.

    I'm sure somebody will get to this soon.

  • Apache Shiro

    Apache Shiro

  • Project mention: Serverless Apache Zeppelin on AWS | | 2024-02-04

    The only missing feature in this architecture is the login and logout capability. In this case, Apache Zeppelin provides Shiro for notebook authentication. Apache Shiro is a powerful and easy-to-use Java security framework that performs authentication, authorization, cryptography, and session management. Here, you can find a step-by-step guide about how Shiro works. This example uses the default configuration.

  • Apache Log4j 2

    Apache Log4j 2 is a versatile, feature-rich, efficient logging API and backend for Java.

  • Project mention: Hackers exploited Windows 0-day for 6 months after Microsoft knew of it | | 2024-03-05

    I don't think that's a good example. While Apache devs are volunteers and Microsoft devs are employees, they were criticized for their slow response time and seeming lack of urgency until it was far too late.

  • FabulousFilter

    Android library to animate Floating Action Button to Bottom Sheet Dialog and vice-versa

  • WorkOS

    The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

    WorkOS logo
  • paper-onboarding-android

    :octocat: PaperOnboarding is a material design slider made by @Ramotion

  • Apache PDFBox

    Mirror of Apache PDFBox

  • Project mention: PDF rendering server-side using HTML 5 + CSS 3 | /r/java | 2023-12-11

    Are you looking for a way to render PDF's or produce them? If you want to produce PDF's, I've used successfully as well as (potentially costs money).

  • commonmark-java

    Java library for parsing and rendering CommonMark (Markdown)

  • Hyperion-Android

    App Debugging & Inspection Tool for Android

  • CircleMenu for Android

    :octocat: ⭕️ CircleMenu is a simple, elegant UI menu with a circular layout and material design animations. Android UI library made by @Ramotion

  • Apache POI

    Mirror of Apache POI

  • itext-java

    iText for Java represents the next level of SDKs for developers that want to take advantage of the benefits PDF can bring. Equipped with a better document engine, high and low-level programming capabilities and the ability to create, edit and enhance PDF documents, iText can be a boon to nearly every workflow.

  • Project mention: FastPDF Service API (Java) VS itext7 - a user suggested alternative | | 2023-12-07
  • easydeviceinfo

    :iphone: [Android Library] Get device information in a super easy way.

  • Bubble Navigation

    🎉 [Android Library] A light-weight library to easily make beautiful Navigation Bar with ton of 🎨 customization option.

  • Siddhi

    Stream Processing and Complex Event Processing Engine

  • CountryCodePickerProject

    Country Code Picker (CCP) is an android library which provides an easy way to search and select country or international phone code. Also supports Android EditText phone mask and international phone validation.

  • react-native-geolocation

    Geolocation APIs for React Native

  • material-about-library

    Makes it easy to create beautiful about screens for your apps

  • cordova-plugin-inappbrowser

    Apache Cordova InAppBrowser Plugin

  • MaterialFX

    A library of material components for JavaFX

  • Project mention: RecyclerView + Glide alternatives? | /r/JavaFX | 2023-07-10

    You can have a look at the VirtualizedFX which is a virtual flow that is written from scratch and inspired by Flowless. The author Palexdev (I think the person is on reddit), took inspiration from Flowless, and has documented the code quite well. You can have a look and also implement a virtual grid with it such as a GridView. Honestly, I tried making my virtual flow, that is simple with a few classes as possible (with adequate success), and the inspiration came from it. The VirtualizedFX has now been incorporated in MaterialFX which is another main project by the same author.

  • Code Scanner

    Code scanner library for Android, based on ZXing

  • SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

Java Library related posts


What are some of the best open-source Library projects in Java? This list will help you:

Project Stars
1 BottomBar 8,419
2 FoldingCell 4,888
3 bitcoinj 4,866
4 QR-Code-generator 4,831
5 Apache Shiro 4,254
6 Apache Log4j 2 3,266
7 FabulousFilter 2,677
8 paper-onboarding-android 2,557
9 Apache PDFBox 2,379
10 commonmark-java 2,167
11 Hyperion-Android 1,940
12 CircleMenu for Android 1,892
13 Apache POI 1,833
14 itext-java 1,827
15 easydeviceinfo 1,752
16 Bubble Navigation 1,734
17 Siddhi 1,493
18 CountryCodePickerProject 1,486
19 react-native-geolocation 1,228
20 material-about-library 1,123
21 cordova-plugin-inappbrowser 1,113
22 MaterialFX 1,085
23 Code Scanner 1,080

SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives