Best Open Source Libraries 2026

Libraries

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Browse free open source Libraries and projects for Windows and Mac below. Use the toggles on the left to filter open source Libraries by OS, license, language, programming language, and project status.

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FusionAuth: Authentication and User Management Software
Offer your users flexible authentication options, including passwords, passwordless, single sign-on (SSO), and multi-factor authentication (MFA).

FusionAuth adds login, registration, SSO, MFA, and a bazillion other features to your app in days - not months.

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1

Almond Framework

Almond Java Application Framework is an easy to use Swing based framework for Java applications. Almond is very much inspired by the K Desktop Environment.

Downloads: 0 This Week

Last Update: 2013-04-26
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2

Cloud7

Central Software Configuration by Java API and SOAP Service

CLOUD SEVEN is API and middleware together. C7 * stores central configurations in a database * is a useful tool to configure applications which run distributed on different hardware * provides a simple user administration with rights and actions * is good for small and big companies as well. * helps developers, and admins * provides configurations which can be valid for all machines (instances) or may be exclusive for single instances * can be used by API and SOAP (JMS is planned) * provides high performance and stable applications by using local configuration caching * offers complex configuration objects by combining some properties * uses actual optional Apache Derby, MySQL and Oracle (PostgreSQL in work)

Downloads: 0 This Week

Last Update: 2014-01-23
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3

JUnit-Penetration

A test framework for penetration testing Java classes and methods with randomized parameters and testing the results.

Downloads: 0 This Week

Last Update: 2014-07-22
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4

RCER

RCER is a SAP R/3 Connector for Eclipse Rich Client Platform applications. It wraps up the SAP Java Connector (JCo) in a reusable way and provides additional common functions like connection definition, login dialog and status monitoring.

Downloads: 0 This Week

Last Update: 2013-11-19
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AI-First Supply Chain Management
Supply chain managers, executives, and businesses seeking AI-powered solutions to optimize planning, operations, and decision-making across the supply

Logility is a market-leading provider of AI-first supply chain management solutions engineered to help organizations build sustainable digital supply chains that improve people’s lives and the world we live in. The company’s approach is designed to reimagine supply chain planning by shifting away from traditional “what happened” processes to an AI-driven strategy that combines the power of humans and machines to predict and be ready for what’s coming. Logility’s fully integrated, end-to-end platform helps clients know faster, turn uncertainty into opportunity, and transform the supply chain from a cost center to an engine for growth.

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5

Survey Developer Library 4 Java

Java framework with reusable patterns and classes

A generic Java framework with reusable patterns and classes for enhanced development

Downloads: 0 This Week

Last Update: 2014-04-27
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