Language
8 products in the Niched research set record Java as their primary language. This is a facet of the directory, not a ranking. Ordering follows repository stars, which describe traction and nothing else.
Back to the full directory →Event Driven Orchestration & Scheduling Platform for Mission Critical Applications. kestra is open source, written primarily in Java, released under Apache License 2.0. Its repository has 27.5K GitHub stars and 2.8K forks, and was last committed to within the last two weeks. Niched places it in Scheduling & booking.
Enterprise-grade, commercial-friendly agentic workflow platform for building next-generation SuperAgents. astron-agent is open source, written primarily in Java, released under Apache License 2.0. Its repository has 9.3K GitHub stars and 875 forks, and was last committed to within the last two weeks. Niched places it in AI agents & autonomous workflows.
Open-Source Subscription Billing & Payments Platform. killbill is open source, written primarily in Java, released under Apache License 2.0. Its repository has 5.6K GitHub stars and 947 forks, and was last committed to within the last two weeks. Niched places it in Payments & billing infrastructure.
We do Open Source ERP - Fast, Flexible & Free Software to scale your Business. metasfresh is open source, written primarily in Java. Its repository has 2.4K GitHub stars and 804 forks, and was last committed to within the last two weeks.
HiMarket is an enterprise-level "AI Capability Marketplace and Developer Ecosystem Hub." It is not merely a simple aggregation of traditional APIs, but rather a comprehensive platform that packages, publishes, manages, a. himarket is open source, written primarily in Java, released under Other. Its repository has 1.3K GitHub stars and 164 forks, and was last committed to within the last two weeks. Niched places it in API & integration platforms.
HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform. hivemq-community-edition is open source, written primarily in Java, released under Apache License 2.0. Its repository has 1.2K GitHub stars and 286 forks, and was last committed to within the last two weeks.
Open-source platform that unifies AI agent orchestration and workflow automation — autonomy and precision in one platform. bytechef is open source, written primarily in Java, released under Other. Its repository has 923 GitHub stars and 161 forks, and was last committed to within the last two weeks. Niched places it in Workflow automation (Zapier-style).
IoT DC3 is a fully open-source, distributed industrial IoT platform built on Spring Cloud and evolving for AI scenarios. It enables rapid IoT project development and connected-device management as a complete IoT system s. iot-dc3 is open source, written primarily in Java, released under Other. Its repository has 658 GitHub stars and 228 forks, and was last committed to within the last two weeks.