Apache Answer Alternatives (September 2025)

Apache Marmotta - An Open Platform for Linked Data - Home

Apache CloudStack is an opensource infrastructure-as-a-service cloud computing platform that is easy to use, turnkey, highly available and highly scalable.

A cross-language development platform for in-memory analytics

Apache Object Oriented Data Technology (OODT) is the smart way to integrate and archive your processes, your data, and its metadata. It facilitates the generation, processing, management, distribution, analysis of data management, data archiving, and data analytics systems allowing for the integration of data, computation, visualization and other components.

Open-Source, Full-Stack Microservice Solution.With out of the box, high performance, compatible with popular ecology, multi-language support Get started

Build, strengthen and engage your community through Q&A help forum, blog posts and newsletters.

Apache Geronimo web site

Apache Kafka: A Distributed Streaming Platform.

Apache Eagle - Analyze Big Data Platforms For Security and Performance

Apache ServiceMix - An open-source integration container

All-in-One knowledge management system, combine Wiki, Q&A and AI with built-in workflow. Knowledge Management System - Wiki + Q&A + Workflow + AI

Discover Zapnito, your customer community platform built for personalized knowledge sharing experiences. Maximize customer lifetime value.

A flexible messaging platform that enables real-time integration and connects the Internet of Things (IoT).

Discourse is modern forum software for your community. Use it as a mailing list, discussion forum, long-form chat room, and more!

Apache PredictionIO® Open Source Machine Learning Server

Drive organic connections and create positive impact across your community with Hivebrite — the easy to set up, highly customizable community engagement platform.

Apache TomEE is a lightweight, yet powerful, JavaEE Application server with feature rich tooling.

Open source software which you can use to easily create a beautiful website, blog, or app.

Apache Beam is an open source, unified model and set of language-specific SDKs for defining and executing data processing workflows, and also data ingestion and integration flows, supporting Enterprise Integration Patterns (EIPs) and Domain Specific Languages (DSLs). Dataflow pipelines simplify the mechanics of large-scale batch and streaming data processing and can run on a number of runtimes like Apache Flink, Apache Spark, and Google Cloud Dataflow (a cloud service). Beam also brings DSL in different languages, allowing users to easily implement their data integration processes.

Looking for knowledge base software? Create a website to share information with customers, clients, employees, and others. Free trial, no credit card required.

TYPO3 is a free enterprise-class CMS based on PHP. It combines open source code with reliability and true scalability. This is the official project website.

Drupal is an open source platform for building amazing digital experiences. It's made by a dedicated community. Anyone can use it, and it will always be free.

Higher Logic Vanilla is the all-in-one community platform designed to help you and your customers succeed. Book a demo today!

Redpanda is a powerful, simple, and cost-efficient streaming data platform that is compatible with Kafka® APIs while eliminating Kafka complexity.

官方网站

Confluent makes it easy to connect your apps, data systems, and entire business with secure, scalable, fully managed Kafka and real-time data streaming, processing, and analytics.

OneOps is a cloud management platform that enables organizations to manage applications and infrastructure at scale.

Build your application on Instaclustr's fully hosted and managed Apache Kafka as a service solution. Start your free trial now.

Instantly create a knowledge base for your customers and teams. Build FAQ, User guides, Product Documentation, Standard Operating Procedures and many more

Superdesk is an open source headless CMS for news organisations and publishers. Speed up workflows and cut costs with our scalable newsroom software.

phpFox is the best social network platform to build your own online communities easily; encourages users to interact and engage with much fun.

Free interactive presentation software. Live polls, quizzes, beautiful real-time charts & word clouds. No installation, no download, easy to use.

Tendenci is The Open Source Association Management Software and All-In-One Membership Management solution for nonprofit organizations and cause-related associations to manage their websites. Built for multi-chapter national and international organizations. Features include membership management, event management, business directories, rich media, and much more.

Kubernetes message broker and message queue platform. An open-source project providing the most efficient way to connect microservices.

Qooper mentoring software is the best mentoring software to run mentorship, learning and inclusion programs with best practices, software solutions and analytics.

Bring together engaging discussions, members, live streams, chat, events, and memberships—all in one place, all under your own brand. Learn more.

Get the world's best supported build of OpenJDK with Azul. See how Azul Platform Core can help you deliver secure & stable Java with 90% lower licensing costs.

Discover why our easy creation, organization, and numerous integrations, make us so popular with non-technical and tech-savvy teams alike.

ONEsite provides leading Social Network Software with community, profiles, forums, single sign on, comments, loyalty and APIs.

OpenStack is an open source cloud computing infrastructure software project and is one of the three most active open source projects in the world.

Platform created by the community to programmatically author, schedule and monitor workflows.

Our API Management platform is fast, scalable, modern. Including an open source API Gateway, Analytics, Dev Portal and Dashboard.

Brightidea is a top rated idea management and innovation management software for innovation teams. Designed to power innovation and crowdsource tomorrow's ideas today.

Use Morweb CMS to build a custom website for your nonprofit or association. Grow your membership or donations with our intuitive, all-in-one platform.

AWStats Official Web Site - Compile and generate advanced graphical web, ftp or mail statistics with a logfile analysis (For IIS, Apache,... distributed under GNU GPL).

The software solution designed to drive software development Bugzilla lets you plan, organize and release software on your own teams' schedule...

Piazza is a free online gathering place where students can ask, answer, and explore 24/7, under the guidance of their instructors. Students as well as instructors can answer questions, fueling a healthy, collaborative discussion.

Browse our developer-first, open source application delivery & hosting platform. Discover unmatched flexibility, up to 99.99% uptime, & exceptional support

Answerbase's AI-enhanced helpful content platform auto-generates and auto-optimizes helpful content, providing measurable lift in SEO and conversion.

Struggling with disengaged or bored attendees? Use Pigeonhole Live's free Q&A, polls, word clouds & quizzes for better participation and instant feedback.

An open source Kubernetes Platform to manage enterprise-grade Kubernetes across hybrid cloud, multi-cloud and edge. Get started for free!

The most popular open source content collaboration platform for tens of millions of users at thousands of organizations across the globe

Apex is an enterprise grade native YARN big data-in-motion platform that unifies stream processing as well as batch processing.

Strapi is the next-gen headless CMS, open-source, javascript, enabling content-rich experiences to be created, managed and exposed to any digital device.

An open-source Backend-as-a-Service stack for web & mobile applications, based on RESTful APIs.

Make your learning unmissable through Vevox's #1 live polling and Q&A app to make hybrid classes, workplace training and classes inclusive. Sign up for your free today.

Engage, empower and align your team, wherever work is happening. Enable collaboration with polls, surveys, Q&A, suggestion boxes, team building, and more!

A new open source Apache Hadoop ecosystem project, Apache Kudu completes Hadoop's storage layer to enable fast analytics on fast data

Scannable helps Arborists, Rope Access Technicians, Riggers, and Rescuers easily manage PPE and safety equipment.

Apache Mesos abstracts resources away from machines, enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.

Increase deal velocity with web-based proposal software. Get real-time buyer analytics. Start your free 14-day trial with Qwilr.

MantisBT is a popular free web-based bug tracking system. It is written in PHP works with MySQL, MS SQL, and PostgreSQL databases. MantisBT has been installed on Windows, Linux, Mac OS, OS/2, and others. It is released under the terms of the GNU General Public License (GPL).

Mattermost is a secure collaboration platform for accelerating mission critical work in complex environments.

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

Playvox Quality Management (QM) helps contact centers improve service as they scale. From setting goals to workload assignments, go beyond QA.

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

QorusDocs AI proposal management software empowers your team to create beautiful, accurate responses to proposals, presentations and RFP responses.

Concrete CMS is an open source content management system for teams. A website builder with built in tools make editing content easy.

Ask a question, and Qatalog becomes your trusted knowledge navigator — instantly delivering accurate answers. Powered by AI.

Boost performance and engagement with Qarrot's Employee Recognition Platform. Strengthen workplace culture and values with our powerful tools.

Red Hat OpenShift Streams for Apache Kafka makes it easier to create, discover and connect to real-time data streams regardless of where they exist.

Open source project management software for classic, agile or hybrid project management: task management✓ Gantt charts✓ boards✓ team collaboration✓ time and cost reporting✓ FREE trial!

Apache NetBeans

HelpSite is easy-to-use hosted knowledge base software for creating an awesome support & FAQ site for your business. Get started for free!

Discover the TIBCO® Platform––Messaging for seamless, real-time data distribution across your enterprise. Our platform offers diverse messaging components like TIBCO Enterprise Message Service™, TIBCO® Messaging Quasar, and more, ensuring high-performance, secure, and reliable data exchange for complex IT environments. Explore our solutions tailored for cloud integration, IoT, and event-driven architectures

Online Enterprise Audience Response Software System With Engagement Tools To Increase Audience Participation at Your Meetings, Conferences & Events!

An open source community working under The Linux Foundation to address storage integration challenges in scale-out cloud native environments. Its vision is to connect siloed data solutions to build a self governed and intelligent data platform.

Unlock the full potential of Apache Airflow® with Astronomer’s managed platform. Ensure reliable data delivery, seamless integrations, and dynamic scaling to power your data products and AI. Trusted by top data teams globally.

A powerful CMS, BaaS, and more. Power any project with Directus – a composable data platform to easily create and deploy data-rich apps.

Discover Alumni Reach, the ultimate cloud-based platform for enhancing alumni networks. Tailored for corporates, educational institutions, and professional communities, our platform offers advanced tools for profile assessment, targeted communication, and engagement gamification.

Smartsheet enables teams to manage projects, automate processes & scale programs in one powerful platform. Maintain visibility & keep distributed teams connected.

Fun & flexible software for online communities, teams, and groups

Create a free gantt chart online in minutes with TeamGantt. Our gantt chart maker is easy to use with drag & drop scheduling—no downloads or training required.

Help Desk Software For Personal And Connected Customer Service. Deliver exceptional customer service in multiple languages across live chat, email, Facebook and Twitter.

Experts Exchange is the Q&A community for people tired of the AI sellout. It's the best place to connect with experts who can answer tough technology questions.

Webiny is an open source serverless CMS that offers you all the enterprise-grade functionalities, while keeping your data within the security perimeter of your own infrastructure

Home of the XWiki and CryptPad Open Source projects. Looking to organize your information better? XWiki SAS's team of professionals is the best solution for you and your team. Ready-to-use or Customized. On-Premise or hosted in Cloud.

IntenseDebate's comment system enhances and encourages conversation on your blog or website.

HelpDocs creates knowledge base software your customers and team will adore. It's fast, flexible, and super simple to use. Start with 14 days free.

Teamvate is an employee experience platform to engage and build a culture in your organisation. Launch branded apps and control your entire organisation from a user-friendly interface. Enjoy email free communication and increase you ROI.

TestRail is a test management platform that helps you streamline your software testing processes, get visibility into QA, and release high-quality software.

GlobaLeaks - Free and Open-Source Whistleblowing Software

Autify - Revolutionizing Software Testing with the most advanced AI-powered Software Testing Tool

Explore Rocket.Chat, where we put data privacy into every conversation and enable teams to collaborate seamlessly.

Red Hat Enterprise Linux is a stable, proven foundation that’s versatile enough for rolling out new applications, virtualizing environments, and creating a more secure hybrid cloud.

.NET is a free, cross-platform, open-source developer platform. .NET has languages, editors, and libraries to build for web, mobile, desktop, games, and IoT.

Conferences i/o delivers the best audience engagement platform for Conferences, Meetings and events, Continuing Educationa and Hybrid/Live stream Events with Live Audience Response and Polling Software

Alpaquita Linux is the Alpine-based build fine-tuned for Java with glibc and musl support. Ideal for cloud deployment, containers, and native images.

Discover the easiest way to manage your compliance. Isolocity's automated quality management software is an all-in-one QMS solution.