Top Open-Source Project Management Tools in 2025

Open-source project management tools are now a practical choice for many teams. In 2025, startups, small businesses, and large organizations are choosing tools they can run themselves, adjust to fit their work, and extend when needed.

This post looks at five open-source project management tools widely used in 2025. It also covers FlowInquiry Community Edition, a newer option focused on team workflows.

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1. Taiga

Overview
Taiga is a Python- and Django-based tool for agile project management. It supports Scrum and Kanban workflows. It also includes a task hierarchy—epics, stories, and tasks—and connects with GitHub, GitLab, and Slack.

Why It’s Still Used in 2025

• Supports Agile Workflows
  Sprint boards and velocity tracking are easy to set up and use.

• Flexible Through Plugins
  Teams can add features like time tracking and custom reports using plugins.

• Actively Maintained
  Taiga stays current with Python and Django. It has an official Docker image for deployment.

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2. OpenProject

Overview
OpenProject is a project management tool built with Ruby on Rails. It includes core features like task tracking, Gantt charts, and budgeting. It is used by teams that manage complex projects or need to meet compliance requirements.

Why It’s Still Used in 2025

• Enterprise-Level Features
  Paid modules support portfolios, timelines, and reporting across multiple projects.

• Modern Interface
  The UI was rebuilt in Vue.js in 2024. It loads faster and is easier to use.

• Built for Regulated Environments
  OpenProject meets standards like SOC2 and ISO-27001 while keeping the platform self-hosted.

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3. Redmine

Overview
Redmine is a Ruby on Rails–based project management tool. It supports multiple projects, access control by role, and a wide range of plugins.

Why It’s Still Popular in 2025

• Stable Core
  First released in 2006, Redmine remains dependable.

• Wide Plugin Support
  The plugin library includes agile tools, test case management, and time tracking.

• Multi-Language, Multi-Project
  Supports multiple languages and isolated project workspaces.

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4. Kanboard

Overview
Kanboard is a minimalist Kanban board tool written in PHP. It focuses only on task boards, columns, and basic project features. It works on low-resource systems.

Why It’s Still Popular in 2025

• Simple Setup
  Runs on small servers and loads quickly.

• Community Features
  Plugins allow task predictions, color-coded swimlanes, and auto-archiving.

• Embedding Support
  Teams display task boards inside dashboards using read-only widgets.

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5. FlowInquiry Community Edition (Newcomer)

FlowInquiry is a newer option built with a Next.js frontend and a Spring Boot backend. It combines project management with request tracking, notifications, and analytics.

What Stands Out

• Team-Oriented Design
  The platform focuses on team workflows. Teams can monitor throughput, manage SLAs, and adjust work based on capacity.

• Clear Interface
  The UI groups users, teams, and projects in one view. The Kanban board includes filters and drag-and-drop task updates.

• Real-Time Alerts
  FlowInquiry notifies users when tasks change, SLAs are near breach, or comments are added—via Slack or email.

• Built-In Metrics
  Teams can see velocity, resolution time, and task distribution. This helps find slowdowns and improve output.

• Efficient and Scalable
  FlowInquiry works on a small server. It also supports Kubernetes and Redis for larger use cases.

Installation

• FlowInquiry installs with a single command using Docker Compose.
• A Helm chart is available for Kubernetes.
• Upcoming support for AWS and Azure Marketplace installers.
• Hardware needs: 2 vCPU / 4 GB RAM is enough for most teams.

Who It’s For

• Teams That Prioritize SLAs
  Built-in tracking and notifications help ensure deadlines are met.

• Groups With Simple Infrastructure
  You can deploy without needing advanced DevOps skills.

• Teams That Prefer to Self-Host
  FlowInquiry uses AGPL v3. You control your data and any changes you make.

• Organizations Seeking Low Upkeep
  The system tracks updates and alerts admins when an upgrade is needed.

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Conclusion

By 2025, five open-source project management tools stand out:

• Taiga – agile-focused, plugin-friendly
• OpenProject – enterprise features and compliance
• Redmine – mature and highly extensible
• Kanboard – minimal and lightweight
• FlowInquiry – team-focused, simple to run, with built-in tracking

Each tool serves a different need. Taiga and Redmine work well for engineering teams. OpenProject fits structured, portfolio-driven work. Kanboard is ideal for simple setups. FlowInquiry bridges team collaboration and request tracking in a single platform.

If you want a project tool you can self-host and grow into, FlowInquiry is worth trying.