18 Best Open Source Project Management Software Reviewed in 2026

OpenProject makes my list because it covers Agile workflows in a way that’s rare among open source project management platforms. When I see teams working in sprints and needing product backlogs, story points, and burndown charts without paying for a proprietary tool, this is where I send them.

I appreciate how OpenProject enables real project planning, roadmap visualization, and collaborative backlog grooming—all while letting you self-host and control your data.

OpenProject’s Best For

• Agile product and engineering teams that want backlog and sprint planning
• Organizations needing open source, on-premise project management

OpenProject’s Not Great For

• Teams who want simple task lists or kanban boards only
• Project managers needing advanced time tracking or portfolio management

What sets OpenProject apart

OpenProject approaches project management with a clear emphasis on Agile methodology, inviting teams to break work into sprints and track progress across product backlogs. Compared to Jira, it stands out by giving you full control over how you host and customize the environment. I see this working best for organizations that prioritize data privacy and want access to every layer, right down to the code.

Tradeoffs with OpenProject

OpenProject optimizes for flexibility in Agile processes, but you lose out on native advanced time tracking and portfolio features, which can hold back larger teams seeking those built-in controls.

Odoo makes my shortlist because it's one of the few open source solutions that actually covers business management end to end, not just project work. I recommend it when teams need project tracking tied directly into accounting, CRM, and inventory in one system.

What I like is how you can run everything—from resource scheduling to invoicing—without juggling multiple tools. It’s best when you want project management baked into your business’s daily workflows.

Odoo’s Best For

• Businesses needing project management integrated with ERP features
• Organizations that want open source control across all operations

Odoo’s Not Great For

• Small teams wanting a quick, lightweight project tool
• Anyone looking for built-in agile or kanban-specific functionality

What sets Odoo apart

Odoo approaches project management as one component inside a larger business platform. You run projects alongside CRM, invoicing, and inventory, with each element sharing data and status. Unlike something like Jira, which centers on technical delivery and agile boards, Odoo expects you to treat project work as just one part of running your business. In practice, this suits companies that want management, sales, and operations in a single place.

Tradeoffs with Odoo

Odoo optimizes for breadth across business functions, which makes project management feel less specialized and flexible. If you need advanced methodologies or niche features, you’ll notice those limits quickly.

Redmine makes the list because it’s the most extensible open source project management platform I’ve used. The sheer amount of plugins lets you adapt it to fit almost any project process, from agile boards to help desk workflows or test case tracking. I especially appreciate how you can build out custom automations or integrations that go way beyond what most competitors offer.

When teams outgrow limits set by other tools, Redmine is the one I see project managers use to shape processes precisely how they need.

Redmine’s Best For

• Teams needing custom workflows or specialized project processes
• Organizations that value extensive plugin options and custom features

Redmine’s Not Great For

• Teams wanting a modern, intuitive user interface
• Groups that prefer out-of-the-box project templates without setup

What sets Redmine apart

Redmine is built around the idea that you’ll shape the tool around your process, not the other way around. Unlike Jira, which pushes teams toward a particular workflow, Redmine hands you a blank slate and a deep library of plugins to fill any gaps. In practice, this makes it the go-to for project managers who want to solve specific problems with tailor-made setups instead of changing how their teams work.

Tradeoffs with Redmine

Redmine optimizes for customization but sacrifices a modern user experience, so teams often spend more time configuring and maintaining the system than actually running projects.

Taiga earns a place on my list because it’s one of the most approachable open source tools for startups that need real project tracking without heavy process overhead. I like how Kanban and Scrum are both well-supported, making it easy for small teams to adapt quickly as priorities shift.

Where Taiga stands out for me is its focus on usability for small teams who need core agile features like backlog management and sprint boards, without getting lost in configuration or complexity.

Taiga’s Best For

• Small teams using agile methods like Scrum or Kanban
• Startups needing lightweight open source project tracking

Taiga’s Not Great For

• Enterprises with strict compliance or reporting needs
• Teams needing sophisticated portfolio management features

What sets Taiga apart

Taiga is built for teams that want agile project management with as little friction as possible. It takes a different approach than Jira by reducing process complexity and focusing on getting simple Kanban and Scrum boards running fast. I see smaller startups thrive in Taiga because it expects you to get started quickly, refine your workflow over time, and not worry about fitting into a rigid system or dealing with advanced configuration.

Tradeoffs with Taiga

Taiga optimizes for speed and simplicity, so you lose advanced reporting and portfolio management features larger organizations rely on for oversight and compliance.

Plane makes the cut for its unique combination of open source flexibility and real-time collaboration. When your team wants to replicate the fast feedback cycles of co-located work, Plane’s live whiteboards and multiplayer task updates shine. What I appreciate here is how everyone can contribute to project boards at once, which helps distributed teams keep energy levels up and communication clear.

Plane’s Best For

• Distributed teams needing real-time co-editing and feedback
• Projects focused on collaborative planning and live task updates

Plane’s Not Great For

• Teams needing deep portfolio management features
• Organizations with strict, formal project governance needs

What sets Plane apart

Plane is all about capturing fast-moving teamwork in one space, like a multiplayer game. Instead of structured ticket systems like Jira, Plane emphasizes live editing and collaborative whiteboards, inviting everyone to interact with tasks at the same time. I find this really changes the dynamic when teams want spontaneity, overlap, and shared visibility, rather than rigid, step-by-step workflows.

Tradeoffs with Plane

Plane optimizes for active, ongoing collaboration, but that approach means you lose formal controls and process rigor, making it less suited to teams with strict compliance or reporting needs.

Leantime earns a spot on my list for putting lean methodology at the center of every feature. I think it’s a solid fit when you want kanban, goal-setting, and retrospectives in a single interface. Teams use it to move from ideas through experiments to delivery without losing sight of why each task matters.

What I appreciate most is how Leantime integrates research boards and hypothesis-driven planning, making it easier for teams to continuously learn and adapt.

Leantime’s Best For

• Teams practicing lean or agile project management
• Organizations running experiments and hypothesis-driven work

Leantime’s Not Great For

• Projects requiring advanced resource management
• Organizations needing strict compliance or audit trails

What sets Leantime apart

Leantime structures every part of project work around lean thinking. Where Jira assumes you want granular control over every workflow, Leantime strips away extra process so you can focus on moving ideas to experiments. In practice, this works best for groups who track research, validation, and delivery together without jumping between separate tools.

Tradeoffs with Leantime

Leantime optimizes for lean project cycles, but you lose advanced portfolio and resource management tools, which can matter if you need to coordinate large, multi-team programs.

Project Libre AI lands on my shortlist because it’s the first open source project management tool I’ve seen that directly embeds AI-driven insights. Teams using Gantt charts, resource allocation, and task tracking can get trend analysis and project health updates automatically as they go.

What I appreciate is how the AI layer kicks in fast, detecting bottlenecks and flagging risks on real project plans without manual setup.

Project Libre AI’s Best For

• Project managers who want built-in AI prioritization
• Open source users needing Gantt, resource, and task management

Project Libre AI’s Not Great For

• Teams expecting Kanban or agile-first project boards
• Organizations needing out-of-the-box portfolio management

What sets Project Libre AI apart

Project Libre AI stands out by embedding AI insights right into core project management workflows. Instead of making you run separate reports or plug in third-party analytics, the tool brings forecasting and risk detection right into traditional Gantt and resource planning views. Compared to tools like OpenProject or ClickUp, Project Libre AI expects you to manage work in a structured, timeline-driven manner while surfacing project issues and suggestions as you plan.

Tradeoffs with Project Libre AI

Project Libre AI optimizes for traditional project planning with AI support, so you lose flexible, card-based task management found in tools like Trello or modern agile platforms. If you rely on visual boards for daily work, it can feel limiting.

Tillywork is on my list because it handles repetitive project workflows through code-free, visual task automation that I find both accessible and flexible. I suggest it when teams outgrow manual task lists and want to map automations to fit real-world processes or chain together actions across tools.

What I appreciate about Tillywork is how you can design and monitor automations side-by-side with tasks, so project managers can tweak and optimize flows as work evolves.

Tillywork’s Best For

• Teams automating multi-step, repetitive project tasks
• Organizations that favor visual workflow design over manual task updates

Tillywork’s Not Great For

• Projects requiring advanced resource management features
• Teams looking for out-of-the-box reporting and analytics

What sets Tillywork apart

Tillywork is built for teams that want to automate project tasks with a drag-and-drop, visual approach, letting you chain actions without coding. Unlike Jira, which expects you to build everything from structured fields and plugins, Tillywork bets on letting you map workflows visually so non-technical users can experiment and refine automations as processes change.

I like that it places workflow creation front and center, making it straightforward to iterate.

Tradeoffs with Tillywork

Tillywork optimizes for hands-on workflow design, but you give up native resource management and in-depth reporting. You’ll need other tools if those are must-haves.

Huly makes my list for its focus on remote collaboration that noticeably goes beyond what most open source options provide. I think teams who struggle to keep everyone aligned across time zones will really value features like real-time multi-user editing, built-in video meetings, and collaborative whiteboards.

What I like most is how workspaces pull tasks, chat, and collaborative docs together, which means your team stops flipping between tools when working on the same project.

Huly’s Best For

• Distributed teams prioritizing live collaboration and remote project work
• Use cases needing shared docs, video calls, and real-time editing

Huly’s Not Great For

• Teams needing detailed, hierarchical project structuring
• Organizations requiring advanced portfolio or resource management

What Sets Huly Apart

Huly assumes remote-first teams want everything project-related in one workspace rather than split between many apps. Instead of juggling a stack like Slack, Google Docs, and Miro, you work natively inside Huly for chat, planning, docs, and video calls. The design feels intentionally built around live, group interaction—something I rarely see to this degree in open source platforms.

Tradeoffs with Huly

By optimizing for live, collaborative workspaces, Huly sacrifices features for complex project portfolios and granular reporting. If you need traditional PM controls or layered project tracking, you’ll likely outgrow it.

Bitrix24 makes sense for this list because it’s the open source platform I see teams reaching for when remote collaboration and integrated communication tools are non-negotiable. With built-in chat, video calls, document sharing, and a task board that’s easy to link with those features, it keeps distributed teams moving together.

What sets it apart for me is how you can spin up a shared online workspace that puts chat threads, video meetings, and files directly next to project tasks—nothing gets lost. I really appreciate how it removes friction for teams spread across time zones.

Bitrix24’s Best For

• Distributed teams needing chat, video, and project tools together
• Organizations prioritizing real-time collaboration in remote setups

Bitrix24’s Not Great For

• Teams needing highly specialized project management features
• Engineering groups with complex, code-centric workflows

What sets Bitrix24 apart

Bitrix24 is built around putting communication and project tools side by side, so you get chat, video, file sharing, and tasks all in the same space. This works especially well when you need a central online hub rather than bouncing between apps. Compared to something like Jira, Bitrix24 expects more real-time teamwork and conversation embedded directly into the project workspace.

Tradeoffs with Bitrix24

Bitrix24 optimizes for unified team communication, but that comes at the expense of deep, specialized project management features. If your work depends on advanced scheduling or custom workflows, you’ll find those options limited.