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Mantis vs OpenProject

Side-by-side comparison of features, pricing, ratings, and alternatives.

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Mantis
MantisWeb-based issue tracking and project management tool
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OpenProject
OpenProjectFree and open source project management software
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Overview
Description

Mantis is a free, open-source, web-based issue tracking and project management tool. It is written in PHP and supports multiple databases. Mantis is suitable for a variety of organizations, from small startups to large enterprises, and is widely used in software development, IT, and other industries.

OpenProject is a free and open source project management software that offers a range of features to support project planning, team collaboration, and project tracking. It is designed to be highly customizable and scalable, making it suitable for a wide range of projects and teams.

Pricing
Free
Free
Category
Project Management
Project Management
Best for
Software development teams and IT professionals
Freelancers and small teams
Specifications
Spec source
AI-estimated
AI-estimated
deployment
Self-hosted
—
open source
Yes
Yes
github stars
1,191
15,588+1209%
api available
Yes
Yes
support options
Email, Community Forum
Email, Community Support
key integrations
Git, SVN, MySQL, PostgreSQL
Git, SVN, LDAP
primary language
Swift
Ruby
Pros & Cons
Pros
  • Free and open-source
  • Highly customizable
  • Scalable and secure
  • Supports multiple databases and integrations
  • Highly customizable and scalable
  • Supports a range of project management methodologies
  • Offers a range of features to support team collaboration
  • Free and open source
Cons
  • Steep learning curve
  • Limited user interface customization options
  • May require technical expertise to set up and configure
  • Can be complex to set up and configure
  • Limited support for mobile devices
  • May require technical expertise to customize
Community & Metrics
Upvotes
0
0
User rating
Not enough data
Not enough data

More alternatives & similar tools

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OpenProject
OpenProject

Free and open source project management software

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Linear
Linear

Fast, opinionated issue tracking built for software teams.

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Jira
Jira

The #1 software development tool used by agile teams

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Alternatives to OpenProject

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Focalboard
Focalboard

Open-source, self-hosted alternative to Trello, Asana, and Notion

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Jira
Jira

The #1 software development tool used by agile teams

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Basecamp
Basecamp

Calm, opinionated project management and team communication.

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ClickUp
ClickUp

All-in-one work platform: tasks, docs, goals, and more.

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The Verdict

AI-generated from listing data

Both OpenProject and Mantis are free, open‑source tools, but OpenProject offers broader project‑management features while Mantis focuses on issue tracking and reporting.

Key differences

  • •OpenProject includes Gantt charts, calendar views and time‑tracking; Mantis does not.
  • •Mantis provides a mobile‑friendly UI; OpenProject has limited mobile support.
  • •OpenProject’s primary language is Ruby with 15.5k GitHub stars; Mantis is Swift with 1.2k stars.
  • •Mantis supports multiple databases (MySQL, PostgreSQL, SQL Server); OpenProject’s database support isn’t specified.
DimensionWinner

Pricing & value

Both are free and open source, offering comparable cost‑free value.

Tie

Ease of use / learning curve

Mantis has a steep learning curve but offers a mobile‑friendly UI; OpenProject is noted as complex to set up.

Mantis

Features & depth

OpenProject provides Gantt charts, calendars, time tracking, and multiple PM methodologies; Mantis focuses on issue tracking.

OpenProject

Integrations & ecosystem

Both integrate with Git and SVN; Mantis adds database integrations, OpenProject adds LDAP.

Tie

Collaboration

OpenProject includes customizable workflows, project templates, and team collaboration tools; Mantis is more limited to issue tracking.

OpenProject

Scalability

OpenProject is described as highly customizable and scalable; Mantis is scalable but less emphasized.

OpenProject

Support

Both provide email and community‑based support options.

Tie

Choose Mantis if…

Software dev or IT groups focused on issue tracking with database flexibility.

Choose OpenProject if…

Small teams needing full project‑management (Gantt, time‑tracking, agile boards).

Common questions

Is there any cost to use either tool?

Both OpenProject and Mantis are free and open source.

Which tool offers better mobile access?

Mantis provides a mobile‑friendly interface; OpenProject has limited mobile support.

Do both tools support integration with Git?

Yes, both OpenProject and Mantis list Git (and SVN) as key integrations.