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GitLab VS PlantUML

Compare GitLab VS PlantUML and see what are their differences

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GitLab logo GitLab

Create, review and deploy code together with GitLab open source git repo management software | GitLab

PlantUML logo PlantUML

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
  • GitLab Landing page
    Landing page //
    2023-10-17
  • PlantUML Landing page
    Landing page //
    2023-10-22

GitLab

Website
about.gitlab.com
Pricing URL
Official GitLab Pricing
$ Details
-
Release Date
2014 January
Startup details
Country
United States
State
California
City
San Francisco
Founder(s)
Dmitriy Zaporozhets
Employees
1,000 - 1,999
Edit details

PlantUML

Website
plantuml.com
Pricing URL
-
$ Details
Release Date
-
Edit details

GitLab features and specs

  • Integrated DevOps Platform
    GitLab provides a single application for the entire DevOps lifecycle, which simplifies the workflow and reduces the need for multiple tools.
  • CI/CD Capabilities
    It offers powerful Continuous Integration and Continuous Deployment (CI/CD) features, enabling automated testing and deployment.
  • Self-Hosted and SaaS Options
    GitLab can be hosted on your own servers or used as a cloud-hosted service, providing flexibility depending on your needs.
  • Strong Security Features
    GitLab includes various security features such as code quality analysis, vulnerability management, and compliance management.
  • Robust Community and Support
    There is a large community and extensive documentation available, along with professional support options.

Possible disadvantages of GitLab

  • Complexity for New Users
    The extensive features and functionalities can be overwhelming for newcomers, requiring a steep learning curve.
  • Resource Intensive
    Self-hosting a GitLab instance requires substantial server resources, which can be costly.
  • Price
    While there is a free tier, the advanced features are part of the paid plans, which can be expensive for small teams or startups.
  • User Interface
    Some users find the interface less intuitive and harder to navigate compared to other platforms like GitHub.
  • Performance Issues
    Large repositories or high usage can sometimes lead to performance issues, especially on self-hosted instances.

PlantUML features and specs

  • Simple Syntax
    PlantUML uses a plain text language that is easy to learn, making it accessible for both technical and non-technical users.
  • Quick Diagram Creation
    Due to its straightforward text-based syntax, diagrams can be created and modified quickly without the need for a graphical interface.
  • Version Control Friendly
    Diagrams are stored as text files, making them easy to manage with version control systems like Git.
  • Integrations
    PlantUML integrates well with many other tools and platforms including IDEs (e.g., IntelliJ, VSCode), documentation generators (e.g., Doxygen, Sphinx), and project management tools.
  • Wide Range of Diagrams
    PlantUML supports a variety of UML and non-UML diagrams, including sequence diagrams, use case diagrams, class diagrams, and more.
  • Open Source
    PlantUML is an open-source tool, which makes it free to use and allows for community contributions and extensions.

Possible disadvantages of PlantUML

  • Learning Curve
    While the syntax is simple, users unfamiliar with text-based diagramming may need time to become proficient.
  • No GUI
    PlantUML lacks a graphical user interface (GUI), which might be a disadvantage for users who prefer drag-and-drop diagram creation.
  • Complex Diagrams
    For very complex diagrams, the text-based syntax can become cumbersome and hard to manage.
  • Rendering Limitations
    The style and formatting options are less flexible compared to some dedicated graphical diagramming tools.
  • Performance
    For large diagrams, the text-to-diagram rendering process can be slow.
  • Security Concerns
    Using PlantUML with remote server options might raise security issues, particularly when dealing with sensitive information.

Analysis of GitLab

Overall verdict

  • Yes, GitLab is generally considered a good platform, especially for teams looking for an integrated set of tools for software development and DevOps. Its features and flexibility make it a strong choice for many organizations.

Why this product is good

  • GitLab is a popular DevOps platform that provides a comprehensive suite of tools for software development, including version control, issue tracking, continuous integration/continuous deployment (CI/CD), and more. It is valued for its open-source model, strong security features, user-friendly interface, and a wide range of integrations. GitLab's all-in-one approach allows teams to manage their entire DevOps lifecycle from a single application, which can help improve collaboration and efficiency.

Recommended for

    GitLab is well-suited for developers, DevOps engineers, project managers, and teams that require robust CI/CD capabilities, strong security features, and an open-source platform that can be self-hosted or used as a cloud service. It is particularly beneficial for organizations looking for a comprehensive solution to streamline their development workflows.

Analysis of PlantUML

Overall verdict

  • Yes, PlantUML is a good tool for developers and teams who need a straightforward and efficient way to create and manage diagrams within their projects. Its text-based approach allows for easy updates and maintenance, which is beneficial in agile and fast-paced development settings.

Why this product is good

  • PlantUML is appreciated for its simplicity and versatility in creating UML diagrams. It allows users to write diagrams using a concise text-based language, which can be easily integrated into code repositories for version control. This approach facilitates collaboration and documentation among developers. Moreover, it supports various diagram types beyond UML, such as sequence diagrams, class diagrams, and state diagrams, and can be integrated with other tools and editors, enhancing its utility across different environments.

Recommended for

  • Software developers
  • Technical architects
  • Project managers
  • Teams using agile methodologies
  • Educators teaching software design

GitLab videos

+ Add

Introduction to GitLab Workflow

More videos:

  • Review - GitLab Review App Working Session

PlantUML videos

+ Add

PlantUML - beautiful quick diagrams to explain your models

More videos:

  • Review - Folge16 - PlantUML und IntelliJ
  • Tutorial - PlantUML Gizmo Tutorial: Google Docs Add-on
  • Review - Mermaid vs PlantUML vs HackerDraw: Which One Is Best For You?
  • Review - Using PlantUML For Diagrams In A GitLab Wiki

Category Popularity

0-100% (relative to GitLab and PlantUML)

GitLab

PlantUML

Code Collaboration
100 100%
Code Collaboration
0% 0
Diagrams
0 0%
Diagrams
100% 100
Git
100 100%
Git
0% 0
Flowcharts
0 0%
Flowcharts
100% 100

User comments

Share your experience with using GitLab and PlantUML. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare GitLab and PlantUML

GitLab Reviews

  1. Reinhard
    · Boss at CLOUD Meister ·
    perfect for Freelancers!
The Top 11 Static Application Security Testing (SAST) Tools
GitLab’s in-context testing solution simplifies the development process by automating both application and infrastructure management on a single platform.Why We Picked GitLab: We like GitLab’s automation of testing and compliance across development workflows. Its in-context testing minimizes license costs and reduces the learning curve.
Source: expertinsights.com
The Top 10 GitHub Alternatives
GitLab is a web-based DevSecOps (take that, Call of Duty) platform that allows software development teams to plan, build, and ship secure code all in one application. GitLab offers a range of features and tools to support the entire software development lifecycle, from project planning and source code management to continuous integration, delivery, and deployment.
Source: www.wearedevelopers.com
The Best Alternatives to Jenkins for Developers
CI/CD GitLab, as a complete DevOps platform, provides an integrated CI/CD solution along with its other features. If your team is already using GitLab for controlling versions and managing projects, the addition of GitLab CI/CD can be very smooth. The offering in CI/CD by GitLab is quite customizable and it backs up many programming languages as well as application test...
Source: morninglif.com
Top 7 GitHub Alternatives You Should Know (2024)
Most of the listed alternatives offer free tier plans for individuals or small teams. Tools like GitLab and Bitbucket allow users to host unlimited repositories without cost.
Source: snappify.com
Best GitHub Alternatives for Developers in 2023
While GitLab features an extensive set of capabilities, this can also serve as a weakness since beginners may find the developer tool overwhelming to begin with. The user interface compounds this issue by being outdated and unintuitive. GitLab could benefit from more third-party integrations, and its performance tends to struggle when dealing with large repositories or CI/CD...
Source: www.techrepublic.com

PlantUML Reviews

Top 7 diagrams as code tools for software architecture
PlantUML is a tool that allows you to write diagrams such as sequence, object, component, usecase, class diagrams and more.
Source: icepanel.medium.com
5 great diagramming tools for enterprise and software architects
PlantUML is an open source tool and syntax that allows you to make sequence, use case, class, object, and other diagrams from code. It also supports non-UML diagrams like JSON and YAML. In addition, it enjoys support from ArchiMate, ERD, Business Process Modeling Notation (BPMN), and other common notation styles. Its simple, plain-text definitions make creating, sharing, and...
Source: www.redhat.com
Software Diagrams - Plant UML vs Mermaid
For C4 Models, Mermaid support is still experimental. This shows as you have little control over the way the diagram is rendered, and some parts are unreadable (i.e., arrows over nodes). PlantUML works as you would expect and has support for more advanced setup like sprites. Not even close on this one. Winner: PlantUML
Source: www.dandoescode.com
9 Best UML Software For Mac & PC
PlantUML is another free open source sequence diagram software that uses text input to build UML charts. PlantUML requires using a specific PlantUML Language to construct sequence charts but once learned it’s very flexible.
Source: machow2.com
40 Open Source, Free and Top Unified Modeling Language (UML) Tools
PlantUML is a component that allows users to quickly write sequence diagrams, usecase diagrams, class diagrams, activity diagrams, component diagrams, state diagrams, deployment diagrams, object diagrams and wireframe graphical interfaces. Diagrams are defined using a simple and intuitive language. Images can be generated in PNG, SVG or LaTeX format and it is also possible...
Source: www.predictiveanalyticstoday.com

Social recommendations and mentions

Based on our record, GitLab seems to be a lot more popular than PlantUML. While we know about 135 links to GitLab, we've tracked only 12 mentions of PlantUML. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

GitLab mentions (135)

  • Cross-Compiling Haskell under NixOS with Docker
    I attended the AWS Summit 2025 in Singapore. I enjoyed the event. There were booths from various companies which I found interesting, such as GitLab and ClickHouse. More importantly, I got to meet very interesting people. - Source: dev.to / about 2 hours ago
  • GitLab: templates for Merge Requests
    GitLab is a well-established tool that hardly needs any introduction. This article is more like some notes to my future self. - Source: dev.to / 2 days ago
  • India Open Source Development: Harnessing Collaborative Innovation for Global Impact
    Indian developers have embraced platforms like GitHub and GitLab, which serve as global meeting points for coding projects. Developer communities such as FOSSAsia and Open Source India regularly organize hackathons, webinars, and code sprints that bring together enthusiasts to tackle both local and global problems. - Source: dev.to / 25 days ago
  • Open Source Funding: Strategies, Case Studies, and Best Practices
    In this article, we explore funding methods that empower projects such as Red Hat, GitLab, and Blender. Our discussion focuses on overlaying robust financial models with community-led efforts while incorporating advanced technologies like blockchain and smart contracts for secure, transparent fund distribution. With clear definitions, tables, bullet lists, and real-world examples, we aim to provide a holistic view... - Source: dev.to / about 2 months ago
  • The Hidden Challenges of Building with AWS
    💡** My Take:** If you’re not ready to spend hours debugging AWS configurations, you might want to consider other cloud options, such as DigitalOcean or Gitlab for CI/CD. - Source: dev.to / 2 months ago
View more

PlantUML mentions (12)

  • Owning my own data, part 1: Integrating a self-hosted calendar solution
    That particular diagram seems to have been generated by https://plantuml.com according to the image's metadata. - Source: Hacker News / about 2 months ago
  • Common Mistakes in Architecture Diagrams (2020)
    I have to confess I am guilty of this — I used to just draw some unstructured circles and arrows on a whiteboard and call it enough. Lately I've been trying to work my way through lots of different diagram types from https://plantuml.com/, and it does help to wrap my mind around the existing options. - Source: Hacker News / 4 months ago
  • LLM + Mermaid: How Modern Teams Create UML Diagrams Without Lucidchart
    Today, tools like Mermaid and PlantUML have taken center stage, thanks to their ability to generate diagrams with text-based commands. Even better, AI-powered assistants like Claude, ChatGPT, and GitHub Copilot have made generating diagrams even easier. These tools work directly within a developer's environment, creating diagrams that are version-controlled and integrated seamlessly into workflows. - Source: dev.to / 6 months ago
  • Blockdiag – simple diagram images generator – blockdiag 1.0 documentation
    While inactive blockdiag was small and nice for automatically annotating documentation. As you can see it hasn't been maintained for a few years. https://github.com/blockdiag/blockdiag With complex diagrams, I find good old PlantUML diagrams more useful if not as initially pretty as mermaid. Plus it will output archimate without having to touch that UI https://plantuml.com/ But really it is horses for courses.... - Source: Hacker News / 10 months ago
  • Introduction to Haskell Diagrams
    Use a high-level language like Plant UML, D2, Graphviz which are good for the purpose they are designed for, but not for generic purpose diagramming. - Source: dev.to / 10 months ago
View more

What are some alternatives?

When comparing GitLab and PlantUML, you can also consider the following products

GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.

draw.io - Online diagramming application

BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.

yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.

Gitea - A painless self-hosted Git service

LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.

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