One thing that never gets old in project management is the necessity to enhance the efficiency of planning, scheduling, and tracking workflows. There is a time-proven approach for achieving this goal - use a Gantt chart. There is no need to reinvent the wheel. The main challenge here is to adjust a Gantt chart to established business processes within a company. Ready-made Gantt software rarely offers this kind of flexibility, and building a custom planning tool becomes a viable option. But how to do that without straining team efforts and budget at the initial project stages? The answer is to use open-source Gantt components that streamline the delivery of the functionality without licensing costs.
In this article, we review the most notable open-source Gantt components available today for web development. I collected solutions from DHTMLX, Frappe, SVAR, and Worktile distributed under the MIT license, allowing free use in both non-profit and commercial projects. The main goal of this article is not to determine which component is best, but rather to offer a range of tools that cover more use cases.
Before delving into the highlights of the products, I want to take a short detour and discuss the relevance of a Gantt chart in modern project management.
Gantt Charts in the Era of Agile Workflows
Why do many companies still turn to Gantt charts in an increasingly fast-changing business environment? There is a widespread perception that this long-standing tool has lost much of its value as projects increasingly transition to Agile practices, where requirements evolve continuously, and priorities shift quickly. To some extent, this is true, but Gantt charts are not completely at odds with Agile practices.
While a Gantt chart may be less suitable for managing day-to-day details of iterative development processes, it can still provide a useful high-level view of dependencies between tasks, their progress, important milestones, and delivery expectations to the project team and stakeholders. Moreover, many companies prefer to combine Agile with other methodologies such as Waterfall, and Gantt charts have proven very useful in such hybrid environments.
Planning, scheduling, and task execution still shape the essence of project management. One of Capterra’s surveys lists these parameters among key project management features, with 93% of respondents considering them highly important. And this is where Gantt charts have long been indispensable.
It is not that hard to find free or relatively affordable Gantt software. And it is quite another thing to implement custom Gantt functionality that fully meets a company's planning and scheduling needs. To do that with minimum time and financial costs, developers need an open-source, production-ready Gantt component, which isn’t easy to find.
Many things should be taken into account when trying to find open-source JavaScript Gantt libraries for real projects:
- Fit with modern tech stacks
- Feature scope
- API flexibility
- Documentation and examples
- Updates and maintenance
Without further ado, we proceed to an overview of the open-source Gantt components I have selected and examine how they meet the specified criteria.
DHTMLX Gantt Community Edition
DHTMLX Gantt Community Edition is probably the most significant addition to the landscape of open-source Gantt UI components in recent years. It incorporates the core features of the commercial DHTMLX Gantt, a mature product that has been refined over years of use in commercial projects of all sizes and complexity, from startups to complex SaaS projects and large-scale enterprise systems. Bringing the battle-tested codebase under the MIT license has become big news across the development community.
One particularly valuable thing for teams with long-term development strategies is the extensibility of this JavaScript Gantt chart. Once project requirements go beyond the Community Edition’s scope, DHTMLX provides a straightforward migration path to its commercial Gantt PRO Edition with enterprise-level features (auto-scheduling engine, split tasks, resource management, etc.) and tech support.
What does DHTMLX Gantt Community Edition bring to a project?
Fit with modern tech stacks. DHTMLX Gantt Community Edition is a pure JavaScript UI component that integrates well with top frontend frameworks (React, Vue, Angular, Svelte) and can be connected to different backend technologies. Up-to-date integration guides are available.
Gantt feature scope. Strong project planning foundation with multiple task management options (4 types of dependency links, milestones, project summaries, etc.), grid operations (sorting, filtering, resizing, inline editing, tree view), built-in timeline views (Day / Week / Month / Year), export to popular formats (PDF, PNG, Excel, MS Project), rich drag-and-drop behavior. These and other numerous features work smoothly in project plans of varying sizes thanks to optimized performance.
API flexibility. The component is shipped with an extensive API containing a variety of methods, properties, events, and templates, giving full control over the chart’s appearance and behavior patterns. Thus, it becomes much easier to configure or customize any part of the Gantt chart, from the grid area to timeline elements as desired. For quick styling adjustments, the component provides eight built-in customizable themes.
Documentation and examples. DHTMLX accompanies its Gantt component with all-encompassing and well-structured documentation containing numerous guides with code snippets, API overview, and a large collection of live samples (850+) and demo apps. For development teams employing AI assistants in their workflows, there is the official DHTMLX MCP server and agent skills aimed at providing popular AI models with only relevant information from the docs. Any specific technical questions on the use of the Gantt component can be discussed on the community forum.
Updates and maintenance. The DHTMLX team regularly delivers updates and patch versions for its Gantt component, and most of the novelties, except for things related to PRO features, become an integral part of both the Community Edition and the commercial version.
When to choose:
The DHTMLX Gantt Community Edition makes the most sense when the Gantt functionality is expected to be the core element of an app with serious project planning requirements and the room to expand as these requirements grow to the enterprise level.
Frappe Gantt
Frappe Gantt is a compact JS library mainly used for timeline-based project visualizations. It provides everything required to create and style a classic Gantt structure without any frills and extra twists. Initially designed by the Frappe team to fill the Gantt view gap in the ERPNext platform, this tool later became one of the early pioneers in the niche of MIT-licensed JavaScript Gantt charts, which is one of the main reasons for its popularity. It may look modest compared to more comprehensive Gantt components presented above, but the main appeal of Frappe Gantt lies in its simplicity and usability.
What does Frappe Gantt bring to a project?
Fit with modern tech stacks. Frappe Gantt works well in standard JS apps. There are no official wrappers or integration guides for popular frontend frameworks. But it is possible to find custom integrations provided by the community.
Gantt feature scope. Basic visualizations of project workflows and product roadmaps with a Gantt chart usually require taskbars, dependency links, work progress indicators, and a timeline capable of showing this project data over various periods of time. Frappe Gantt permits you to do exactly that and top it off with targeted styling UI adjustments to keep it neat and uncluttered.
API flexibility. From this technical perspective, the simplicity of Frappe Gantt can be explained as the combination of lightweight architecture with an easy-to-understand API and minimal setup requirements. It takes a small amount of code to render a basic Gantt chart. In addition, there are configuration options for modifying the appearance, editing behavior, task interactions, tooltips, and other aspects of the Gantt chart.
Documentation and examples. Taking into account the minimalist approach used by the Frappe Gantt team, it is quite expected that the documentation won’t include too many details. It covers the basics of how to install and configure the Gantt chart. Perhaps it is enough for most use case scenarios with Frappe Gantt, but a little more detail on the practical use of the library and a few extra examples probably won’t go amiss. At the time, many interesting insights about Frappe Gantt can be found on the Frappe forum.
Updates and maintenance. The Gantt component is mainly supported by the Frappe team, while external contributions remain modest and updates are released sporadically. The library’s focus on simplicity and SVG-based rendering reduces the need for the same pace of continuous feature development as in more complex Gantt components.
When to choose:
This lightweight JavaScript Gantt chart is worth considering for prototypes, MVPs, internal tools, or dashboards requiring a lightweight Gantt view that serves as a supplementary visualization layer.
SVAR Gantt for React, Svelte & Vue
SVAR React Gantt is a modern, framework-native Gantt chart component for React. The same component is also available as Svelte and Vue versions, each built specifically for its framework. Idiomatic APIs, full reactivity, and first-class TypeScript support make it easy to integrate into a modern frontend stack.
SVAR Gantt comes with an open-source, MIT-licensed core that covers the essentials of project planning. The PRO edition adds advanced, enterprise-oriented features (auto-scheduling, critical path, working-days calendar, resource planning, export to PDF, PNG, MS Project (import/export), and more) on top of the same API. Moving from the free edition means enabling additional capabilities instead of rewriting integration code.
Check GitHub repositories for React, Vue, and Svelte versions.
What does SVAR Gantt bring to a project?
Fit with modern tech stacks. SVAR Gantt ships in React, Svelte, and Vue versions. There is no wrapper layer: the Gantt component integrates natively with framework-specific reactivity, component composition, and type definitions. This makes SVAR Gantt a natural fit for modern tooling (Vite, Next.js, SvelteKit, Nuxt) and allows teams to customize the chart for their needs with the codebase they already know.
Gantt feature scope. The MIT-licensed core provides a solid project-planning foundation: tasks and subtasks in a hierarchical tree, dependencies, milestones and summary tasks, drag-and-drop scheduling, built-in editor, and high performance with large datasets. For easy task management, SVAR Gantt also supports a context menu and a toolbar with common user actions, as well as sorting and filtering capabilities.
API flexibility. The component exposes granular configuration options so you can customize the time scale, grid columns, time units, editor form, task bars, and more. It also relies on CSS variables for theming, which makes it straightforward to adapt the Gantt's appearance to an existing design system without overriding internal styles. Light and dark themes included.
Documentation and examples. SVAR Gantt comes with detailed, well-organized documentation with live demos and code examples, plus an active community forum and GitHub issues support. For AI-assisted development workflows, there is an official MCP server and a set of agent skills that feed AI models with relevant, up-to-date information from the docs.
Updates and maintenance. The SVAR team maintains all three framework versions of SVAR Gantt in parallel. The MIT core receives regular updates as part of the release cycle, with new versions shipped every 2–3 months as the project actively evolves. Most advanced features are introduced in the PRO Edition, while core improvements and bug fixes are available to all users.
When to choose:
SVAR Gantt is a strong choice if you want a Gantt chart with a flexible, clean, and framework-native API for your React, Svelte, or Vue application. It is also worth considering when the project may eventually need more advanced scheduling capabilities available in the SVAR Gantt PRO version.
ngx-gantt
ngx-gantt is another open-source Gantt project created by Worktile in response to strong demand for tools that provide a native development experience when building scheduling solutions with popular frontend frameworks. After entering the open-source ecosystem under the MIT license around 2020, the component has gradually accumulated a fairly broad set of capabilities for conveniently delivering interactive JavaScript Gantt chart UIs in Angular apps.
What does ngx-gantt bring to a project?
Fit with modern tech stacks. ngx-gantt takes a genuinely Angular-specific approach, with TypeScript and component architecture at its core. Therefore, this Gantt component can be easily integrated into existing Angular codebases.
Gantt feature scope. The component goes beyond basic timeline visualization, providing a decent set of features for task display, interaction operations, and view management. In addition, it also supports virtual scrolling and export/print capabilities.
API flexibility. ngx-gantt is based on three core concepts (data, views, and time) that determine how the Gantt UI is configured and extended. Global configuration options can be used to establish common Gantt behavior and appearance. Angular inputs, events, templates, and other extension points allow customizing separate Gantt elements and interactions. At the same time, it should be noted that advanced customization of views or layouts will require a deep understanding of ngx-gantt’s internal implementation.
Documentation and examples. There is a useful documentation base with overviews for the ngx-gantt concepts, API references, and a selection of working examples covering both basic usage and more complex customization scenarios. Insights included in the documentation can help avoid tricky parts of using the component in real scenarios, especially less clear moments related to Gantt customization.
Updates and maintenance. ngx-gantt has a relatively active development history led by the Worktile team. Recent releases include not only new features and bug fixes, but also updates aimed at keeping pace with Angular’s evolution. The changelog shows this particularly well through the move toward signals and support for zoneless apps.
When to choose:
ngx-gantt is a strong match for modern Angular applications with average requirements for project planning and scheduling, where the Gantt functionality can be integrated using familiar Angular component patterns and APIs.
As we’ve discovered, each open-source component offers its own approach to delivering Gantt functionality on the web, with a different range of capabilities suited to specific use cases.
Now, let’s bring the main findings together in a side-by-side comparison.
Key Differences at a Glance
The table below summarizes the key differences between open-source Gantt components using the selection criteria discussed throughout this overview.
| Component | Tech stack | Feature scope | Customization level | Documentation depth | Maintenance | Updates | Best fit |
|---|---|---|---|---|---|---|---|
| DHTMLX Gantt Community Edition | JavaScript + frameworks (React, Vue, Angular) | Broad | High | Comprehensive | Active | Regular | Apps with substantial project planning needs |
| Frappe Gantt | Vanilla JS | Basic | High | Concise | Active | Periodic | Lightweight Gantt visualizations |
| SVAR Gantt | React, Svelte, Vue (framework native) | Broad | High | Detailed | Active | Regular | Interactive project timelines for React, Svelte & Vue apps |
| ngx-gantt | Angular | Moderate | High | Sufficient | Active | Regular | Medium-scale Angular planning apps |
Wrapping Up
Although the open-source Gantt chart ecosystem, especially available under the MIT license, is relatively small, the existing free JavaScript Gantt chart libraries cover most standard project planning needs. Whether you need a simple Gantt view for project visualization, framework-native solutions, or more capable planning UIs for complex structures and heavy workloads, there is a reliable component to start with. And even when open-source feature sets reach their limit and do not address growing project requirements, there is a practical solution. Tools like DHTMLX Gantt and SVAR provide convenient upgrade paths to commercial PRO editions equipped with more advanced features and other benefits for handling more complex requirements.
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