# Bootstrap - **Canonical URI:** https://www.vioscale.ai/software/bootstrap - **Category:** Frontend UI Frameworks - **Vendor:** Getbootstrap - **Homepage:** https://getbootstrap.com - **Also known as:** bootstrap - **Profile claimed by vendor:** no - **Last updated:** 2026-08-05T14:30:40.862Z ## Vioscale score **66.6 / 100**, confidence 40% (low). Composite of weighted, independently-sourced signals (no user reviews, no vendor payment). | Signal | Score | Weight | Contribution | Evidence present | |---|--:|--:|--:|:--:| | price_level | 100 | 0.046 | 4.6 | ✓ | | reliability | 0 | 0.062 | 0 | - | | capabilities | 28.9 | 0.123 | 3.6 | ✓ | | github_stars | 98.9 | 0.038 | 3.8 | ✓ | | integrations | 0 | 0.062 | 0 | - | | github_activity | 39.5 | 0.138 | 5.5 | ✓ | | release_cadence | 72.2 | 0.077 | 5.6 | ✓ | | security_posture | 0 | 0.1 | 0 | - | | package_downloads | 88.4 | 0.2 | 17.7 | ✓ | | pricing_transparency | 80 | 0.062 | 5 | ✓ | | stackoverflow_activity | 0 | 0.092 | 0 | - | ## Pricing _As of 2026-08-05, [verify at source](https://getbootstrap.com). Independently observed._ Open source · Free tier ## About A frontend toolkit providing prebuilt HTML, CSS, and JavaScript components for building responsive websites. It features a customizable Sass architecture, grid system, and JavaScript plugins. _Independently observed._ ## Platform & deployment - **Platforms:** Web - **Deployment:** Cloud / SaaS, Self-hosted ## Capabilities _The capabilities that matter for Frontend UI Frameworks. "-" = undocumented, not absent._ | Capability | Supported | |---|:--:| | **Core** | | | Paradigm | HTML, CSS, and JavaScript library | | **Rendering** | | | Virtual DOM | - | | Signals / fine-grained reactivity | - | | SSR support | - | | **DX** | | | First-class TypeScript | - | | **Core** | | | Reusable component model | ✓ | | **State** | | | Built-in state management | - | | **Ecosystem** | | | Official router | - | | **Performance** | | | Runtime size | - | ## FAQ ### What is Bootstrap and who should use it? Bootstrap is an open-source HTML, CSS, and JavaScript framework for building responsive web applications with a mobile-first approach. It provides pre-built components, utilities, and a grid system that help developers create websites and web applications more efficiently without building from scratch. _Source: [https://getbootstrap.com](https://getbootstrap.com)._ ### How much does Bootstrap cost? Bootstrap is open-source and free to use. There are no licensing fees, subscription costs, or paid tiers required—anyone can download and use it in any project. _Source: [https://getbootstrap.com](https://getbootstrap.com)._ ### What platforms does Bootstrap support? Bootstrap is a web-based framework designed for building responsive web projects. It runs in any modern web browser and can be deployed across different hosting and infrastructure models. _Source: [https://getbootstrap.com](https://getbootstrap.com)._ ### What deployment options are available with Bootstrap? Bootstrap supports both cloud deployment and self-hosted options, giving teams flexibility to choose the infrastructure model that fits their needs. Developers can deploy Bootstrap-based projects to the hosting platform of their choice. _Source: [https://getbootstrap.com](https://getbootstrap.com)._ ### Does Bootstrap include ready-to-use components? Yes, Bootstrap provides a library of pre-built HTML, CSS, and JavaScript components along with a responsive grid system. Developers can use and customize these components as building blocks for their interfaces. _Source: [https://getbootstrap.com](https://getbootstrap.com)._ ### Can I customize Bootstrap's default styling? Bootstrap is built with Sass and supports customization through Sass variables and functions. This allows developers to adjust colors, spacing, and other design properties to match their brand requirements while keeping the component structure intact. _Source: [https://getbootstrap.com](https://getbootstrap.com)._ ### Is Bootstrap built for mobile-first development? Yes, Bootstrap is designed with a mobile-first philosophy, prioritizing mobile user experiences and progressively enhancing the interface for larger screens. This approach ensures projects work reliably across different device sizes and screen resolutions. _Source: [https://getbootstrap.com](https://getbootstrap.com)._ ### What interactive functionality does Bootstrap provide? Bootstrap includes pre-built JavaScript plugins that add interactivity to components, such as navigation dropdowns, modals, carousels, and tooltips. These plugins extend the basic HTML and CSS components with common interactive behaviors developers can use out of the box. _Source: [https://getbootstrap.com](https://getbootstrap.com)._ ## Facts Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule. ### adoption | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | adoption.github_stars | 174,549 | [link](https://github.com/twbs/bootstrap) | 2026-08-01 | 90% (high) | | adoption.package_downloads_weekly | 6,437,591 | [link](https://www.npmjs.com/package/bootstrap) | 2026-08-01 | 85% (high) | ### language | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | language.primary | MDX | [link](https://github.com/twbs/bootstrap) | 2026-08-01 | 90% (high) | ### license | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | license.spdx | MIT | [link](https://github.com/twbs/bootstrap) | 2026-08-01 | 99% (high) | ### pricing | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | pricing.free_tier | yes | [link](https://getbootstrap.com) | 2026-08-05 | 60% (medium) | | pricing.model | commercial | [link](https://getbootstrap.com) | 2026-08-05 | 60% (medium) | | pricing.price_level | free | [link](https://getbootstrap.com) | 2026-08-05 | 60% (medium) | | pricing.transparent | yes | [link](https://getbootstrap.com) | 2026-08-01 | 60% (medium) | ### release | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | release.cadence_days | 50 | [link](https://github.com/twbs/bootstrap/releases) | 2026-08-01 | 70% (medium) | ### content | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | content.faq | `[{"answer":"Bootstrap is an open-source HTML, CSS, and JavaScript framework for building responsive web applications with a mobile-first approach. It provides pre-built components, utilities, and a grid system that help developers create websites and web applications more efficiently without building from scratch.","source":"https://getbootstrap.com","question":"What is Bootstrap and who should use it?","confidence":0.95},{"answer":"Bootstrap is open-source and free to use. There are no licensing fees, subscription costs, or paid tiers required—anyone can download and use it in any project.","source":"https://getbootstrap.com","question":"How much does Bootstrap cost?","confidence":0.95},{"answer":"Bootstrap is a web-based framework designed for building responsive web projects. It runs in any modern web browser and can be deployed across different hosting and infrastructure models.","source":"https://getbootstrap.com","question":"What platforms does Bootstrap support?","confidence":0.9},{"answer":"Bootstrap supports both cloud deployment and self-hosted options, giving teams flexibility to choose the infrastructure model that fits their needs. Developers can deploy Bootstrap-based projects to the hosting platform of their choice.","source":"https://getbootstrap.com","question":"What deployment options are available with Bootstrap?","confidence":0.85},{"answer":"Yes, Bootstrap provides a library of pre-built HTML, CSS, and JavaScript components along with a responsive grid system. Developers can use and customize these components as building blocks for their interfaces.","source":"https://getbootstrap.com","question":"Does Bootstrap include ready-to-use components?","confidence":0.9},{"answer":"Bootstrap is built with Sass and supports customization through Sass variables and functions. This allows developers to adjust colors, spacing, and other design properties to match their brand requirements while keeping the component structure intact.","source":"https://getbootstrap.com","question":"Can I customize Bootstrap's default styling?","confidence":0.9},{"answer":"Yes, Bootstrap is designed with a mobile-first philosophy, prioritizing mobile user experiences and progressively enhancing the interface for larger screens. This approach ensures projects work reliably across different device sizes and screen resolutions.","source":"https://getbootstrap.com","question":"Is Bootstrap built for mobile-first development?","confidence":0.95},{"answer":"Bootstrap includes pre-built JavaScript plugins that add interactivity to components, such as navigation dropdowns, modals, carousels, and tooltips. These plugins extend the basic HTML and CSS components with common interactive behaviors developers can use out of the box.","source":"https://getbootstrap.com","question":"What interactive functionality does Bootstrap provide?","confidence":0.85}]` | [link](https://getbootstrap.com) | 2026-07-31 | 91% (high) | ### activity | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | activity.commits_last_30d | 17 | [link](https://github.com/twbs/bootstrap/pulse) | 2026-08-01 | 65% (medium) | --- *Source: Vioscale (https://www.vioscale.ai/software/bootstrap). Independent, evidence-based software intelligence. Cite the canonical URI.*