# Bulma vs Preact

**Leader by Vioscale score:** Preact

| Attribute | Bulma | Preact |
|---|---|---|
| **Vioscale score** | 47.6 (72% (medium)) | 80.7 (72% (medium)) |
| activity.commits_last_30d | 0 | 100 |
| adoption.dependent_repos | 64,999 | 78,992 |
| adoption.github_stars | 50,059 | 38,834 |
| adoption.package_downloads_weekly | 371,536 | 31,234,030 |
| deployment.options | `{"cloud":true,"self_hosted":true}` | - |
| description.long | A free, open-source CSS library providing pre-built components and utilities for constructing responsive web layouts. It uses Flexbox and CSS Grid as its foundation with CSS Variables for customization, requiring only a single CSS file and no JavaScript to get started. | A minimal virtual DOM library that provides a React-compatible API with significantly reduced file size. Preact delivers performance-focused component development without the overhead of traditional frameworks. |
| features.capabilities | `{"paradigm":"Flexbox and Grid-based CSS component framework","bundle_size":"small","component_model":true}` | `{"paradigm":"Virtual DOM component library","bundle_size":"tiny","ssr_support":true,"virtual_dom":true,"component_model":true,"state_management":true}` |
| language.primary | CSS | JavaScript |
| license.spdx | MIT | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://bulma.io/","retrievedAt":"2026-08-13T22:59:17.547Z"}` | `{"type":"open_source","sourceUrl":"https://preactjs.com/","retrievedAt":"2026-08-13T23:05:09.849Z"}` |
| pricing.free_tier | yes | - |
| pricing.model | commercial | commercial |
| pricing.price_level | free | free |
| release.cadence_days | 113 | 13 |
| release.history | `[{"url":"https://github.com/jgthms/bulma/releases/tag/1.0.4","date":"2025-04-19T14:02:58Z","type":"stable","version":"1.0.4"},{"url":"https://github.com/jgthms/bulma/releases/tag/1.0.3","date":"2024-12-27T20:28:08Z","type":"stable","version":"1.0.3"},{"url":"https://github.com/jgthms/bulma/releases/tag/1.0.2","date":"2024-07-25T15:02:20Z","type":"stable","version":"1.0.2"},{"url":"https://github.com/jgthms/bulma/releases/tag/1.0.1","date":"2024-05-20T16:40:40Z","type":"stable","version":"1.0.1"},{"url":"https://github.com/jgthms/bulma/releases/tag/1.0.0","date":"2024-03-21T17:55:47Z","type":"stable","version":"1.0.0"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.9.4","date":"2022-05-08T13:50:59Z","type":"stable","version":"0.9.4"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.9.3","date":"2021-06-18T17:45:30Z","type":"stable","version":"0.9.3"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.9.2","date":"2021-01-26T19:22:14Z","type":"stable","version":"0.9.2"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.9.1","date":"2020-09-28T22:40:29Z","type":"stable","version":"0.9.1"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.9.0","date":"2020-06-07T12:53:29Z","type":"stable","version":"0.9.0"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.8.2","date":"2020-04-11T12:18:38Z","type":"stable","version":"0.8.2"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.8.1","date":"2020-03-23T14:11:08Z","type":"stable","version":"0.8.1"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.8.0","date":"2019-10-18T01:15:00Z","type":"stable","version":"0.8.0"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.7.5","date":"2019-05-19T11:09:18Z","type":"stable","version":"0.7.5"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.7.4","date":"2019-02-08T11:41:21Z","type":"stable","version":"0.7.4"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.7.3","date":"2019-02-07T19:37:56Z","type":"stable","version":"0.7.3"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.7.2","date":"2018-10-12T09:05:50Z","type":"stable","version":"0.7.2"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.7.1","date":"2018-04-18T16:31:58Z","type":"stable","version":"0.7.1"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.7.0","date":"2018-04-13T15:42:35Z","type":"stable","version":"0.7.0"},{"url":"https://github.com/jgthms/bulma/releases/tag/0.6.2","date":"2018-01-10T17:48:40Z","type":"stable","version":"0.6.2"}]` | `[{"url":"https://github.com/preactjs/preact/releases/tag/11.0.0-rc.1","date":"2026-08-26T07:49:33Z","type":"prerelease","version":"11.0.0-rc.1"},{"url":"https://github.com/preactjs/preact/releases/tag/11.0.0-rc.0","date":"2026-08-10T06:17:58Z","type":"prerelease","version":"11.0.0-rc.0"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.8","date":"2026-08-01T09:57:31Z","type":"stable","version":"10.29.8"},{"url":"https://github.com/preactjs/preact/releases/tag/11.0.0-beta.2","date":"2026-07-15T16:46:28Z","type":"prerelease","version":"11.0.0-beta.2"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.7","date":"2026-07-08T17:33:42Z","type":"stable","version":"10.29.7"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.6","date":"2026-07-08T07:34:46Z","type":"stable","version":"10.29.6"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.5","date":"2026-07-07T16:51:01Z","type":"stable","version":"10.29.5"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.4","date":"2026-07-03T10:58:50Z","type":"stable","version":"10.29.4"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.3","date":"2026-06-26T05:16:07Z","type":"stable","version":"10.29.3"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.2","date":"2026-05-17T09:58:18Z","type":"stable","version":"10.29.2"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.1","date":"2026-04-03T10:43:40Z","type":"stable","version":"10.29.1"},{"url":"https://github.com/preactjs/preact/releases/tag/10.29.0","date":"2026-03-10T18:28:07Z","type":"stable","version":"10.29.0"},{"url":"https://github.com/preactjs/preact/releases/tag/10.28.4","date":"2026-02-19T07:15:06Z","type":"stable","version":"10.28.4"},{"url":"https://github.com/preactjs/preact/releases/tag/11.0.0-beta.1","date":"2026-02-15T10:10:26Z","type":"prerelease","version":"11.0.0-beta.1"},{"url":"https://github.com/preactjs/preact/releases/tag/10.28.3","date":"2026-01-31T09:58:48Z","type":"stable","version":"10.28.3"},{"url":"https://github.com/preactjs/preact/releases/tag/10.28.2","date":"2026-01-06T14:51:37Z","type":"stable","version":"10.28.2"},{"url":"https://github.com/preactjs/preact/releases/tag/10.27.3","date":"2026-01-06T14:59:45Z","type":"stable","version":"10.27.3"},{"url":"https://github.com/preactjs/preact/releases/tag/10.26.10","date":"2026-01-06T15:02:47Z","type":"stable","version":"10.26.10"},{"url":"https://github.com/preactjs/preact/releases/tag/10.28.1","date":"2025-12-23T19:22:14Z","type":"stable","version":"10.28.1"},{"url":"https://github.com/preactjs/preact/releases/tag/10.28.0","date":"2025-12-01T17:12:41Z","type":"stable","version":"10.28.0"}]` |
| reliability.status_page | yes | - |
| security.scorecard | 2.8 | 5.7 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bulma&per_page=100","last_12m":0,"max_severity":null}` | `{"count":2,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=preact&per_page=100","last_12m":1,"max_severity":"HIGH"}` |

## Capabilities (Frontend UI Frameworks)

| Capability | Bulma | Preact |
|---|:--:|:--:|
| **Core** |  |  |
| Paradigm | Flexbox and Grid-based CSS component framework | Virtual DOM component library |
| Reusable component model | ✓ | ✓ |
| **Rendering** |  |  |
| Virtual DOM | - | ✓ |
| Signals / fine-grained reactivity | - | - |
| SSR support | - | ✓ |
| **DX** |  |  |
| First-class TypeScript | - | - |
| **State** |  |  |
| Built-in state management | - | ✓ |
| **Ecosystem** |  |  |
| Official router | - | - |
| **Performance** |  |  |
| Runtime size | Small (10–40kb) | Tiny (<10kb) |

*Source: Vioscale. Generated 2026-09-01T17:25:32.676Z. "-" = undocumented, not absent.*