Government Site Builder vs Isomer
Government Site Builder
produkt.gsb.bund.deIsomer
isomer.gov.sgSide by side
| Figure | Government Site Builder | Isomer |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | Yes |
| Web | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 2 | 1 |
| Spec score · Government Website Builders | 7.6 (#14) | 8.3 (#5) |
| Accessibility | GSB 11 meets the requirements of Germany’s BITV 2.0 accessibility regulation. | The product uses accessibility-focused templates and prompts editors to complete essential accessibility fields. |
| Hosting | Authorities in Dienstekonsolidierung are generally hosted at ITZBund, while self-hosting is also possible; self-hosting or using an external provider means they are responsible for applying updates, upgrades, and patches. | The Isomer team provides website hosting, maintenance and support for hosted sites. |
| Purpose | GSB is a web content management solution for creating, reviewing, approving, and publishing content on internet, intranet, and extranet sites. | Isomer is a free website builder for government agencies to create and launch static websites without coding expertise. |
| Security | The product page says regular updates and security checks by the federal government (BSI) support security, and describes GSB-specific configurations as improving security and data protection. | Isomer centrally manages security testing and audits, including vulnerability assessment and penetration testing, for hosted sites. |
| Support | ITZBund support handles faults and questions about IT procedures it operates, with contacts provided for support requests and live websites. | The Isomer team offers training and technical support, and says non-urgent contact requests may take up to five working days to receive a response. |
Plans
Government Site Builder
- GSB 11 Open Source distributionFree
- GSB 11 ITZBund hostingPriced on request
In their own words
Government Site Builder
Government Site Builder (GSB) is a web content management solution for creating, reviewing, approving, and publishing material on internet, intranet, and extranet sites. Its current release, GSB 11, is based on TYPO3 and intended for modern, accessible websites. Federal authorities required or choosing to participate in Dienstekonsolidierung are its primary users; states and municipalities can also reuse it. GSB 11 meets Germany’s BITV 2.0 accessibility requirements. Its modular editorial system has extensions for consent management, content modules and templates, website logins, metadata cleaning during uploads, and site configuration import and export. Search extensions include Solr and an adaptation for ITZBund hosting requirements. The product page describes regular updates and security checks by the federal government’s BSI, along with configurations intended to improve security and data protection. Authorities in Dienstekonsolidierung are generally hosted at ITZBund, though self-hosting is possible. Self-hosting or an external provider makes the authority responsible for updates, upgrades, and patches. The Open Source distribution is free under GPL 3.0; hosting, support, training, and custom development may cost extra.
Isomer
Isomer is a free website builder for Singapore government agencies and public healthcare institutions to create static websites without coding. Its Isomer Studio editor lets public officers build, edit, and publish pages with drag-and-drop controls. Publishing supports review requests, approvals, and release of approved changes. Agencies can select page layouts, combine components, and customize colours, logos, and favicons.
Accessibility prompts cover essential fields, while templates and components are designed to support accessible sites. SEO features include predefined headings, generated tables of contents and folder index pages, image alt text, and customizable meta descriptions. Open Government Products builds and manages Isomer. Its team handles hosting, maintenance, support, and compliance with relevant IM8 and Digital Service Standards clauses, and centrally manages security testing and audits. Isomer does not provide website design services or custom layouts. Domain costs and third-party services such as web monitoring may be extra.