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Isomer

isomer.gov.sg

Free plan Open source Web
Visit isomer.gov.sg
Spec score 8.3 #5 of 33 in Government Website Builders

What it is

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.

Spec sheet

What it does
Isomer is a static website builder for Singapore government agencies that provides managed hosting while agencies manage site content.Read 15 Oct 2026 · open.gov.sg
Purpose
Isomer is a free website builder for government agencies to create and launch static websites without coding expertise.Read 7 Oct 2026 · isomer.gov.sg
Integrations
Classic Isomer supports whitelisted embeds including VICA, YouTube, Vimeo, FormSG, Data.gov.sg graphs and CheckFirst.Read 15 Oct 2026 · classic.isomer.gov.sg
Security
Isomer centrally manages security testing and audits, including vulnerability assessment and penetration testing, for hosted sites.Read 15 Oct 2026 · isomer.gov.sg
Compliance
The service states that it covers relevant IM8 and Digital Services Standards requirements for hosted sites.Read 15 Oct 2026 · isomer.gov.sg
Support
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.Read 7 Oct 2026 · isomer.gov.sg
Founded
2018Read 28 Sep 2026 · isomer.gov.sg
Maker
Isomer is built and managed by Open Government Products.Read 7 Oct 2026 · isomer.gov.sg
Accessibility
The product uses accessibility-focused templates and prompts editors to complete essential accessibility fields.Read 15 Oct 2026 · isomer.gov.sg
Adoption history
A GovTech annual report recorded 76 Isomer websites, 8 million users and 15 million sessions in 2019–2020.Read 15 Oct 2026 · isomer-user-content.by.gov.sg
API limitation
Isomer is intended for static sites and does not support database calls or API-based data retrieval as a core site pattern.Read 15 Oct 2026 · isomer.gov.sg
Authentication
The product report says access to site editing is protected by identity verification through Singpass.Read 15 Oct 2026 · reports.open.gov.sg
Content blocks
Available blocks include text, images, files, cards, callouts, accordions and section blocks, with availability depending on layout.Read 15 Oct 2026 · support.isomer.gov.sg
Customisation
Agencies can choose page layouts, combine components, and customise site colours, logos, and favicons.Read 7 Oct 2026 · isomer.gov.sg
Developer setup
The repository documents local development with pnpm, local Studio at port 3000 and template preview at port 3001.Read 15 Oct 2026 · github.com
Documentation
The Help Center is organised into 37 migration articles, 44 Isomer Next guide articles and 10 new-feature articles.Read 15 Oct 2026 · support.isomer.gov.sg
Editor
Isomer Studio lets public officers create, edit and publish sites without coding through a drag-and-drop WYSIWYG interface.Read 15 Oct 2026 · isomer.gov.sg
Eligibility
Isomer can only be used by Singapore government agencies and public healthcare institutions.Read 7 Oct 2026 · isomer.gov.sg
Hosting
The Isomer team provides website hosting, maintenance and support for hosted sites.Read 15 Oct 2026 · isomer.gov.sg
Hosting and compliance
The Isomer team is responsible for hosting, maintenance, support, and compliance with relevant IM8 and Digital Service Standards clauses.Read 7 Oct 2026 · isomer.gov.sg
Independent open-source description
The European Commission's Singapore open-source report identifies Isomer as a free static-site builder developed by Open Government Products for government agencies.Read 15 Oct 2026 · interoperable-europe.ec.europa.eu
Independent recognition
Open Government Products announced that Isomer was recognised as a Digital Public Good by the Digital Public Goods Alliance.Read 15 Oct 2026 · linkedin.com
Licence
The repository uses the MIT License, subject to Singapore-law and arbitration terms and exclusions for government or third-party assets.Read 15 Oct 2026 · github.com
Limit: analytics integration
Legacy Isomer documentation says Google Tag Manager is unavailable because it conflicts with the platform content-security policy.Read 15 Oct 2026 · v2.isomer.gov.sg
Limit: design
The service does not provide website design services or custom designs and layouts.Read 15 Oct 2026 · isomer.gov.sg
Limit: eligibility
Organisations outside Singapore government and public healthcare cannot use the hosted service.Read 15 Oct 2026 · isomer.gov.sg
Limit: extra costs
Although Isomer itself is free, agencies may pay for domain acquisition and external services such as web monitoring.Read 15 Oct 2026 · isomer.gov.sg
Limit: support response
Non-urgent support requests may take up to five working days to receive a response.Read 15 Oct 2026 · isomer.gov.sg
Limits
Isomer does not provide website design services or custom designs and layouts.Read 7 Oct 2026 · isomer.gov.sg
Maker founded
LinkedIn lists Open Government Products as founded in 2018.Read 15 Oct 2026 · sg.linkedin.com
Maker organisation
Open Government Products is an in-house Singapore government team of engineers, designers and product managers.Read 15 Oct 2026 · sg.linkedin.com
Maker relationship
The European Commission report describes Open Government Products as an independent unit of GovTech responsible for experimental government IT development.Read 15 Oct 2026 · interoperable-europe.ec.europa.eu
Maker size
LinkedIn lists Open Government Products as having 51–200 employees and headquarters in Singapore.Read 15 Oct 2026 · sg.linkedin.com
Notable change: Classic shutdown
The Isomer CMS notice says Isomer Classic shuts down from 30 September 2026.Read 15 Oct 2026 · cms.isomer.gov.sg
Notable news: Isomer Next
A LinkedIn post from the Isomer team described Isomer Next as a complete platform rebuild and reported migrating more than 10,000 Ministry of Health pages.Read 15 Oct 2026 · linkedin.com
Other costs
Users may need to pay for domain acquisition and management or third-party services such as web monitoring.Read 7 Oct 2026 · isomer.gov.sg
Page types
Isomer Next provides homepage, standard, article, overview and collection page types.Read 15 Oct 2026 · support.isomer.gov.sg
Pages and folders
Isomer Next organises sites into folders and pages, with folders determining navigation and URL paths.Read 15 Oct 2026 · support.isomer.gov.sg
Publishing
Pages remain drafts until explicitly published, and published changes normally appear on the live site in about 10 minutes.Read 15 Oct 2026 · support.isomer.gov.sg
Publishing workflow
Studio supports review requests, approvals, and publishing approved changes.Read 7 Oct 2026 · isomer.gov.sg
Rating on Gartner Peer Insights
No Isomer product rating appears on Gartner's Website Builders market page, whose listed products are other vendors.Read 15 Oct 2026 · gartner.com
Review workflow
Studio supports adding collaborators and raising, approving and publishing review requests.Read 15 Oct 2026 · isomer.gov.sg
Scale
The official product report says more than 700 government websites use Isomer and reports 100% uptime for hosted sites.Read 15 Oct 2026 · reports.open.gov.sg
SEO
Features include predefined headings, automatically generated tables of contents and folder index pages, image alt text, and customizable meta descriptions.Read 7 Oct 2026 · isomer.gov.sg
Site editor
Isomer Studio lets public officers create, edit, and publish websites using a drag-and-drop editor without coding.Read 7 Oct 2026 · isomer.gov.sg
Source repository
The public GitHub repository is a TypeScript monorepo using pnpm and Turborepo, with Studio and template applications.Read 15 Oct 2026 · github.com
Target users
Use is restricted to Singapore government agencies and public healthcare institutions.Read 15 Oct 2026 · isomer.gov.sg

Plans and prices

Isomer Free Free for Singapore government agencies and public healthcare institutions Eligible organisations only · Domain and third-party service costs may apply · Static-site use case Read 15 Oct 2026 · isomer.gov.sg

Every Isomer plan and price →

Strong points and limits

Strong points

  • Drag-and-drop editing does not require coding expertise.
  • Publishing includes review requests and approvals.
  • Accessibility prompts and accessible-design templates are included.
  • Hosting, maintenance, support, and central security management are handled by the Isomer team.

Limits

  • Use is limited to Singapore government agencies and public healthcare institutions.
  • Custom website design and layouts are not provided.
  • Domain and third-party service costs may apply.
  • Non-urgent support requests may take up to five working days for a response.

Who it suits

Isomer is for Singapore government agencies and public healthcare institutions whose public officers need to create and publish static websites without coding. It is not for organizations seeking custom website design services or layouts.

Isomer in depth

Read the full write-up

Overview

Isomer is a website builder for Singapore public-sector organizations that need to create and publish static sites without coding. It is most compelling for teams that want publishing controls and centrally managed operations, rather than a custom-built design. Its strict eligibility rules sharply limit who can use it.

Key features

Isomer Studio gives public officers a drag-and-drop editor for creating, editing, and publishing pages. Review requests and approvals put a checkpoint between a proposed change and publication, which suits agencies that need oversight of what goes live. Three editor roles and document management support team-based work, though organizations should check that the available roles fit their publishing responsibilities.

Accessibility prompts call attention to essential fields, and the templates and components are designed to support accessible sites. Predefined headings, generated tables of contents and folder index pages, image alt text, and customizable meta descriptions provide useful structure for accessibility and search visibility. They are aids to publishing, not a substitute for maintaining accurate, accessible content.

Agencies can select layouts, combine components, and adjust colours, logos, and favicons. That gives teams room to apply an institutional identity within the system, but not to commission custom designs or layouts. Isomer is a poor fit for organizations whose site depends on a bespoke visual experience.

The Isomer team handles hosting, maintenance, support, and compliance with relevant IM8 and Digital Service Standards clauses. It also centrally manages security, including testing such as VAPT and audits. This reduces the operational burden on an agency, while making the service a managed environment rather than a platform for teams to operate independently. Training and technical support are offered; non-urgent contact requests may take up to five working days for a response.

Isomer says it hosts more than 600 websites for over 70 government agencies, 300 schools, and public healthcare institutions. Built and managed by Open Government Products, it is clearly oriented toward public institutions rather than a broad commercial audience.

Pricing

The Isomer plan costs nothing and is free for use by Singapore government agencies and public healthcare institutions. There is no paid tier described; the central trade-off is eligibility and design scope, not a cheaper plan with reduced features. The plan includes the managed builder, but domain acquisition and management or third-party services such as web monitoring may still cost extra. Budget for those separately.

Platforms

Isomer runs on the web. Teams looking for a self-hosted deployment should consider a different platform.

Who it's for

Isomer fits Singapore government agencies and public healthcare institutions that want a no-code way to publish static sites with review and approval steps, while leaving hosting and central security management to the Isomer team. It is not for organizations outside those eligible groups, or teams that need custom-designed layouts or want direct control over hosting and maintenance.

Pros and cons

Managed operations: Hosting, maintenance, support, and central security management ease the workload for eligible agencies.

Controlled publishing: Review requests and approvals provide a formal route for changes to reach the public site.

Built-in publishing guidance: Accessibility prompts and structured SEO features encourage consistent page setup.

Restricted audience: Only Singapore government agencies and public healthcare institutions can use the service.

Limited design freedom: Layout and identity options do not extend to custom designs or layouts.

Additional expenses and response time: Domains and third-party services may cost extra, and non-urgent support requests may take up to five working days to receive a response.

Alternatives

For a broader comparison, see Government Website Builders.

WebSG is another web-based Government of Singapore product, with a free starting plan, free trial, and paid plans for advanced features and high traffic. Consider it if those paid options better match your needs.

Government Site Builder offers a free open-source distribution as well as an ITZBund hosting plan. Choose it if self-hosting is important, or if you want to assess its hosting, support, training, and development costs.

LocalGov Drupal is a free, open-source option for UK and Irish councils, with web, API, and self-hosted platforms. It is the more relevant choice for those councils rather than Singapore institutions.

S3WaaS is a web-based freemium option credited to India's National Informatics Centre and government ministry. Consider it if your organization is evaluating that government-built service.

Single Digital Presence offers a free route to create a new section on vic.gov.au, subject to approval, alongside a separately priced independent-site or component option. It is relevant to organizations working within that Victorian government setup.

CMS Max starts with a $40.00 per month Lite plan and has a free trial, but no free plan. It may suit buyers who need a paid CMS option and are prepared to compare its API and web offering.

Loop Municipal Websites has annual quote-based pricing and supports web, Android, and iOS. Consider it if a municipal website offering with those platforms is a better fit.

GOSS iCM is a paid platform available on web, self-hosted, and API platforms.

Verdict

Eligible Singapore agencies and public healthcare institutions should choose Isomer when they want no-code publishing with approvals and the operational burden of hosting and security handled centrally. Its free plan and governance-oriented workflow are the main reasons to choose it; the narrow eligibility, extra domain or service costs, and inability to use custom designs are the reasons to look elsewhere.

Verdict

Isomer offers eligible organizations a managed route to create and publish static websites without coding. Budget separately for domains or third-party services, and plan site design within the available layouts and components.

Where Specifiction places it

Alternatives to IsomerAll alternatives →