FUSIO (FUSIO Ltd, Company No. 245771) is a Dublin-based digital agency operating since 1995, providing web strategy and interface design, back-end development (CMS and eCommerce), accessibility and SEO, mobile app development, and hosting for Irish state bodies, non-profits, cultural organizations and established brands.

FUSIO fits Irish public bodies, non-profits, cultural institutions and established brands that want one long-established Dublin agency across web design, back-end development and mobile app delivery. Its published client and case-study list spans state and semi-state bodies (Met Éireann, Coimisiún na Meán), professional and legal bodies (The Bar of Ireland), higher education (University of Galway), non-profits (Foróige, Amnesty International, Women's Aid), healthcare (St Vincent's Hospital), utilities (Bord Gáis Energy) and cultural/entertainment brands (Riverdance, The Dubliners Encore), indicating comfort with public-sector procurement as well as established consumer and cultural brands rather than early-stage startups.
FUSIO's published service lines are web strategy and interface design, back-end development (CMS builds and eCommerce platforms), accessibility and SEO, mobile app development, and hosting and email services, delivered as an in-house team spanning creative, development, project management and systems administration.
Published case studies describe a redesigned weather app for Met Éireann (national meteorological service) with a new user interface and expanded feature set; the My Bord Gáis Energy app letting customers manage gas and electricity accounts; the Find a Barrister app built for The Bar of Ireland's directory of practising barristers; and a website for Theatronomics, a University of Galway research and public-engagement initiative. The site also lists web projects for Foróige (national youth organization) and Coimisiún na Meán (Ireland's media regulator).
FUSIO Ltd (Company No. 245771) is registered at 26 Strand Street Great, Dublin, D01 R3P6, and states it launched in 1995 with a free enhanced CD-ROM distributed in every new Mac sold in Ireland, going fully online in 1996; the about page also credits the studio with early Irish mobile-web (a 1999 WAP platform built with Digifone) and virtual-tourism (a QuickTime-based Dublin VR project) work. The about page names nine current staff including Diarmaid Mac Aonghusa (Managing Director) and Mat May (Creative Director). Root robots.txt returns HTTP 200, disallowing only the WordPress admin path (with its AJAX endpoint explicitly re-allowed) and carrying an explicit Yoast-managed block permitting everything else; a sitemap is declared. The dedicated contact page — publishing office hours, a general enquiries address and a separate after-hours support address rather than a lead-capture form — is used as the buyer contact destination since it is the site's purpose-built first-party contact page.