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The home of the modern RISC OS Frosted experience. RISC OS Frosted is a ground-breaking visual theme and
user interface project for RISC OS 5 created by Martin Eastwood.
It brings a fresh, contemporary aesthetic to the classic RISC OS desktop through elegant frosted-glass effects, subtle transparency and blurring, refined shading, higher-DPI iconography, and thoughtfully modernised window decorations and interface elements while honouring RISC OS’s legendary speed, stability, low resource usage, and distinctive direct-manipulation workflow, Frosted delivers a polished, modern look that feels right at home on today’s high-resolution displays and popular hardware such as the Raspberry Pi.
The project also explores complementary variants, giving users beautiful options that evolve alongside the platform. RISC OS One was created to bring the Frosted user interface and its related projects together under one unified, welcoming platform. Here you will find the latest releases of the RISC OS Frosted ThemeDefs, ongoing visual enhancements, and a growing collection of supporting resources, all developed with care and a passion for keeping RISC OS vibrant and relevant. The project is organised around two complementary pillars:
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1. Frosted ThemeDefs, advanced interface styling, visual customisation, and the creation of new themes and design languages for RISC OS.
2. RISC OS One , Dedicated to curated distribution ROMs, pre-configured bundles, refreshed icon sets, modernised UI components, and complete out-of-the-box experiences that showcase the best of Frosted and related improvements.
This website and it's downloads are constantly refreshing as new icons are added.
If you want a new frosted icon for your RISC OS Application contact martin@riscostechnologies.co.uk
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Frosted Iris Web Browser (It Has a New Look!)
Also Provided with !Packman
Instructions1. Load !PackMan from your Apps folder, and make sure you install any updated packages it tells you about.
2. Check PackMan’s version number from its icon bar menu Info window. It should read 0.98 beta. If not, please quit and re-run it. If you have installed the updates mentioned in 1) you should now be on 0.98 beta.
3) From the Packman icon bar menu, go to Advanced Sources
Add the new RISC OS Developments package repository:
http://packages.riscosdev.com/pkg/autobuilt
Also, make sure the default package repositories are installed, in particular:
http://packages.riscosopen.org/packages/pkg/programs-armv5
Tick “Refresh package lists” then Save.
4) Now, assuming you’re on a machine capable of running Iris (an ARMv7 compliant machine ie. Pi 2 onwards), when you look in the package list, you should find Iris list.
Double click on it to install, then follow the screens through to install the Iris program and all its component parts (there are a lot of them).
Iris will be installed into Apps.Network folder although you can change this or move it around.
5) We recommend rebooting before using Iris in case any older module versions are still around.
The first time you open Iris, it may take a bit longer to open its main window because it will be generating font indexes and cache files. Future runs should open more quickly.
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The website also features active community spaces, including General Discussion and Coding Chat rooms. These areas provide RISC OS enthusiasts, developers, and newcomers with a friendly place to collaborate, share ideas, ask questions, showcase work, and help shape the future of the platform. A free registered account is required to participate in the chat areas. Thank you for visiting RISC OS One.
We hope you enjoy exploring the Frosted experience and the exciting possibilities it opens for RISC OS. Whether you’re a long-time user or discovering the platform for the first time, there’s never been a better time to enjoy RISC OS with a modern twist.
RISCOS One is Built using the main source from RISC OS Open Limited
RISC OS is an Open Source operating system owned by RISC OS Developments Ltd and licensed primarily under the Apache 2.0 license.
RISC OS Technologies and RISC OS One is Developed and maintained by Martin Eastwood for the RISC OS Community