0121 468 0600 | info@opace.co.uk
Get in Touch

Opace tools · built from real client work

Useful software, made by the people who use it.

Our apps, plugins, and add-ons started as answers to problems we met while building websites, writing content, and reviewing SEO. We make the useful ones available to everyone.

Browse the tools Suggest a tool
01 Cost Planning calculator UK Website Cost Calculator 02 Astro Astro add-on Astro Visual Editor 03 AI WordPress plugin Opace AI Scribe

Current releases

Tools you can use, inspect, and improve.

Each product has a clear home, current availability, and a direct route to its source or official listing.

Free, no email required

Planning calculator

UK Website Cost Calculator

Estimate setup and ownership costs for a UK website, compare DIY, freelancer, and agency routes, and inspect the sources and assumptions behind every result.

Open the calculator
Open-source release candidate

Astro add-on

Astro Visual Editor

Edit rendered text and SEO, reorder declared sections, review a queue of changes, and write validated updates back to Astro source files.

Explore the Astro editor
Available on WordPress.org

WordPress plugin

Opace AI Scribe

A free, open-source WordPress writing assistant with keyword research, editable prompts, SEO metadata, and OpenAI or Anthropic model support.

View AI Scribe
Available in the Chrome Web Store

Chrome extension

Essential SEO Toolkit

Open trusted SEO, speed, audit, backlink, technical, and social analysis tools for the page you are viewing without copying its URL.

View the Chrome extension
Open-source on GitHub

Website feedback app

Opace Annotate

Review HTML mock-ups and live websites with pin-based feedback, responsive viewport checks, saved comments, and shareable PDF reports.

View Opace Annotate

Opace Agent Skills

Practical skills for the people building with AI.

Our open-source skills package repeatable design, accessibility, motion, and development experience into clear instructions for coding agents and their human teams.

Open-source skill collection

Opace Agent Skills

Practical Agent Skills for web design, UI, motion, accessibility and future SEO workflows across Codex, Claude Code, Cursor, Copilot, Gemini, and other coding agents. Browse Agent Skills

Design and motion skill

AI UI/UX Motion Engine

A focused Opace Agent Skill for distinctive AI website design, UI/UX, motion graphics and 3D web work, with practical production guidance. View the motion skill

More to follow

New Opace skills are being prepared.

Further skills will appear here once their documentation, examples, and release notes are ready to stand behind.

Why Opace builds tools

Small pieces of software can remove a lot of repetitive work.

We build these products when the same task keeps slowing a project down. The UK Website Cost Calculator makes scope, labour, and ownership assumptions visible. The Essential SEO Toolkit collects everyday checks in one Chrome extension. AI Scribe gives WordPress editors a structured writing process. Astro Visual Editor brings reviewable front-end changes to source-controlled sites.

The code and listings also show how our team approaches practical product development. If you need a custom tool, plugin, or web application, our web app developers can help from specification through to testing and release.