INLine Computers is the home of my small independent web projects — browser tools, Chrome extensions, simple apps, games and experiments built by me, Mat, in the UK.
The aim is simple: build useful, lightweight tools that people can open quickly and use without fuss. Some projects are practical utilities, some are classroom or creator tools, and some are experimental games and side projects.
Many of the tools are designed to be privacy-conscious, with as much processing as possible happening directly in your browser rather than being uploaded to a server.
Tools and Projects
These are some of the main tools and projects currently being built or maintained under INLine Computers.
-
Education
VisualizerApp.com
Browser-based document camera for teaching, demos and presentations. Freeze, annotate, split view and record.
Open → -
Creator Tool
ImgTool.app
Create browser-based music visualizers and export videos for YouTube, Spotify Canvas and social media.
Open → -
Input
KeyboardTester.uk
Check keyboard keys, modifiers, ghosting and rollover directly in your browser.
Test → -
Input
MouseTester.uk
Test mouse buttons, double-click behaviour, scroll input and movement issues online.
Test → -
Input
GamepadTester.uk
Test controllers, sticks, drift, buttons, triggers and gamepad input directly in the browser.
Test → -
Display
ScreenTester.uk
Check dead pixels, stuck pixels, gradients, colours and quick display patterns.
Open → -
Audio & Video
AVTester.com
Test audio equipment, webcams and simple AV setups directly in your browser.
Open → -
Education
ClassroomTimerTools.co.uk
Simple classroom countdown timers and a clean stopwatch for teachers and group activities.
Open → -
Security
PasswordGeneratorTool.co.uk
Create strong passwords quickly using a simple browser-based tool.
Generate → -
Audio
ChiptuneAI.app
Small browser music tools, retro audio experiments and a WAV stems mixer.
Open →
Early Playtest: Happy Pitch Tycoon
Happy Pitch Tycoon is one of my current games I'm working on — a cosy UK holiday park tycoon game where you build and manage a small campsite/holiday park in the browser.
It started as a fun side project and is slowly turning into a playable demo with tents, touring pitches, facilities, staff, weather, visitors and small park-management systems.
Chrome Extensions
I have also built and maintained a number of Chrome extensions, including tools for focus, readability and small browser utilities.
- Games Blocker — Block gaming and distraction sites to help users stay focused. 100,000+ installs.
- Dark Read — Improves readability in low-light browsing.
- Motivational Quotes Tab (MQT) — A focused new-tab page with tasks and daily quotes.
- Daily Reminder — Lightweight reminders, break timers and nudges.
- Mo To The Moon — A fun browsing odometer experiment.
Games and Experiments
Some INLine Computers projects are just fun experiments, prototypes or games made while learning and testing ideas.
-
Tycoon
Happy Pitch Tycoon
Build and manage a cosy UK holiday park in this free browser tycoon game.
Play → -
Puzzle
Color Match Cube
A relaxing colour-matching puzzle with a clean design. Free to play in your browser.
Play → -
Hub
Inline-Games.uk
Central hub for browser game prototypes, experiments and playable demos.
Visit → -
Seasonal
Santa Claus Game
A small festive mini-game for the holidays. Family friendly and browser based.
Play → -
Prototype
Marblerun65 Demo
A marble game prototype inspired by classic marble physics games, available on itch.io.
Download →
Dev Notes and Building with AI
I’m planning to add occasional dev notes about the projects I’m building — not a daily news blog, just honest updates when there is something useful to share.
AI tools are part of my workflow. I use them to help with planning, coding, debugging, copywriting, design ideas and learning. The final decisions, testing, publishing and project direction are handled by me.
Over time, I’d like this site to become a simple record of the journey: what I’m building, what works, what fails, and what I learn while trying to build useful independent web projects.
How this site is funded
Many INLine Computers projects are free to use. To help cover hosting, software, tools and development time, some pages may show advertising, use affiliate links, or link to optional paid versions of projects.
Where possible, I try to keep tools simple, useful and transparent about how they work.
Get in Touch
If you have a suggestion, spot a bug, or want to collaborate, I’d be happy to hear from you.
Email: [email protected]
Thanks for visiting — enjoy exploring the tools, projects and experiments.