Loadster
Loader.io
k6 Cloud
LoadForge
LoadUIWeb
LoadFocus
Loadium
OctoPerf
NegativeScreen
f.lux
PinkScreen.org
White Screen Test
My White Screen
LightBulb
WindowTop
SunsetScreen
Loadster is a cloud-based load testing and synthetic monitoring platform for engineers who want to know how their applications behave under real traffic.
Tests run with three types of bots: Protocol Bots for HTTP testing, headless Browser Bots that render full pages and execute JavaScript in real Chrome browsers, and Playwright bots for when you want to use Playwright JS directly.
Loadster scripts can be recorded from Chrome or Firefox with the Loadster Recorder extension, edited in a built-in editor with variables, datasets, and shared includes, and then replayed from multiple cloud regions.
Each test run returns detailed page timings (TTFB, FCP, LCP, CLS, etc) alongside resource waterfalls, screenshots, and full traces you can step through in a self-hosted trace viewer. Tests scale from a handful of virtual users (bots) to hundreds of thousands across distributed cloud engines without you provisioning anything.
The same scripts can be set up as monitors that run on a schedule from chosen regions. Notification policies route incidents to email, SMS, voice, or integrations like Slack and PagerDuty. Projects, roles, and shared test history keep teams aligned on what passed, what failed, and what changed.
Pricing is usage-based via Loadster Fuel, with 50 free units on sign-up and no credit card to start.
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Based on our record, NegativeScreen seems to be more popular. It has been mentiond 8 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Windows Application Negative Screen https://zerowidthjoiner.net/negativescreen. Source: over 3 years ago
After some research I found NegativeScreen, which does exactly what I want, the only caveat is that it affects your entire screen. I'd like this for only a selected few windows, a free program if possible. Source: almost 4 years ago
And if your apps don't support dark mode, force them to: https://zerowidthjoiner.net/negativescreen. Source: over 4 years ago
There's an odd little retro dungeon crawler called Paper Sorcerer that might work for you. It's always high contrast, but I think some areas are light mode instead of dark mode so you might need something that can invert the colors at points (I'm not sure if something like NegativeScreen would work in games). Source: over 4 years ago
Https://zerowidthjoiner.net/negativescreen for Windows, scroll down to the downloads section and unzip the .exe binary anywhere, preferably to the C:\Users\(your username) folder and shortcut on the desktop. Source: over 4 years ago
Loader.io - Loader.io is a simple cloud-based load testing service
f.lux - f. lux is a piece of software for Windows, Mac, Linux, iOS, and Android that provides a blue light filter over your screen. Research suggests limiting our exposure to blue light in the hours before bedtime can help us fall asleep faster.
k6 Cloud - Managed load testing service built on top of the popular open-source project k6.
PinkScreen.org - Complete collection of online screen tools - white screen, colored screens, screensavers, system simulators, and display utilities. Perfect for monitor testing, photography lighting, presentations, streaming, and creative projects.
LoadForge - Better, cheaper load testing for websites, APIs and servers
White Screen Test - Enable bright white screen in full-screen mode on your laptop, computer, or mobile.