Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page.
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Noir AlternativesOnly apps categorised as User Styles Managers
The best User Styles Manager alternative to Noir is User JavaScript and CSS, which is free. If that doesn't work for you, our users have ranked more than 10 alternatives to Noir, but unfortunately only two of them are User Styles Managers.
Alternatives list
Introducing Cascadea, the first custom style manager designed as a Safari App Extension and native macOS app. Cascadea makes it easy to install custom styles that change the look and feel of any website you want.
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