A website housing a collection of themes that chan.
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OpenUserCSS
Alternatives
| # | Image | App Name | Features | Platforms | Price | Website Link |
| 1 |  | Dark Reader | Chrome | Mac Safari Windows Firefox Linux | Free | Website |
| 3 |  | FreeStylerWs | Chrome | Mac Chrome OS Safari Windows Android Opera Firefox Linux | Free | Website |
| 4 |  | UserStyles.org | Web | Free | Website |
