Top 5 Open-Source Alternatives to Happy Owl

Product categories

Browser Extension Browsing Experience Chat Communication Dark Mode Design Tools Developer Tools Email Email Clients Group Chat & Notifications Instant Messaging Messaging

Summary

The top open-source alternatives to Happy Owl are Midnight Lizard, Stylus, and Dark Reader. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

midnight-lizard.org
1

Midnight Lizard

Accessible color schemes for all websites
Pricing:
- Open Source
#Browser Extension #Dark Mode #Browsing Experience
Stylus Landing Page
2

Stylus

EXPRESSIVE, DYNAMIC, ROBUST CSS
Pricing:
- Open Source
#Developer Tools #Browser Extension #Dark Mode 11 social mentions
Dark Reader Landing Page
3

Dark Reader

Reduce eye strain in your browser with this extension that provides a dark theme for browsing.
Pricing:
- Open Source
#Browser Extension #Dark Mode #Developer Tools 183 social mentions
Slack Themes Landing Page
4

ST

Slack Themes

Make your Slack pretty with custom themes
Pricing:
- Open Source
#Email #Email Clients #Communication 1 social mentions
Element.io Landing Page
5

Element.io

Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Pricing:
- Open Source
- Free
#Group Chat & Notifications #Communication #Chat 1 social mentions