Top 4 Open-Source Alternatives to Nibbler

Nibbler

Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.

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Product categories

Developer Tools Email Marketing SEO SEO Tools Social Media Tools User Experience Video Ads Web App Web Development Tools Website Monitoring Website Performance Monitoring Website Testing

Summary

The top open-source alternatives to Nibbler are A11yWatch, Koalati, and Postlight Mercury. 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.

A11yWatch Landing Page
1

A11yWatch

instantly fix web accessibility issues on your website
Pricing:
- Open Source
#SEO #Developer Tools #Web App 1 social mentions
Koalati Landing Page
2

Koalati

Automated website testing and quality control tools for developers and agencies.
Pricing:
- Open Source
- Paid
- Free Trial
- $15.0 / Monthly (Solo plan)
#Website Testing #Web Development Tools #SEO Tools 3 user reviews
Postlight Mercury Landing Page
3

Postlight Mercury

Instant AMP results. Zero development.
Pricing:
- Open Source
#SEO #Web App #User Experience 4 social mentions
Opteo Landing Page
4

Opteo

Opteo searches for statistically significant patterns in an account and creates "optimization tasks" to improve account performance.
Pricing:
- Open Source
#SEO #Email Marketing #Social Media Tools