What is Stellar used for?

Stellar is an A/B testing platform with a no-code visual editor, a lightweight script, real-time results and an autopilot mode that writes and runs challengers. It is a good fit for testing landing page headlines without a dev ticket, matching page copy to ad keywords and running continuous experiments on a signup button.

Yes. Stellar has a free plan. Sandbox is free for up to 5k tracked users. Plus costs $29, Pro $99 and Scale $399 per month billed annually, with 14-day trials; Enterprise is quoted.

Is Stellar open source?

No. Stellar is proprietary (closed-source) software and can't be self-hosted. In the Marketing & SEO category, open-source options include Dub, YOURLS and Sink.

What are some alternatives to Stellar?

Stellar competes with VWO, AB Tasty and Optimizely Web Experimentation.

Stellar: features, pricing and alternatives

About Stellar

Stellar lets agencies and growth teams run website experiments without developers. An editor opens directly on the live site, where users change text, images, styles and layout, set traffic allocation and launch, with custom JavaScript and CSS for finer control and dynamic keyword insertion to match landing page copy to ads. The tracking script is 5.4 KB and the product is cookieless by default.

Results update in real time with breakdowns by device, UTM parameters, day and hour, and data can be sent to GA4, Segment and Mixpanel. Goals can be page visits, clicks or form submissions, with several conversion events per test. An AI editor assistant drafts headlines and calls to action, AI insights give confidence scores and next steps, and Autopilot writes a challenger, pits it against the current champion, keeps whichever wins and starts the next test, with approval for each test optional. Heatmaps and funnels are also listed, and a 14-day free trial is offered.

Key features

No-code visual editor on your live site
5.4 KB cookieless script
Real-time results with GA4 and Mixpanel integrations
Autopilot that writes and tests challengers
AI assistant for headlines and copy variants
Heatmaps and funnels alongside experiments

Good fit for

Testing landing page headlines without a dev ticket
Matching page copy to ad keywords
Running continuous experiments on a signup button

Tags: ab-testing; cro; experiments; visual-editor; analytics; heatmaps; cookieless; saas

Stellar: questions and answers

What is Stellar used for?: Stellar is an A/B testing platform with a no-code visual editor, a lightweight script, real-time results and an autopilot mode that writes and runs challengers. It is a good fit for testing landing page headlines without a dev ticket, matching page copy to ad keywords and running continuous experiments on a signup button.
Is Stellar free?: Yes. Stellar has a free plan. Sandbox is free for up to 5k tracked users. Plus costs $29, Pro $99 and Scale $399 per month billed annually, with 14-day trials; Enterprise is quoted.
Is Stellar open source?: No. Stellar is proprietary (closed-source) software and can't be self-hosted. In the Marketing & SEO category, open-source options include Dub, YOURLS and Sink.
What are some alternatives to Stellar?: Stellar competes with VWO, AB Tasty and Optimizely Web Experimentation.