Alternatives · Browsers
Sizzy alternatives
As of Nov 13, 2026, the highest-graded Sizzy alternative is Responsively App (3.0 GPA). It's also the best free one.
Sizzy compared with 3 alternatives: Polypane, Responsively App and Blisk.
Sizzy is a paid product, starting at $12 per month, billed annually ($15 billed monthly). 2 of the 3 alternatives are free or have a free plan. One more offers a free trial.
Listings checked up to Nov 13, 2026 · Where the facts come from
Black Friday: is there a Sizzy sale?
At a glance
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| SizzyThis tool | From $12/mo | No | macOS, Windows, Linux |
| Polypane | Free trial · from $9/mo | Trial only | macOS, Windows, Linux |
| Responsively App | Free | Free | macOS, Windows, Linux |
| Blisk | Free plan · from $11.99/mo | Yes | macOS, Windows, Linux |
Price against what you get
Sizzy starts at $12 a month and scores 2.0 out of 4 on features, ease of use and platforms. 1 of the 3 alternatives on this chart scores higher and starts lower: Responsively App.
Polypane and Blisk start lower without scoring higher.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
How each one differs from Sizzy
Polypane
Chromium-based browser for web developers, with synced viewports
- Polypane starts at $9 per month, billed yearly ($12 billed monthly).
- Polypane also covers site audit.
- Polypane does not cover screen recording and screenshots, which Sizzy does.
Suits: Front-end developers checking many breakpoints at once
Responsively App
Free open source browser that shows many device sizes at once
- Responsively App is free.
- Responsively App has a free plan, which Sizzy lacks.
- Responsively App is open source, according to its own site.
- Responsively App does not cover screen recording, which Sizzy does.
Suits: Front-end developers checking breakpoints across devices
Blisk
Developer browser for testing sites on many devices at once
- Blisk starts at $11.99 per month, billing basis not confirmed.
- Blisk has a free plan, which Sizzy lacks.
Suits: Front-end developers checking responsive layouts
Limits worth knowing in Sizzy
- There is no free plan and no free trial on the pricing page.
- Coding agents run through the Claude Code or Codex CLI you install, and those providers bill model usage under your own plan.
- It is a desktop developer tool for macOS, Windows and Linux, with no mobile version.
- Checkout and licenses are handled on a separate portal site, and the page says regional pricing is shown at checkout.
Common questions
What are the alternatives to Sizzy?
The alternatives to Sizzy in this directory are Polypane, Responsively App and Blisk. Each one has a side-by-side comparison with Sizzy.
Is there a free alternative to Sizzy?
Yes. Responsively App is free to use. Blisk has a free plan alongside paid ones.
Is there an open-source alternative to Sizzy?
Responsively App is described as open source on its own site.
When were these prices checked?
Each listing shows its own date. On this page they run from Nov 12, 2026 to Nov 13, 2026. Vendors change prices without notice, so confirm on their site before you buy.