Software Alternatives & Startups

Sherlo VS Opalstack

Compare Sherlo VS Opalstack and see what are their differences

Sherlo

Visual regression testing for React Native. Compare screenshots on iOS & Android simulators, catch visual regressions before release. Free plan, no credit card.

Sherlo Baseline vs snapshot, side by side
Rating
0 reviews
Pricing
Freemium
Opalstack

Managed Hosting for developers, entrepreneurs, and businesses like yours

Opalstack Landing page
Rating
0 reviews
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Base details

Website, pricing, platforms and company facts side by side.

Sherlo
Opalstack
Website sherlo.io opalstack.com
Pricing
Platforms
SaaS Web Cloud CLI +1
Company Startup from Poland · 1 - 9 employees · 2022
Listed in

About Sherlo and Opalstack

In their own words, as submitted to SaaSHub.

Sherlo
Opalstack

Sherlo is a visual regression testing tool built specifically for React Native. On every build it renders your app on real iOS and Android simulators in the cloud - native rendering, not React Native Web - screenshots every screen, and compares each against the previous version pixel by pixel....

Read more about Sherlo

No description of Opalstack yet.

Features and specs

What each product offers, as listed by its team.

Sherlo 6 features
Opalstack 5 features
  • iOS & Android simulators
    Renders your app on real iOS and Android simulators in the cloud - no device farm to manage.
  • Pixel-by-pixel diffs
    Screenshots every screen and compares each against the previous version, flagging changed pixels.
  • Team review app
    Developers, designers, PMs and QA review changes together and approve or reject before release.
  • Storybook integration
    Turns your existing Storybook stories into an automated visual test suite.
  • CI integration
    Runs in CI on every build via the CLI; both platforms in one run.
  • Device/theme/language matrix
    Test across many devices, screen sizes, themes and languages from one config.
  • Developer-Friendly Hosting
    Opalstack is designed with developers in mind, offering SSH access, Git integration, and support for multiple programming languages and frameworks including Python, Node.js, Ruby, and PHP, giving developers granular control over their hosting environment.
  • Affordable Pricing
    Opalstack offers competitive pricing for shared and managed hosting plans, making it an accessible option for small businesses, freelancers, and individual developers who need robust features without enterprise-level costs.
  • Modern Control Panel
    Opalstack provides a clean, modern, and intuitive web-based dashboard for managing sites, applications, databases, and email accounts, which is a significant improvement over older-style hosting control panels like cPanel.
  • Strong Support for Multiple Applications
    The platform supports a wide variety of application types including WordPress, Django, Flask, Express, static sites, and more, allowing users to host diverse projects on a single account with easy deployment.
  • Reliable Infrastructure and Support
    Opalstack is built by former WebFaction team members, bringing experienced hosting expertise. They offer responsive customer support and a reputation for stable, well-managed server infrastructure with good uptime.

Possible disadvantages

  • Smaller Community and Ecosystem
    Compared to major hosting providers like DigitalOcean, AWS, or even shared hosts like SiteGround, Opalstack has a smaller user base, which means fewer community tutorials, third-party guides, and forum discussions available for troubleshooting.
  • Limited Scalability Options
    Opalstack is primarily a shared hosting provider, which means it may not be the best choice for high-traffic applications or projects that require rapid, on-demand scaling of resources like CPU, RAM, or storage.
  • Not Ideal for Beginners
    While developer-friendly, Opalstack's approach can be intimidating for non-technical users. Setting up applications often requires familiarity with the command line and server configuration, which may not suit those looking for simple one-click solutions.
  • Limited Data Center Locations
    Opalstack offers a relatively small number of data center locations compared to major cloud providers, which may result in higher latency for users targeting audiences in regions not well-served by the available server locations.
  • Fewer Managed Services and Add-ons
    Unlike larger hosting platforms, Opalstack lacks a wide range of managed add-on services such as built-in CDN integration, managed backups with granular restore options, or one-click SSL management that more mainstream providers offer out of the box.

Analysis

An editorial look at what each product does well and who it suits.

Sherlo
Opalstack

No analysis of Sherlo yet.

Overall verdict

  • Opalstack is a solid choice for developers and tech-savvy users seeking an affordable, flexible control panel hosting solution with good performance and transparent pricing, though it may require more technical know-how than mainstream cPanel hosts.

Why this product is good

  • Uses a custom lightweight control panel that's fast and efficient compared to resource-heavy alternatives like cPanel
  • Offers straightforward, transparent pricing without hidden fees or aggressive upselling
  • Provides SSD storage and solid server performance for the price point
  • Supports multiple app types including Python, Node.js, and various frameworks beyond typical PHP hosting
  • Founded by the original creators of WebFaction, bringing significant hosting industry experience
  • Good for running multiple websites/apps under one account with granular resource control
  • Responsive customer support with a knowledgeable team
  • No long-term contracts required, allowing flexibility

Recommended for

  • Developers who need support for Python, Node.js, or other non-PHP applications
  • Users comfortable with a more technical, non-cPanel control panel interface
  • Small businesses or freelancers hosting multiple websites who want granular control
  • Former WebFaction users looking for a similar service after its shutdown
  • Budget-conscious users who want VPS-like flexibility without full server management
  • Users who prioritize transparent pricing over bundled marketing extras

Videos

Walkthroughs and reviews on video.

Sherlo 1 video + Add
Opalstack 0 videos + Add

Visual testing for React Native · Sherlo demo

No Opalstack videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Sherlo
Opalstack
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

Questions & Answers

As answered by people managing Sherlo and Opalstack.

What makes your product unique?

Sherlo's answer

Sherlo is the visual regression testing tool built specifically for React Native. It renders your app on real iOS and Android simulators in the cloud - native rendering, not React Native Web - and diffs every screen pixel by pixel. Web-first tools like Percy, Chromatic, and Applitools can't test how a React Native app actually looks on a device; Sherlo does.

Why should a person choose your product over its competitors?

Sherlo's answer

Because it's the React Native specialist. Percy, Applitools, and Chromatic are multi-platform generalists that test web-framework Storybook in a browser, not native iOS/Android rendering. Sherlo runs your app on real iOS and Android simulators, covers both platforms in one run, plugs into CI, and includes the cloud simulators from a free plan - no device farm, no credit card.

How would you describe the primary audience of your product?

Sherlo's answer

React Native teams that ship UI frequently - developers, designers, PMs, and QA who want to catch visual regressions before release. It fits teams already using Storybook and anyone shipping to many devices, themes, and languages who can't check them all by hand.

What's the story behind your product?

Sherlo's answer

Sherlo was built by React Native developers who kept shipping UI bugs that slipped past functional tests and were painful to catch by hand across devices. Existing tools were web-first and didn't test native mobile rendering - so they built the visual testing tool they wanted for React Native.

Which are the primary technologies used for building your product?

Sherlo's answer

React Native, TypeScript, an open-source SDK/CLI (github.com/sherlo-io/sherlo), cloud-hosted iOS and Android simulators, and a web app for reviewing diffs. Integrates with Storybook and any CI pipeline.

User comments

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