Software Alternatives & Startups

quackr VS Opalstack

Compare quackr VS Opalstack and see what are their differences

quackr

Temporary Phone Numbers & Virtual Numbers for SMS Verification

quackr Landing page
Rating
0 reviews
Pricing
Open source Freemium $12.99 / Usage
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.

Which is more popular?

Based on our record, quackr seems to be more popular. It has been mentioned 49 times since March 2021.

social mentions
49 vs 0
SMS popularity
100% vs 0%

Base details

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

quackr
Opalstack
Website quackr.io opalstack.com
Pricing
Open source Freemium $12.99 / Usage Official pricing
Company Startup from the United Kingdom
Listed in

About quackr and Opalstack

In their own words, as submitted to SaaSHub.

quackr
Opalstack

Quackr provides temporary phone numbers, temp numbers, and virtual numbers to receive SMS verification online without a physical SIM card.

Read more about quackr

No description of Opalstack yet.

Features and specs

What each product offers, as listed by its team.

quackr 3 features
Opalstack 5 features
  • Temporary Phone Numbers
    Rent a temporary phone number to receive SMS verification codes online.
  • Receive SMS Online
    Receive SMS messages instantly for OTPs, 2FA, and account verification.
  • Receive Only Service
    Quackr is designed to receive SMS only no calls or outbound messages.

Possible disadvantages

  • Limited Usage
    Because these are temporary numbers, they may not work for receiving important or long-term communication, as the number might expire or be reused by someone else.
  • Service Compatibility
    Not all services accept temporary phone numbers for verification, which can limit the use of Quackr for certain websites or applications.
  • Potential Overuse
    Popular temporary numbers might receive a lot of verification codes or messages, which can become overwhelming and result in missed messages intended for the user.
  • 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.

quackr
Opalstack

Overall verdict

  • Quackr is considered a good service for individuals seeking a simple and efficient solution to avoid using their personal phone number for verification purposes. However, the effectiveness and reliability can vary based on location and service needs.

Why this product is good

  • Quackr is generally well-regarded for its ability to provide temporary phone numbers for SMS verification, which helps users maintain privacy and security when interacting with online services that require phone number verification. It offers a straightforward platform that is easy to use and supports multiple international numbers, making it versatile for users across the globe.

Recommended for

    Quackr is recommended for users who prioritize their privacy by not sharing personal phone numbers, frequent digital nomads engaged with international services, and anyone attempting to bypass SMS verification without a personal or permanent number.

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

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
quackr
Opalstack
100% 100%
SMS
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

Questions & Answers

As answered by people managing quackr and Opalstack.

What makes your product unique?

quackr's answer

Quackr stands out by offering a seamless bridge between free public access and premium private security. Unlike many competitors that rely solely on low quality VoIP numbers (which are often blocked), Quackr provides Private Non-VoIP Numbers sourced from real SIM cards. This ensures high deliverability rates for strict services like Tinder, Gmail, and Banking apps, giving users a level of reliability that standard free sites cannot match.

Which are the primary technologies used for building your product?

quackr's answer

Quackr is built on a robust cloud infrastructure designed for speed and security. We utilize advanced telecommunications APIs to bridge real world SIM networks with our digital dashboard, ensuring near instant SMS delivery. Our frontend uses modern frameworks (like React/Next.js) to ensure a fast, responsive experience on both mobile and desktop.

What's the story behind your product?

quackr's answer

Quackr started with a simple mission to stop SMS spam. We realized that requiring a personal phone number for every minor sign-up was a privacy risk. What began as a free tool to protect users from telemarketers has evolved into a comprehensive privacy platform, helping thousands of users globally verify accounts securely without exposing their real identity.

How would you describe the primary audience of your product?

quackr's answer

Our primary audience consists of privacy conscious professionals, digital marketers, and cybersecurity enthusiasts. This includes social media managers managing multiple accounts, developers testing authentication flows, and individuals who want to secure their personal data against data breaches. They are users who value their digital footprint and are willing to invest in secure, private verification methods.

Why should a person choose your product over its competitors?

quackr's answer

Competitors often provide recycled, spam filled numbers that fail verification checks. Users choose Quackr because we offer guaranteed privacy. With our paid rental option, users get a dedicated number that is theirs alone no shared messages, no interference. We combine the ease of a "one click" free service with the professional reliability of a paid private line, giving users the best of both worlds.

User comments

Share your experience with using quackr and Opalstack. For example, how are they different and which one is better?

Log in or Post with

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

quackr 49 mentions
Opalstack 0 mentions
  • Ask HN: Is there a temp phone number like temp email?
    There are lots of them: https://quackr.io/ https://receive-smss.com/ https://sms24.me/ https://temp-number.com/ https://onlinesim.io/. - Source: Hacker News / about 1 year ago
  • Did people really use "burner phones"?
    I'm also curious because it seems like using a phone with no strings attached today seems almost impossible unless you get an actually old phone, which either works poorly or costs a lot as part of a retro collection or something. Even... Source: about 3 years ago
  • I'm back and the chair has never been stronger.
    You can also take this poll over at bettor edge, and whichever team gets the most votes, will get an extra 5k donated to their respective charity (the loser will still get a 1k donation). So if you are so inclined, head over there and... Source: about 3 years ago

View more

Tracking Opalstack since Sep 2023.

Alternatives to quackr and Opalstack

When comparing quackr and Opalstack, you can also consider the following products.

  • Textverified

    Textverified is a website that is designed as a phone verification service, allowing the user to bypass the phone verifications and receive codes through social media websites and applications.

    Compare Textverified to quackr or Opalstack:

  • SMS-man.com

    SMS-man offers a virtual numbers to receive SMS and create multiple accounts on WhatsApp, Telegram, Instagram, Twitter, Amazon and others. The SMS-man service provides numbers of such countries as China, US, India, Russia, UK, Germany, Ukraine etc.

    Compare SMS-man.com to quackr or Opalstack:

  • Freephonenum

    Freephonenum is a website that receives online SMS, use temporary and disposable numbers from USA and Canada to get verifications code from all around the world for development.

    Compare Freephonenum to quackr or Opalstack:

  • Smspva

    The best SMS activation site! Operating since 2013. Payment by card. 60+ countries numbers. Purchase without registration!

    Compare Smspva to quackr or Opalstack:

  • Receivesms.co

    Receivesms.co is a website that offers virtual and real phone numbers, providing you an opportunity to bypass the SMS, Text, and Call verifications on social media platforms like Twitter, Facebook, Instagram, Telegram, WhatsApp, eBay, and others.

    Compare Receivesms.co to quackr or Opalstack:

  • AnonymSMS

    Totally free online service whereby you can Receive SMS Online, without the need of inputting your own mobile/cell number.

    Compare AnonymSMS to quackr or Opalstack: