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OnlineOrNot VS DotKernel API

Compare OnlineOrNot VS DotKernel API and see what are their differences

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HasData is a top web scraping platform for developers and enterprises. It delivers structured, real-time data from the web using scalable APIs and no-code tools, removing the need to manage proxies, browsers, or anti-bot systems. featured
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Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

OnlineOrNot logo OnlineOrNot

Reliable alerts when your website goes down.

DotKernel API logo DotKernel API

An opinionated framework-less tool aimed at intermediate-to-advanced level programmers to start implementing REST APIs swiftly and efficiently.
  • OnlineOrNot Landing page
    Landing page //
    2025-09-03

Monitor your websites, APIs, cron jobs & scheduled tasks, Get immediate alerts via Email, SMS, Slack, PagerDuty (+ more).

Not present

Dotkernel API is a PHP REST API application built on top of Mezzio microframework , using Laminas components. DotKernel API is an alternative for legacy Laminas API Tools (formerly Apigility) applications

OnlineOrNot

Website
onlineornot.com
Pricing URL
Official OnlineOrNot Pricing
$ Details
freemium $12.0 / Monthly (5 checks (uptime, keyword, cron), 1 status page, unlimited users)
Release Date
2021 February
Startup details
Country
France
City
Toulouse
Founder(s)
Max Rozen
Employees
1 - 9
Edit details

DotKernel API

Website
dotkernel.org
Pricing URL
-
$ Details
free
Release Date
2018 May
Edit details

OnlineOrNot features and specs

  • Ease of Use
    OnlineOrNot boasts a user-friendly interface that makes it simple for users to set up and monitor websites for uptime.
  • Customization Options
    The service offers a range of configuration options, allowing users to tailor monitoring alerts and reports to their needs.
  • Real-time Monitoring
    OnlineOrNot provides real-time monitoring capabilities, helping users to quickly identify and respond to downtime issues.
  • Multiple Check Types
    The platform supports a variety of check types including HTTP, HTTPS, and keyword checks, ensuring comprehensive monitoring.
  • Notification Integrations
    OnlineOrNot integrates with various notification systems like email, Slack, and other channels, ensuring that users are promptly informed of any issues.
  • Affordable Pricing
    The service offers competitive and transparent pricing plans, making it accessible for both small businesses and larger enterprises.

Possible disadvantages of OnlineOrNot

  • Limited Advanced Features
    While adequate for most needs, OnlineOrNot may lack some advanced features that specialized monitoring services provide.
  • Support Availability
    Customer support options may be limited, particularly for lower-tier plans, which could be a drawback for users requiring immediate assistance.
  • Scalability Issues
    The platform might not be as scalable as some competitors, which could pose challenges for very large enterprises needing to monitor a vast number of sites.
  • Learning Curve
    Despite its user-friendly interface, some users may still face a learning curve when first getting started with the platform.
  • Dependency on Internet
    As an online service, OnlineOrNot itself depends on having a reliable internet connection, which could be a drawback if users have unstable internet access.

DotKernel API features and specs

  • Open Source
    DotKernel is an open-source project, which means the source code is publicly available, allowing developers to modify and contribute to it freely.
  • Robust Middleware
    DotKernel is built on top of Zend Expressive (now known as Laminas), which provides a robust middleware architecture for creating scalable and efficient web services.
  • Community Support
    Being open-source and part of the larger Zend Framework (Laminas) community, DotKernel benefits from community support and shared expertise.
  • RESTful API Development
    DotKernel is designed with RESTful API development in mind, providing tools and structure that facilitate the creation of REST-compliant services.
  • Extensible
    Its modular architecture allows for easy extension and customization, making it adaptable to various project requirements.

Possible disadvantages of DotKernel API

  • Steep Learning Curve
    For developers unfamiliar with Zend Expressive or middleware-based frameworks, the learning curve can be steep compared to more straightforward frameworks.
  • Limited Out-of-the-Box Features
    Unlike some frameworks that offer extensive built-in features, DotKernel requires additional setup and configuration to implement certain functionalities.
  • Community Size
    While DotKernel benefits from community support, its community is smaller compared to larger frameworks like Laravel or Symfony, which may limit the availability of tutorials and third-party extensions.
  • Migration Overhead
    DotKernel's reliance on the transition from Zend to Laminas might necessitate migration efforts for ongoing projects, impacting development timelines.

Analysis of OnlineOrNot

Overall verdict

  • Yes, OnlineOrNot is a good tool for individuals and businesses looking to monitor their website's availability and performance. It offers reliable monitoring features, timely alerts, and comprehensive reporting to help users maintain high website uptime and performance.

Why this product is good

  • OnlineOrNot is a website monitoring service that provides uptime and performance monitoring for websites and web applications. It helps users ensure that their websites are accessible and performing optimally, by providing real-time alerts and detailed reports on downtime and response times.

Recommended for

  • Web developers who need to monitor website uptime and performance.
  • Businesses that rely on their website for customer engagement and sales.
  • IT professionals who manage multiple websites and need automated monitoring tools.
  • E-commerce platforms looking to ensure a seamless user experience with minimal downtime.

Analysis of DotKernel API

Overall verdict

  • DotKernel API is a solid choice for PHP developers seeking a lightweight, modular framework specifically designed for building RESTful APIs, backed by an established open-source project with years of active development.

Why this product is good

  • Built on Mezzio (formerly Zend Expressive), leveraging mature and well-tested PHP components
  • Modular architecture allows developers to include only the components they need, keeping applications lean
  • Provides built-in support for common API needs like authentication, versioning, and standardized responses
  • Open-source with an active GitHub presence, allowing community contributions and transparency
  • Backed by DotKernel, an organization with a long history in PHP framework development since the early 2000s
  • Good documentation and examples to help developers get started quickly
  • Follows modern PHP standards and practices, including PSR compliance

Recommended for

  • PHP developers building RESTful APIs from scratch
  • Teams looking for a modular, non-monolithic framework alternative to larger frameworks like Symfony or Laravel
  • Projects requiring lightweight, performance-focused API backends
  • Developers already familiar with Mezzio or Zend Framework ecosystem
  • Startups or small teams wanting open-source tools without licensing costs
  • Backend services that prioritize simplicity and specific API-focused functionality over full-stack MVC features

OnlineOrNot videos

+ Add

Monitor a Website with OnlineOrNot

More videos:

  • Tutorial - Monitor Website Keywords with OnlineOrNot
  • Tutorial - Create a public Status Page with OnlineOrNot

DotKernel API videos

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

Add video

Category Popularity

0-100% (relative to OnlineOrNot and DotKernel API)

OnlineOrNot

DotKernel API

Uptime Monitoring
100 100%
Uptime Monitoring
0% 0
REST API
0 0%
REST API
100% 100
Website Monitoring
100 100%
Website Monitoring
0% 0
API Tools
0 0%
API Tools
100% 100

User comments

Share your experience with using OnlineOrNot and DotKernel API. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, OnlineOrNot seems to be more popular. It has been mentiond 72 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

OnlineOrNot mentions (72)

  • Ask HN: What are you working on? (April 2026) (Non AI)
    Still OnlineOrNot (https://onlineornot.com/) - I've been working on adding more and more configurability to the browser checks feature. More recently, I've made it so you can drop your existing playwright test suites into the code editor, and it'll Just Work. A whole bunch more work to do around that, but I think letting folks drop code in makes more sense than continuously updating the UI. - Source: Hacker News / 4 months ago
  • Ask HN: What Are You Working On? (March 2026)
    I've been celebrating five years of working on OnlineOrNot (https://onlineornot.com/) by adding more features for teams that build software: - 2FA, PassKey, and password-based login for folks that hate magic links - Moved my entire API from GraphQL to REST so I can fully dogfood the API I offer - Added an audit log as standard on all plans - Built a terraform provider... - Source: Hacker News / 5 months ago
  • Ask HN: What Are You Working On? (December 2025)
    OnlineOrNot (https://onlineornot.com) Planning on wrapping up the year with a year in review post (thankfully I've been writing monthly updates as I go, should save some time). Apart from that, clearing up tech debt that helped me ship fast, but was ultimately a bad fit for the business (Next.js and GraphQL). - Source: Hacker News / 8 months ago
  • Ask HN: What Are You Working On? (October 2025)
    Still a one-person project (since 2021): https://onlineornot.com I'm still rebuilding OnlineOrNot's frontend to be powered by the public REST API. Uptime checks are now fully powered by a public API (still have heartbeat checks, maintenance windows, and status pages to go). Doing this both as a means of dogfooding, and adding features to the REST API that I easily dumped into the private GraphQL API without... - Source: Hacker News / 10 months ago
  • Ask HN: What Are You Working On? (September 2025)
    I'm rebuilding OnlineOrNot's frontend to be powered by the public REST API. Doing this both as a means of dogfooding, and adding features to the REST API, that I easily dumped into the private GraphQL API without thinking too hard. Basically I've realised GraphQL has taken me as far as it can, and I should've gone with REST to start with. That, and after I finish the first milestone (uptime checks + cron job... - Source: Hacker News / 10 months ago
View more

DotKernel API mentions (0)

We have not tracked any mentions of DotKernel API yet. Tracking of DotKernel API recommendations started around May 2024.

What are some alternatives?

When comparing OnlineOrNot and DotKernel API, you can also consider the following products

UptimeRobot - Free Website Uptime Monitoring

Apigility - Apigility is an API Builder, designed to simplify creating and maintaining useful, easy to consume, and well structured APIs.ย 

Uptime Kuma - A fancy self-hosted monitoring tool.

API Platform - REST and GraphQL framework to build modern API-driven projects

Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.

StatusCake - Website Uptime Monitoring & Alerts โ€“ Free Unlimited Downtime Monitoring

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