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Dev tools · alternatives · 2026

24 alternatives to I wanted to measure CO2 in my office, so I build a C++ WebServer/App

A simple webserver / CO2 Monitor. Contribute to Maddimax/MadCO2 development by creating an account on GitHub.

This is a C++ web server and application that measures CO2 levels in an office environment. Built by someone seeking to monitor air quality at their workspace, it provides real-time CO2 data through a web interface.… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. I wanted to measure CO2 in my office, so I build a C++ WebServer/App launched in 2019; newer entries below may have overtaken it.

  1. 1AL

    Hi HN! I’ve been working on an air quality measuring device called Air Lab for the past three years. It measures CO2, temperature, relative humidity, air pollutants (VOC, NOx), and atmospheric pressure. You can log and analyze the data directly on the device — no smartphone or laptop needed. To better show what the device can do and how it feels like, I spent the past week developing a web-based simulator using Emscripten. It runs the stock firmware with most features available except for networking. Check it out and let me know what you think! The firmware will be open-source and available…

    2025 · networkedartifacts.com · its alternatives →

  2. 2

    CO₂ & Temperature monitor. Contribute to larsp/co2monitor development by creating an account on GitHub.

    2018 · github.com · its alternatives →

  3. 3

    Monitor your world with Enviro and Enviro + Air Quality for Raspberry Pi!

    2019 · shop.pimoroni.com · its alternatives →

  4. 4

    In the cold season we tend to keep the windows closed. The air gets "stale": humidity often rises above 60 %, which can harm our wellbeing and promote mould. At the same time the CO₂ level in the air increases, which impacts our ability to concentrate. So I built a room air monitor that stays unobtrusive as long as everything is in the green zone, but becomes deliberately noticeable once thresholds are exceeded. For my personal love of statistics I also visualise the measurements in a clear dashboard.

    Nov 2025 · nicolin-dora.ch · its alternatives →

  5. 5

    Monitoring for websites, APIs, and cron jobs

    2024 · webgazer.io · its alternatives →

  6. 6

    A comprehensive indoor air quality monitoring system built with ESP32-C3 Super Mini and multiple environmental sensors. This project helps you monitor CO2, temperature, humidity, volatile organic compounds (VOCs), nitrogen oxides (NOx), and particulate matter (PM1.0, PM2.5, PM10) to maintain healthy air quality in your home or office.

    2025 · github.com · its alternatives →

  7. 7MC

    Have you ever wondered about the carbon footprint of your API? This week, the 27th climate summit takes place in Egypt. This inspired us to draw attention to the emissions produced by our online behaviour. We introduced some CO2-related features to our API testing tool: - Calculate carbon emissions of an API call - Set up a check to validate that your API endpoint doesn't cross the limit when it comes to emissions - Test all your API endpoints and get an approximate calculation of your API emissions in total We hope that by using these features, you will become more aware of the carbon…

    2022 · docs.stepci.com · its alternatives →

  8. 8

    Convert activity data into carbon metrics, automatically

    2022 · climatiq.io · its alternatives →

  9. 9CD
  10. 10
    Airboxlab▲108

    Open source air quality monitor you can build yourself

    2015 · airboxlab.foobot.io · its alternatives →

  11. 11RT
  12. 12

    Find out the how much CO2 your website emits

    2019 · websitecarbon.com · its alternatives →

  13. 13

    Monitoror is a wallboard monitoring app to monitor server status; monitor CI builds progress or even display critical values

    2020 · monitoror.com · its alternatives →

  14. 14

    API for estimating carbon emissions of organizations

    2023 · carbonsutra.com · its alternatives →

  15. 15AA

    Hi all, We're Fabienne and Ewan of Climacrux. Today we're proud to launch our latest project to try and make carbon dioxide removal as accessible as possible: CDR Platform [1]. In short: it’s an API to connect to a portfolio of carbon removers. You can purchase from as low as a single gram and select from both natural and technological removal methods. Longer: A couple of years ago we launched an alternative to carbon credits, Carbon Removed[2], designed for individuals to buy and subscribe to CDR. But we always had the nagging thought that there was more that could be done. CDR Platform is…

    2022 · docs.cdrplatform.com · its alternatives →

  16. 16

    A beautiful web dashboard for Linux. Contribute to tariqbuilds/linux-dash development by creating an account on GitHub.

    2014 · github.com · its alternatives →

  17. 17

    Coppers is a custom test harnass for Rust that measures the energy usage of your test suite. - ThijsRay/coppers

    2022 · github.com · its alternatives →

  18. 18

    The smart air quality tracker to help you find clean air

    2017 · plumelabs.com · its alternatives →

  19. 19

    A monitoring station for carnivorous flora. Contribute to blackrabbit17/xenolab development by creating an account on GitHub.

    2025 · github.com · its alternatives →

  20. 20

    Hi, we're Zerofy, and our goal is to build a fully automated, real-time, and holistic carbon emission tracking app for households! Our approach relies on tapping all digital data streams representing your life and calculating carbon emissions from them. In the linked post, we describe our approach, show a demo app, and are soliciting feedback! (Once we track emissions, we want to build AI tech that helps reduce. But that's for another post.)

    2022 · zerofy.net · its alternatives →

  21. 21

    Live Data and thematic Chat based on the nearest station.

    2020 · its alternatives →

  22. 22

    Real-time quantification of greenhouse gas removals

    Apr 2026 · hyphen.earth · its alternatives →

  23. 23

    Measure and reduce your website's CO2 emissions!

    2022 · greenframe.io · its alternatives →

  24. 24

    Daily tweets of global CO2 levels in our atmosphere.

    2021 · twitter.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →