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Products that do what Nebenkosten-Guru does

Eine Nebenkosten­abrechnung. Eine Datei. Fertig.

  1. 1
    Bend139

    A modern corporate card built for climate-friendly business

    2023

  2. 2

    The first NFT gas tool for artists and collectors ⛽️🥬

    2021

  3. 3IW
  4. 4

    Measure and reduce your website's CO2 emissions!

    2022

  5. 5
    0xcert123

    Your ID, degree or house. 0xcert-ified on the blockchain

    2018

  6. 6

    Premium Webflow finance template

    2023

  7. 7
    Infracost101

    Open source cloud cost estimator in pull requests

    2021

  8. 8AJ
  9. 9

    A debugging-native language model

    Dec 2025

  10. 10LB

    I built this over the weekend. Any feedback is appreciated. Please note you will need a WebGL enabled browser. Thank you for checking it out. --UPDATE-- HN Traffic is strangling earthbit. There is sporadic downtime due to the web services I am using, if no transactions appear after a few seconds, then please try again in an hour.

    2013 · earthbit.net

  11. 11AA

    Hi All, I created my company: Globemallow.io. Browser extensions for reducing the carbon footprint of the internet. Globemallow calculates CO2 emitted and energy (kWh) usage on webpage load, and provides a personalized sustainable development report on how each page can become more efficient from a sustainable development perspective. An Internet Sustainability Grade is calculated for each webpage. While working on Globemallow, I realized that a significant portion of websites had larger load times due to an asinine amount of analytics (tracking) and advertising scripts executing on each…

    2023 · globemallow.io

  12. 12AI

    Hi HN, We are launching Denormalized (www.denormalized.io), a serverless real-time data platform built on Kafka and Pinot. We felt a bit burnt out by the sheer developer toil we faced when building application around the real-time data stack and set out to create a platform to allow small teams to be very productive with realtime data without having to glue together an elaborate system to serve real-time as well as time series queries. Here is our motivating post. Would appreciate any and all feedback.

    2023 · teamdenormalized.substack.com

  13. 13AO

    It’s just the back end so it logs to MongoDB database so you can add any UI you want to it, feel free to contribute! (Suggestion’?)

    2022 · github.com

  14. 14FL

    Our initial release is a Chrome extension that builds on top of Gmail and Google Calendar. We keep limited trace activity of coding sessions for 30 days to troubleshoot and improve our offering. No data (events, emails) from Google is ever logged or retained. 50 second demo: https://www.youtube.com/watch?v=JQ292bncO_c Chrome extension (free + no login): https://chromewebstore.google.com/detail/fork-for-the-web/mf... We have a lot to learn and build. Would love any and all feedback! Paul & Dalton

    Jul 2026 · withfork.co

  15. 15ZW

    Hey HN! I'm Mike, based in Stockholm/Sweden and I'm the founder of Zero Waste Cloud (https://zerowastecloud.io) - a tool that scans AWS and GCP infrastructure to find cost optimization opportunities while calculating the environmental impact. Almost all businesses can save 20-40% of their cloud costs using this tool (sources at bottom) TLDR: Sign up -> Connect your AWS/GCP -> Scan -> Save 20-40% of your cloud spend. My backstory: I've been a CISO and in IT management for a long time and always been frustrated by how much waste I'd find in every environment - idle EC2…

    2025 · zerowastecloud.io

  16. 16GI
  17. 17B2

    Heyy HN. We’re celebrating 2 years of Bend’s existence as a company and we’ve launched a new API to help you understand the climate impact of business activity, and/or embed climate data in your application. For most companies, 80% of your emissions are from the goods and services that you buy. Unless you’re running a power plant or an airline, odds are you’re not directly combusting lots of fossil fuels. But literally everything we buy has some upstream climate impact, whether it’s the flights and Ubers that we purchase, or our AWS bills (that run on grids powered by natural gas), all…

    2024 · docs.bend.green

  18. 18WW

    Over three months ago, I posted my book on HN and got tremendous +ve reponse. I am happy to inform that I have published the book to leanpub as per the comments I got on HN itself! It is pay as you go model, and the minimum is $0 because I wanted to contribute back to the FOSS Community

    2016

  19. 19IL

    My name is Elliott. For the last three years, I’ve been building a DevOps platform on the best-in-class open source platforms (Kubernetes, Elixir, PostgreSQL, Grafana, etc.). The goal is to give engineering teams access to a modern DevOps infrastructure without needing to have a full SRE/DevOps team dedicated. It’s also open source /fair source - all the source code is here → https://github.com/batteries-included/batteries-included I shipped a public beta today and would love to hear initial reactions, thoughts, and feedback. Here are details of the platform: *…

    2024 · batteriesincl.com

  20. 20

    190+ privacy-first calculators for German tax & law

    Aug 2026 · rechnerzentrale.com

  21. 21KG
  22. 22AO

    As I couldn't find a proper web based open source tool that could help me with my bookkeeping, I spend a week to built one myself. It's based on laravel and provides revenue, expenses, travel allowance and depreciation sections. Everything is then merged to an annual statement, that can be exported as a pdf and used for tax filing. It's far away from perfect (no tests yet), but I would be happy to hear what you think about it and maybe find someone to join in.

    2023 · github.com

  23. 23DN

    Hi everyone, Anuj here, Dataherald CEO. There are a bunch of EXTERNAL data sources in the world that people use a lot -- think census data, Bureau of Labor Statistics (unemployment, inflation), but even proprietary data sources. I was tired of getting these into useable data pipelines every time I need need to use them. Dataherald simply creates data pipelines to hundreds of data sources and then lets you create auto-updating data viz -- all in under 60 seconds. The goal is to enable non-tech users to more easily use data, which has been a huge problem for me throughout my career. We…

    2022 · medium.com

  24. 24W4

    After ~1.5+ yrs of posting here (https://news.ycombinator.com/item?id=18755996) about webgo, this is an update, the release of v4.0.7. I know a lot of people consider "web frameworks, router etc." a joke/amateur/reinventing the wheel. But I've been able to learn a lot from it and am happy maintaining this package. Hope you like it! Webgo maintains its promise of standard library compliance, and getting out of the execution path asap. And this version comes with quite a lot of performance improvement in terms of latency, memory usage and better code altogether.…

    2020

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