My area has been plagued with forest fires over the past few months. I was looking at tools to contribute air quality reading.

One service I found was called Purple. But here's the kicker - You contribute data for free. But they CHARGE you for API calls.

After all this setup, I was furious that some company was going to profit. I immediately returned their kit and got a open source one that contributed to OpenAQ.

cross-posted from: https://slrpnk.net/post/41746211

Eclipse SUMO is a free and open source traffic simulation suite, highly portable, microscopic and continuous traffic simulation package designed to handle large networks.

It allows modelling of intermodal traffic systems - including road vehicles, public transport and pedestrians. Included with SUMO is a wealth of supporting tools that automate core tasks for the creation, the execution and evaluation of traffic simulations, such as network import, route calculations, visualization and emission calculation. SUMO can be enhanced with custom models and provides various APIs to remotely control the simulation

Licensed under the EPLv2 (Eclipse Public License V2)

TL;DR: The growth of ListenBrainz has caught up with us, and our limited team is working on replacing central parts of our infrastructure. In the meantime, many features are unstable

The ultimate gathering for the world's best office suite.

When: September 10—12, 2026

Where: Pordenone, Italy 🇮🇹

Why: To learn, have fun and plot against Microsoft Office

If you need a VISA, please get in touch with the organization team by sending an email at conference@libreoffice.org as soon as possible, to get an invitation letter.

If you need an accommodation, please get in touch at conference@libreoffice.org. The local tourism organization will handle requests based on your needs, providing an accommodation with an agreed discounted rate.

Hi everyone,

Between Google Play Integrity API lockdowns, Apple App Attest, and upcoming eID/age-verification mandates, alternative and privacy-focused operating systems (like GrapheneOS, LineageOS, and Linux on mobile) are being systematically locked out of banking, public portals, and everyday apps.

Rather than watching vendor lock-in get worse, I am organizing a European Citizens' Initiative (ECI) working title: "My Device, My OS" to push binding EU legislation for Device Neutrality and Open Attestation.

What we aim to achieve:

• Mandate Open Attestation Standards: Require services operating in the EU to support open, vendor-neutral hardware attestation rather than relying exclusively on proprietary gatekeeper APIs (Google/Apple).
• Ban Device/OS Discrimination: Prevent public services, digital ID wallets, and essential commercial apps from arbitrarily blocking users solely for running independent or de-Googled operating systems.
• Protect Hardware Sovereignty: Enshrine the legal right of consumers to install and run the operating system of their choice without losing access to the digital single market.

Join the Matrix room to discuss, collaborate on the draft, and coordinate next steps:
👉 #my-device-my-os:pollorebozado.com

Feedback, technical insights, and EU organizers are all welcome!

By @gerardPolloRebozado@chachara.club

Article: https://hackaday.com/2026/08/17/may-this-balloon-banjo-resonate-with-you/

Project: https://hackaday.io/project/206413-balloon-banjo-a-tunable-resonator-you-inflate

From the article

As you already know, Open Food Facts calculates and displays the Green-Score (the environmental footprint) for food products in its open database.

But what if you want to know the Green-Score of a recipe prepared at home, in a restaurant or in a canteen?

Thanks to support from ADEME (The French Agency for Ecological Transition) as part of a ‘Call for Commons’ initiative to accelerate the ecological transition, Open Food Facts is embarking on the development of a tool to assess the environmental impact of recipes – which will be free and open source!