marv99

• GitHub: https://github.com/OvertureMaps/
• Data access: https://github.com/OvertureMaps/data

From their starting-page:

Powering current and next-generation map products by creating reliable, easy-to-use, and interoperable open map data

Overture is for developers who build map services or use geospatial data.

Some items from their FAQ:

What types of map data will Overture release?

Overture map data will evolve over time. Initially, we are focusing on layers for transportation, places, 3D buildings and administrative boundaries data. To support next-generation map products, Overture will steadily improve the coverage, resolution and accuracy of existing data. In addition, Overture will introduce new layers as the community prioritizes them.

What is the relationship between Overture and OpenStreetMap?

Overture is a data-centric map project, not a community of individual map editors. Therefore, Overture is intended to be complementary to OSM. We combine OSM with other sources to produce new open map data sets. Overture data will be available for use by the OpenStreetMap community under compatible open data licenses. Overture members are encouraged to contribute to OSM directly.

How will Overture data be licensed?

Generally, Overture data is licensed under the Community Database License Agreement – Permissive v2 (CDLA) unless derived from a source that requires publishing under a different license, such as data derived from OpenStreetMap, that constitutes a “Derivative Database” (as defined under ODbL v1.0), which will be licensed under ODbL v1.0.

When will Overture begin releasing datasets?

Overture will release its first datasets in the first half of 2023. We’re working through our plans and will share more details as soon as we’re ready.

Will Overture release open source code?

Overture will develop open source code to help developers process and effectively use Overture map data and the global entity reference system. Code will be available on GitHub.

From the About-page:

There are many wonderful Free/Open Source Software projects dedicated to photography. Yet there aren’t nearly as many resources dedicated to photographic workflows with them.

This site hopes to rectify that with a simple goal:

To provide tutorials, workflows and a showcase for high-quality photography and cinematography using Free/Open Source Software.

From the About-page:

Did you know that you could store the entirety of Wikipedia on your phone? And read it anywhere, at anytime? [...]

We can make highly compressed copies of entire websites that each fit into a single (.zim) file. Zim files are small enough that they can be stored on users’ mobile phones, computers or small, inexpensive Hotspot.

Kiwix then acts like a regular browser, except that it reads these local copies. People with no or limited internet access can enjoy the same browsing experience as anyone else.

The software as well as the content are fully open-source and free to use and share.

My favorites for offline use are Wikipedia and iFixit, although the step-by-step photos are (by design) very low res.

A partial list of free and/or open-source textbooks.

A free(libre) and open-source webcomic supported directly by its patrons to change the comic book industry!

On the About-page you can find information about the author David Revoy and the philosophy behind his project.

David has also created a nice Lemmy meme

If you like toy robots as much as I do, you will enjoy the picture collection on this sites.

https://www.theoldrobots.com/

https://www.theoldrobots.org/

https://www.theoldrobots.net/

Valuable tool when solving problems at Project Euler.

From the Welcome-page:

Most people use the OEIS to get information about a particular number sequence.

Citing Wikipedia:

The On-Line Encyclopedia of Integer Sequences (OEIS) is an online database of integer sequences. It was created and maintained by Neil Sloane while researching at AT&T Labs. He transferred the intellectual property and hosting of the OEIS to the OEIS Foundation in 2009.[4] Sloane is the chairman of the OEIS Foundation.

OEIS records information on integer sequences of interest to both professional and amateur mathematicians, and is widely cited. As of April 2023, it contains over 360,000 sequences,[5] making it the largest database of its kind.[citation needed]

Each entry contains the leading terms of the sequence, keywords, mathematical motivations, literature links, and more, including the option to generate a graph or play a musical representation of the sequence. The database is searchable by keyword, by subsequence, or by any of 16 fields.

"Project Euler exists to encourage, challenge, and develop the skills and enjoyment of anyone with an interest in the fascinating world of mathematics."

From the about page:

How did Project Euler all start?

Project Euler was started by Colin Hughes (a.k.a. euler) in October 2001 as a sub-section on mathschallenge.net. Who could have known how popular these types of problems would turn out to be? Since then the membership has continued to grow and Project Euler moved to its own domain in 2006.

Who runs Project Euler?

Ideas for new problems come from our own members and they are developed by a team of hard working and talented mathematicians and programmers. So to put it simply, it is the members that run Project Euler.