Given away

These sources are things people released for others to use. They include libraries, datasets, a textbook and a painting program. Some also describe what giving software away costs.

Part of Society. 20 sources from 14 subjects. A source can carry several themes. These tags are this wiki's own reading, not claims the sources make.

Introduction to Compilers and Language Design

Douglas Thain, University of Notre Dame. From Compilers and interpreters.

The home page of a free compilers textbook, with chapter links and a print edition.

Music Theory for the 21st-Century Classroom

Posted by aanet, with replies from many commenters. From Consonance and tuning.

A long Hacker News thread about a free online music theory textbook by Robert Hutchinson.

What’s new in xenharmlib 0.4.0?

Fabian Vallon (named in the page's copyright line). From Consonance and tuning.

Release notes for version 0.4.0 of xenharmlib, a Python library for microtonal music.

xenharmlib documentation

xenharmlib project. From Consonance and tuning.

A Python library for scales and intervals in many tuning systems.

The World's 2.75B Buildings

Mark Litwintschik. From Databases and storage.

A walkthrough of converting and inspecting the GlobalBuildingAtlas building footprint dataset.

Agent memory as a file format

Cal Paterson. From File-based agent memory.

A proposal for an open agent memory format built from Markdown pages.

FreeMoCap | Free Motion Capture for Everyone

Not stated. From Film, animation and video.

The home page of FreeMoCap, a free open-source markerless motion capture project.

Show HN: ClipJS – Edit your videos from a PC or phone

Posted by mohyware, with replies from many commenters. From Film, animation and video.

A Hacker News thread where a developer presents ClipJS, a browser video editor.

Odyc.js – A tiny JavaScript library for narrative games

Posted by achtaitaipai, with replies from many commenters. From Games and game design.

A Hacker News thread where the creator of Odyc.js answers questions about the library.

GLM-5.2 is the step change for open agents

Nathan Lambert (Interconnects). From Harnesses and agent loops.

A newsletter post arguing that the GLM-5.2 open model is a threshold for coding agents.

Our Paint: A Natural Painting Program

Wu Yiming (WellObserve). From Illustration and concept art.

The product page for Our Paint, a free digital painting program.

EmbeddingGemma 2: an open, lightweight multimodal embedding model

Sahil Dua and Henrique Schechter Vera, Research Engineers, Google DeepMind. From Language models and training.

A Google DeepMind launch post for an open multimodal embedding model.

Smollm3: Smol, multilingual, long-context reasoner LLM

Posted by kashifr, with replies from many commenters. From Language models and training.

A Hacker News thread on a Hugging Face post announcing the SmolLM3 language model.

Getting Started (Strudel documentation)

Not stated. From Music as code and DAW control.

The welcome page of the Strudel workshop, a browser tool for writing music as code.

I hate packaging my software for Linux

Not stated. From Software tools and craft.

A maintainer of the Fresh editor describes the cost of many Linux packaging channels.

Sample Videos

Not stated (Intel IoT DevKit repository, intel-iot-devkit). From Software tools and craft.

A GitHub README lists sample video clips by file name.

Evolutionary Mission Trajectory Generator (EMTG) Open Source Release

Originating author Jacob Englander; maintained by the NASA Goddard EMTG team. From Space and orbital simulation.

The README for NASA Goddard's open-source software for designing spacecraft mission trajectories.

Lox – Oxidized Astrodynamics

Helge Eichhorn and Angus Morrison (copyright holders named in the README). From Space and orbital simulation.

The README of a Rust library, with Python bindings, for orbital mechanics and mission analysis.

Show HN: Air Lab – A portable and open air quality measuring device

Posted by 256dpi, with replies from many commenters. From Systems and hardware.

A Show HN thread where the maker presents an open air quality monitor.

Ooh.directory: a place to find good blogs that interest you

Posted by hisamafahri, with replies from many commenters. From Writing and the small web.

A Hacker News thread about Ooh.directory, a one-person directory of blogs sorted by topic.