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A one-minute demo of Safespaces, an open source 3D and VR desktop built on the Arcan project.

Marco Reps builds and tests an open-source 8.5 digit voltmeter based on CERN's high-precision ADC design. The video walks through assembly, soldering and measurement of the resulting instrument.

Casey Muratori follows up his refterm proof-of-concept, a GPU-based terminal renderer, with a second part covering memory usage, glyph sizing and correct Unicode and VT handling. It is built to show that a terminal can be fast and correct without heroic effort.

Zack Freedman introduces Gridfinity, his free, open-source modular workshop storage system of 3D-printable bins and baseplates. The video walks through the design, the parametric templates and the many module types that fit parts, tools and accessories.

A short demo of an open-source Krita plugin that uses Stable Diffusion to generate and edit images in place. It adds ControlNet scribble and line-art support. You select an area, push a button, and new matching content appears.

A two-minute demo of SmartKnob View, an open-source input knob built from a brushless gimbal motor, magnetic encoder and round LCD. Closed-loop torque control gives software-defined detents and end stops.

HERO is a short animated film made entirely in Blender to showcase the Grease Pencil 2D animation tools in Blender 2.8. It mixes hand-drawn 2D with a full 3D pipeline.

A demonstration of Larynx, an offline open source neural text-to-speech system supporting nine languages. The video itself is narrated with a Larynx-generated voice.

A short hyperlapse of a 2019 Toyota Corolla using comma.ai's OpenPilot 0.6.3 to drive 100 miles with no intervention except for the windshield wipers.

Cockpit footage of a Swiss Airbus A340 crew dealing with rising oil temperature in one engine on a Zurich to Shanghai flight, ending with a safety landing. It shows the pilots' procedures through the emergency.

A one-minute visualization of a simulated ant colony in which ants follow pheromone trails, with the source code on GitHub. It shows emergent behavior arising from simple rules.

OpenAI's livestream demo of GPT-4 with Greg Brockman, showing its capabilities and limitations. Highlights include writing code, turning a hand-drawn sketch into a website, and a tax-question example.

A 35-minute demonstration of NeXTSTEP Release 3 by Steve Jobs. It shows the object-oriented development environment and features such as dragging a live chart between apps.

A Computer History Museum recording of the final demonstration of the Xerox Star, the early graphical user interface workstation. It is a long demo session that shows the design thinking behind desktop, icons and windows.

Footage of the US Navy's Phalanx CIWS, a radar-guided 20 mm Gatling gun, firing in live target practice. The Phalanx serves as terminal defense against anti-ship missiles.

SethBling shows MarI/O, a program using neural networks and the NEAT genetic algorithm to learn to play Super Mario World. The description links the source code, the paper and background reading.

Sebastian Lague explores an ant-inspired algorithm and simulates ant and slime mold behavior, using compute shaders. Source code for both simulations is available.

A 3-minute demo of a tiny IOCCC 2012 winning C program that simulates fluid dynamics in an 80x25 terminal, using any text (including its own source) as input. The video shows the simulation running to Handel's Water Music.

Neural-network upscaled, 60 fps, stabilized and colorized version of 1902 footage of the Wuppertal Schwebebahn suspended railway in Germany. The source film comes from MoMA. It gives a vivid view of an early-1900s city and a train system that still runs.

Juan Benet gives an overview and demo of the go-ipfs alpha. It shows the peer-to-peer content-addressed protocol in action, including streaming video from a home computer.

Steve Mould messes with an automated phone bot by telling it to forget its previous prompts and give him a bolognese recipe. It is a short demo of prompt injection against an AI voice agent.

Jeija demonstrates a modified Minetest game with a spherical planet, using a grid transform to make a voxel world round. It includes the orbit math and download links for the spheretest build.

A restored recording of Steve Jobs unveiling the original Macintosh in 1984, including the moment it is taken out of its bag and speaks. The upload comes from the team that rediscovered and restored the lost footage.

Hobbyist Wesley Kagan shows his Miata running and driving with a homemade version of Koenigsegg's freevalve camless valve technology. The build uses open CAD files and code and he describes it as an ongoing work in progress.

A short NASA Goddard visualization from the GEOS-5 model showing a year of atmospheric carbon dioxide moving around the globe. It shows plumes from sources, hemispheric differences and seasonal swings as plants grow and die back.

The Michigan TypeScript group shows the Doom engine running entirely inside the TypeScript type system. It is open source, and two follow-up videos cover why and how they did it.

BigClive tears down and tests a germicidal UVC lamp from eBay that floods a room with narrow-band ultraviolet and ozone. He warns of the eye and skin hazards.

Google engineer Dany Qumsiyeh presents a prototype automatic, non-destructive book scanner that turns pages and captures high-resolution images, built in Google's workshops. The talk includes a live demo and a short technical overview.

A hobbyist builds a prototype full-frame CCD camera from scratch, with open-source design files and a custom PCB. The video shows the first, still rough prototype.

A 256-byte MS-DOS intro that renders a raymarched, procedural 3D animation. It won the 256-byte competition at Riverwash 2009 and the scene.org award for best technical achievement that year, and the author published commented x86 assembly source.

Mark Rober sets up elaborate glitter-bomb traps to go after phone scammers, working his way up their chain of command, and ends with a scammer being arrested. He also points viewers to fraud-reporting resources and to scambaiter Jim Browning's investigation.

Corridor Crew explain how they made an anime short by filming themselves and running the footage through custom-trained Stable Diffusion models. The video walks through the technique and its open-source foundations.

The BotHack NetHack bot wins the game for the first time with no cheats or human intervention, in a run lasting about 3.5 hours. The description links the source code and the dumplog.

Matthias Wandel shows his wooden machine that adds binary numbers using marbles. It demonstrates computation with purely mechanical logic.

A demo of the Bad Apple music video played back at 60 FPS on an e-ink display, up from 2.4 FPS in an earlier attempt. It is part of the effort behind the open source Modos e-ink monitor.

Footage of the 1985 world premiere of the Amiga 1000 at Lincoln Center. It shows demos such as multitasking and the bouncing ball, and Andy Warhol painting Debbie Harry live on the machine.

A WiebeTech marketing demo of HotPlug, a device that moves a running computer onto battery or another power source so it can be transported without shutting down.

An art project by Simon Weckert in which 99 smartphones pulled in a handcart create a fake traffic jam on Google Maps. A green street shows as red, which diverts cars to other routes.

Physics Girl shows a vortex phenomenon (a falaco soliton) that can be reproduced in a pool on a sunny day. Two vortices are created with plates and made visible with food coloring.

A 1982 Xerox PARC film, presented at CHI '90, in which Star designers David Canfield Smith and Charles Irby give an overview of the Xerox Star interface. It shows the document-centric, icon-and-window office system.