# Demo A rough example or otherwise incomplete version of a conceivable product or future system. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## GPT-6 Astra Is Both Incredible and Frustrating DevFeed: [GPT-6 Astra Is Both Incredible and Frustrating]() Original publisher: [Read original article]() Author: Peter Yang Published: 2026-09-09T14:27:15Z Content type: opinion Language: en Sources: [Behind the Craft]() Topics: [gpt-6-astra](), [Artificial Intelligence](), [OpenAI](), [computer-use](), [blender](), [Godot](), [Demo](), [Tutorial](), [3D]() Tags: [3d](), [ai](), [blender](), [computer-use](), [game](), [games](), [gpt-6-astra](), [openai](), [tutorial]() ### AI overview A hands-on opinion piece about OpenAI's GPT-6 Astra, describing strengths in games, 3D model creation, strategic thinking, and computer use, while noting problems that prevent it from becoming the author's daily driver. The article also outlines a workflow using Blender, Godot, and ChatGPT to build games. ### Source excerpt What OpenAI's new model does well, where it falls short, and how I'm using it. ## How to run an internal-tools demo night: WorkOS field notes DevFeed: [How to run an internal-tools demo night: WorkOS field notes]() Original publisher: [Read original article]() Author: WorkOS Published: 2026-08-28T12:52:51Z Content type: tutorial Language: en Sources: [WorkOS Blog]() Topics: [Low-Code / Internal Tools](), [Demo](), [Tooling]() Tags: [2026](), [demo](), [how-to](), [internal-tools](), [talks]() ### AI overview WorkOS shares field notes from running two internal-tools showcases. The playbook covers a sequenced lineup of five short talks, live demonstrations, a single panel Q&A, audience mingling, and contingency planning for presenter and demo failures. ### Source excerpt Field notes from running the WorkOS internal-tools showcase twice: five talks, live demos only, one Q&A, a sequenced lineup, and a contingency for every demo. ## Agent Night demo recap: Brian Douglas's self-healing Pokémon agent DevFeed: [Agent Night demo recap: Brian Douglas's self-healing Pokémon agent]() Original publisher: [Read original article]() Author: WorkOS Published: 2026-08-17T18:34:12Z Content type: news Language: en Sources: [WorkOS Blog]() Topics: [Demo](), [observability ai agents](), [telemetry](), [Claude Code](), [Python](), [DuckDB](), [Kafka](), [Code](), [Open Source]() Tags: [agent](), [claude-code](), [code](), [coding](), [demo](), [duckdb](), [kafka](), [open-source](), [python](), [self-healing](), [telemetry](), [traces]() ### AI overview A recap of Brian Douglas's Agent Night demo shows how Paper Compute ran Pokémon as a self-healing agent for six months. The setup uses Claude Code, a headless Python emulator, and traces from each session and turn. The article explains how labeled traces and per-session reflections can make the agent's history searchable and useful for improvement. ### Source excerpt Brian Douglas of Paper Compute closed Agent Night with six months of running Pokémon as a self-healing agent: traces, anomalies, dreams, and inceptions. ## What 21 five-minute demos looked like at WorkOS Demo Night DevFeed: [What 21 five-minute demos looked like at WorkOS Demo Night]() Original publisher: [Read original article]() Author: WorkOS Published: 2026-08-07T00:00:00Z Content type: article Language: en Sources: [WorkOS Blog]() Topics: [Demo](), [Agent Harness](), [Artificial Intelligence]() Tags: [agent](), [agent-harness](), [demo](), [mac](), [mac-os](), [recap]() ### AI overview A recap of WorkOS Demo Night in San Francisco, featuring 21 live five-minute demos. The article highlights Carbon Code, an agent harness running on emulated Mac OS 9 that edited its own source and added an effort selector during the event. ### Source excerpt A recap of the August 5 Demo Night at our San Francisco office: 21 live five-minute demos, no slides, no pitches, and an agent harness running on Mac OS 9. ## OpenTelemetry Demo 3.0 introduces breaking changes to attributes, dashboards, and local deployment DevFeed: [OpenTelemetry Demo 3.0 introduces breaking changes to attributes, dashboards, and local deployment]() Original publisher: [Read original article]() Author: OpenTelemetry Authors; Docs CC BY Published: 2026-07-28T10:15:19Z Content type: opinion Language: en Sources: [Blog on OpenTelemetry]() Topics: [Demo](), [OpenTelemetry](), [Maintainability](), [dashboards](), [Kafka]() Tags: [changes](), [dashboards](), [demo](), [maintainability](), [opentelemetry](), [services]() ### AI overview This article explains intentional breaking changes in OpenTelemetry Demo 3.0, including renamed custom telemetry attributes, broken dashboards and queries, and a revised local-run configuration split across multiple files. The changes aim to improve maintainability and make forks easier to manage. ### Source excerpt If you've been running the Demo for some time, you may have seen a couple of structural changes lately, and you may even have gotten mad about things not working as expected. We feel your pain and we totally understand it. Unfortunately there was no better way to change things without breaking the existing flow. Some of what you knew is gone. New services were added. Attribute names have changed. If you had dashboards with custom metrics, everything is broken now. ## Journées du Logiciel Libre (JDLL) DevFeed: [Journées du Logiciel Libre (JDLL)]() Original publisher: [Read original article]() Published: 2026-05-29T01:00:00Z Content type: news Language: en Sources: [Haiku Project]() Topics: [free software](), [Development](), [Demo](), [3D]() Tags: [3d](), [developers](), [event](), [free-software](), [printing](), [speaking]() ### AI overview The 2026 Journées du Logiciel Libre (JDLL) is a French-speaking free software event in Lyon, France, held May 30-31, 2026. Haiku will have a booth, and mmu_man and PulkoMandy will present a talk about recent Haiku development. ### Source excerpt Free software booths, and a lot of talks for both the general public and developers. Also games for kids, and 3D printing and other demos by the local fablab. French speaking event. Event Dates: 2026-05-30 - 2026-05-31 Event Homepage: https://www.jdll.org/ Activities: Haiku booth. A talk by mmu_man & PulkoMandy about "What's new in Haiku?" (news from the last year in Haiku development). Location ENS site Descartes, 19 allée de Fontenay, 69007 Lyon France Event report: TODO ## Test Database Resilience with the CockroachDB Fault Tolerance Demo DevFeed: [Test Database Resilience with the CockroachDB Fault Tolerance Demo]() Original publisher: [Read original article]() Author: David Bressler,Ayushi Jain Published: 2026-04-08T00:00:00Z Content type: tutorial Language: en Sources: [Cockroach Labs]() Topics: [CockroachDB](), [Resilience](), [Availability](), [Demo](), [distributed-systems](), [consistency](), [Cloud]() Tags: [availability](), [cloud](), [cockroachdb](), [consistency](), [demo](), [failover](), [how-to](), [production](), [resilience](), [verify]() ### AI overview This article explains how to use CockroachDB's Fault Tolerance Demo to trigger a real availability zone failure and observe availability, performance, consistency, failover, and replica rebalancing. The Public Preview demo is available to CockroachDB Cloud Advanced customers through the Cloud Console and should be run on a dedicated test or staging cluster. ### Source excerpt The CockroachDB database fault tolerance demo lets you trigger a real availability zone (AZ) failure within your cluster. ## Evil Trout + DEG DevFeed: [Evil Trout + DEG]() Original publisher: [Read original article]() Published: 2026-03-31T00:00:00Z Content type: article Language: en Sources: [Robin Ward]() Topics: [Demo]() Tags: [2026](), [deal](), [demo](), [developers](), [games](), [puzzles](), [steam]() ### AI overview Evil Trout founder Robin Ward describes investing in Doseo's puzzle game DEG after playing its demo during Steam Next Fest. The funding will support the game's improvement and marketing; a full release is planned for later in 2026. ### Source excerpt During the last Steam Next Fest, I played a demo of a puzzle game called DEG that was getting a lot of buzz. The game is made for people who like grid puzzles like Sudoku, or Nurikabe, with many additional unique concepts and puzzle ideas that are tutorialized silently to the player. Needless to say, I was hooked. I reached out to Doseo, its creator, and inquired about investing in the game. We discussed how he would use additional money to improve and market the game, and a deal was struck. ## How to Make Software Demos More Effective by Focusing on User Stories DevFeed: [How to Make Software Demos More Effective by Focusing on User Stories]() Original publisher: [Read original article]() Author: Matt McKenna Published: 2026-03-23T13:00:00Z Content type: tutorial Language: en Sources: [Matt McKenna]() Topics: [Demo]() Tags: [demo](), [engineering](), [how-to](), [mobile-development](), [technical]() ### AI overview This article presents a framework for making software demos more effective by explaining why a feature matters, grounding it in a user story, showing a clear happy path, highlighting the moment of value, and closing with the outcome. ### Source excerpt Intro This year at Square we started shipping aggressively. Powered by a completed migration, new feature roadmaps, and AI adoption, we shifted into a build, demo, iterate, ship cycle. My team was sho ## Engineering Den: implementing a new query manager (demo) DevFeed: [Engineering Den: implementing a new query manager (demo)]() Original publisher: [Read original article]() Author: Grzegorz Dudek Published: 2026-01-27T00:00:00Z Content type: article Language: en Sources: [Redpanda]() Topics: [Demo](), [Query (disambiguation)](), [SQL](), [Streaming](), [Testing](), [debug]() Tags: [debug](), [demo](), [engineering](), [sql](), [streaming]() ### AI overview This Engineering Den article presents a demo of Redpanda's refactored query manager. It explains how a deterministic state machine improves query lifecycle management, scheduling, cancellation, restart behavior, cluster stability, logging, and debuggability at scale. ### Source excerpt Clear state, predictable behavior, fewer surprises. That's what happened after we refactored our scheduler. Here's what we did and a demo comparing the old with the new. ## A look back at 2025 demo development at ClickHouse DevFeed: [A look back at 2025 demo development at ClickHouse]() Original publisher: [Read original article]() Author: Lionel Palacin Published: 2025-12-30T00:00:00Z Content type: article Language: en Sources: [ClickHouse Blog]() Topics: [clickhouse](), [Demo](), [Development](), [real-time](), [benchmarking](), [dashboards](), [WebSocket](), [data](), [Go Language]() Tags: [2025](), [analytics](), [apis](), [applications](), [benchmarking](), [benchmarks](), [clickhouse](), [data](), [demo](), [development](), [engineering](), [examples](), [go](), [real-time](), [speed](), [ui](), [websocket]() ### AI overview The article reviews notable ClickHouse demos developed in 2025, emphasizing how hands-on applications make database performance tangible. It describes StockHouse, a real-time market analytics application that streams stock and crypto data through WebSocket APIs, ingests it into ClickHouse, and updates a dashboard within milliseconds. ### Source excerpt Have a look at some of the most notable demos we built this year, and how they help people feel the speed of ClickHouse through real, hands-on examples. ## A series of tricks and techniques I learned doing tiny GLSL demos DevFeed: [A series of tricks and techniques I learned doing tiny GLSL demos]() Original publisher: [Read original article]() Published: 2025-12-07T17:48:26Z Content type: tutorial Language: en Sources: [The Last Static Blog RSS]() Topics: [glsl](), [Demo](), [Code](), [iteration](), [color]() Tags: [code](), [demo](), [fun](), [glsl](), [graphics](), [iteration](), [math](), [prog](), [techniques](), [tricks]() ### AI overview This tutorial examines four tiny GLSL demos--Moonlight, Entrance 3, Archipelago, and Cutie--and explains selected techniques learned while creating them. It introduces an alternative raymarching approach using inverse-density color contributions and relates it to photon-density integration. ### Source excerpt In the past two months or so, I spent some time making tiny GLSL demos. I wrote an article about the first one, Red Alp. There, I went into details about the whole process, so I recommend to check it out first if you're not familiar with the field. We will look at 4 demos: Moonlight, Entrance 3, Archipelago, and Cutie. But this time, for each demo, we're going to cover one or two things I learned from it. It won't be a deep dive into every aspect because it would be extremely redundant. Instead, I'll take you along a journey of learning experiences. Moonlight Moonlight demo in 460 characters // Moonlight [460] by bµg // License: CC BY-NC-SA 4.0 void main(){vec3 o,p,u=vec3((P+P-R)/R.y,1),Q;Q++;for(float d,a,m,i,t;i++<1e2;p=t<7.2?Q:vec3(2,1,0),d=abs(d)*.15+.1,o+=p/m+(t>9.?d=9.,Q:p/d),t+=min(m,d))for(p=normalize(u)*t,p.z-=5e1,m=max(length(p)-1e1,.01),p.z+=T,d=5.-length(p.xy*=mat2(cos(t*.2+vec4(0,33,11,0)))),a=.01;a<1.;a+=a)p.xz*=mat2(8,6,-6,8)*.1,d-=abs(dot(sin(p/a*.6-T*.3),p-p+a)),m+=abs(dot(sin(p/a/5.),p-p+a/5.));o/=4e2;O=vec4(tanh(mix(vec3(-35,-15,8),vec3(118,95,60),o-o*length(u.xy*.5))*.01),1);} Note See it on its official page, or play with the code on its Shadertoy portage. In Red Alp, I used volumetric raymarching to go through the clouds and fog, and it took quite a significant part of the code to make the absorption and emission convincing. But there is an alternative technique that is surprisingly simpler. In the raymarching loop, the color contribution at each iteration becomes 1/d or c/d where d is the density of the material at the current ray position, and c an optional color tint if you don't want to work in grayscale level. Some variants exist, for example 1/d^2, but we'll focus on 1/d. 1/d explanation Let's see how it looks in practice with a simple cube raymarch where we use this peculiar contribution: One glowing and rotating cube void main() { float d, t; vec3 o, p, u = normalize(vec3(P+P-R,R.y)); // screen to world coordinate for (int i = 0; i < 30 ## Meet the Builders: Highlights from the MCP Server Builder Meetup DevFeed: [Meet the Builders: Highlights from the MCP Server Builder Meetup]() Original publisher: [Read original article]() Author: Amanda Martin Published: 2025-07-08T10:55:00Z Content type: article Language: en Sources: [Apollo Blog]() Topics: [MCP Server](), [Model Context Protocol](), [Demo](), [Large Language Model](), [Artificial Intelligence](), [client]() Tags: [agent](), [agents](), [announcement](), [architecture](), [community](), [developer](), [developers](), [events](), [llms](), [mcp](), [mcp-server](), [meetup](), [model-context-protocol](), [tool](), [tools](), [workflows]() ### AI overview Apollo's recap of its first MCP Server Builder Meetup highlights demonstrations of building, testing, and composing MCP servers and agent workflows. The sessions covered Goose, Square's layered MCP server approach, and Langflow's visual MCP client and server capabilities. ### Source excerpt On June 18th, we hosted our very first MCP Server Builder Meetup in San Francisco, bringing together engineers, tinkerers, and early adopters to explore the future of building AI-native developer experiences with Model Context Protocol (MCP). This was more than just a showcase of cool demos. It marked the launch of a new community of developers building for and with LLMs using MCP servers. The energy in the room made one thing clear: this community is ready to build what's next. ## Verlet cloth DevFeed: [Verlet cloth]() Original publisher: [Read original article]() Author: James Long Published: 2025-04-11T12:00:00Z Content type: article Language: en Sources: [James Long]() Topics: [Demo](), [Code](), [Canvas]() Tags: [canvas](), [code](), [demo](), [experiment](), [script]() ### AI overview An interactive Verlet cloth demo lets users drag the cloth with the left mouse button, tear it with the right button, and adjust its size. The demo was written with a fork of LLJS that compiles to asm.js, and its code is available. ### Source excerpt body { background-color: black; } #demo-mount { margin-top: 50px; } .sizer { position: absolute; bottom: 60px; width: 500px; left: calc(50% - 250px); text-align: center; color: white; background-color: #303040; padding: 20px; border-radius: 6px; } .sizer input { width: 100%; margin-bottom: 20px; } .sizer .output { font-size: 3em; line-height: 1em; } .info { position: fixed; bottom: 0; right: 0; display: block; margin: 1.5em; } .info.closed { display: none; } .info span { display: block; text-align: right; font-size: .75em; } div.info { color: white; width: 250px; background-color: rgba(255, 255, 255, .2); padding: 1em; } a.info { color: #004854; background-color: white; border-radius: 50%; width: 25px; height: 25px; text-align: center; padding-top: 12px; line-height: 0; opacity: .4; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; } a.info:hover { opacity: 1; cursor: pointer; } ^96c620
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Drag the cloth around with the left mouse button, and tear it with the right button.

This was written with my fork of LLJS that compiles to asm.js. Get the code, and see more demos at my site. - James Long