Note on 24th September 2026
Simon Willison’s Weblog 2 weeks ago 50 ● 2 sources
A writer argues that coding agents make software engineering harder despite their ability to do impressive work.
Developer Tools
1272 summarised stories about Developer Tools, each linking back to the original source. Browse all topics →
Key players
Thursday, 24 September 2026
Rinkata
Product Hunt 2 weeks ago 7
Rinkata launched a product to connect product intent from idea to deploy for teams and AI coding agents. It runs today and lets agents like Claude, Codex, Cursor, ChatGPT, Gemini, and Grok read and write via MCP. It changes how AI agents get requirements and how finished work is documented by automatically collecting completion evidence such as tests and PRs back into a shared hub.
Token Forecaster
Product Hunt 2 weeks ago 20
Token Forecaster launches as an open-source tool that estimates an LLM reply length and flags if it is running long while the response streams. It reports a worst-case bound that held for 90.6% of 4,146 unseen calls. It adds length prediction and streaming-time status to LLM replies by learning from local history without changing the request.
commit-rewriter 0.2
Simon Willison’s Weblog 2 weeks ago 49
Commit-rewriter version 0.2 was posted in a monthly briefing by Simon Willison. The post date was 24th September 2026. The only stated change is that version 0.2 of commit-rewriter is now available, with no technical details provided in the text shown.
Wand
Product Hunt 2 weeks ago 24
Wand was launched as an AI dictation app meant to help builders turn spoken thoughts into software without stopping to write prompts. It’s shown with “40 followers.” The shift is from typing prompts to dictating/rambling in real time as Wand keeps up and outputs software.
Jango
Product Hunt 2 weeks ago 17
Jango launched a software testing service that creates AI user accounts in separate browsers to sign in to a dev URL and interact with each other in real time. It is available on Mac. It now lets teams watch sessions live and then receive a report with actions, errors, and screenshots.
Speaker-labeled transcription with WhisperX on SageMaker AI
Amazon Web Services 3 weeks ago 22 ● 2 sources
AWS published a guide for deploying the WhisperX speech-to-text deep learning container on Amazon SageMaker AI to produce transcripts with word-level timestamps and speaker labels. The real-time endpoint must return within a 60-second response cap, while long audio should use the asynchronous endpoint. This changes transcription outputs and deployment workflow by adding per-word alignment and diarization labels and by routing requests through either synchronous or S3-backed async inference on SageMaker.
Once UI 2.0
Product Hunt 3 weeks ago 39
Once UI launched Once UI 2.0 as an open-source design system for building consistent React apps for developers and AI agents. Version 2.0 is the 8th launch from Once UI. The update adds a component catalog, compact rules, and task guides so AI agents follow the system correctly and outputs become easier for developers to read.
Ace from Automat Workforce
Product Hunt 3 weeks ago 34
Automat Workforce launched Ace, an AI coworker product positioned as a work-focused version of Instinct or Muse. It includes a 14-day free trial for users to try the service. Ace changes hiring by providing an AI worker with its own accounts and the ability to return finished work inside existing tools rather than only status updates.
Google’s Gemini CLI now asks before editing your build files
The New Stack 3 weeks ago 43
Google’s Gemini CLI 0.61.0 now requires explicit confirmation before an agent edits build configuration files, runs build or test commands after those edits, or executes shell commands with arguments that match untrusted external content. The release was made on Wednesday and the related changes merged on September 11. This adds human-in-the-loop approval prompts and strengthens the sandbox so host credentials and settings are not exposed to the code running inside it.
Dataiku debuts cross-platform Agent Management, expands Cobuild building agent
SiliconANGLE 3 weeks ago 19 ● 2 sources
Dataiku launched standalone cross-platform Agent Management and expanded its Cobuild natural-language agent for building governed AI projects. Agent Management will be generally available in October with an annual per-instance fee, while agents can be inventoried via connectors to platforms including Salesforce, AWS, Microsoft, and Google. As a result, companies can consolidate and track agents across vendor stacks and use Cobuild to ask plain-language questions, build pipelines, and connect agent risk monitoring with governed project workflows.
Cursor acquired Firetiger. A month later, it launched a bot that tracks code changes from PR to production.
The New Stack 3 weeks ago 22
Cursor acquired Firetiger and, a month later, launched the Rollouts agent to track pull-request changes through production using defined monitoring plans. Rollouts classifies each deployment into three verdicts. Developers get telemetry-based regression detection with alerts and optional revert pull requests or handoff to a Cursor cloud agent instead of manual post-deploy checking.
Decktly
Product Hunt 3 weeks ago 41
Decktly was launched as an HTML editor that lets people open AI-generated slide decks, edit text and layouts, and add charts, tables, and comments. It’s available for Windows, Mac, and in a browser. Work is saved as HTML after edits.
FLYBOX
Product Hunt 3 weeks ago 52
FlyBox is an open-source interactive sandbox for experimenting with a simulated fruit-fly connectome and observing neural activity and behavior as inputs change. It uses 166,700 neurons and about 25.6M synapses. The launch adds a tool where users can stimulate or silence neural populations, lesion connections, and run real-time comparisons and inspections of the simulated fly’s brain activity.
Modal Labs in talks to raise at $15B, tripling its valuation in four months: Report
Tech Funding News 3 weeks ago 43 ● 3 sources
Modal Labs is in negotiations to raise new funding at a $15 billion valuation, which would lift its value from $4.65 billion four months earlier. The new round could nearly triple the valuation in four months, following a May $355 million raise at the same $4.65 billion level. Investors are focusing more on AI inference and infrastructure efficiency, pushing Modal to scale its GPU-sharing and coding sandbox offerings as demand concentrates on inference compute.
Building Tools for AI Agents
Arize AI 3 weeks ago 39
Daytona CEO Ivan Burazin says AI agents he uses have trouble with tool access and with acting under his identity without crossing permission boundaries.
Agentic Coding: Bet on the Primitives
Robin Wieruch 3 weeks ago 30
The author compared D3-based chart components to Recharts for three custom charts and found the primitive approach matched the design system more completely while Recharts required custom SVG plus React animation workarounds. The Recharts implementation reached about 80% of the target behavior before additional custom tooltip, label, and animation code was still needed. The takeaway shifts teams toward owning thin layers built on primitives when agentic workflows reduce implementation labor, moving the “crossover” point away from high-level libraries for non-happy-path requirements.
Why WebSockets Beat SSE for AI Streaming at Scale
Ably Realtime 3 weeks ago 37
AI streaming workflows that need client-to-server signals (cancel, approval, steering) hit a structural limit with SSE’s one-way design, so teams switch to WebSockets for full-duplex communication. WebSockets add about 2–6 bytes of overhead per frame versus SSE’s repeated HTTP headers, which becomes a measurable cost at high token rates. This shifts teams from SSE-only streaming to building or buying bidirectional infrastructure that can handle reconnection, fan-out, and delivery guarantees beyond the raw socket connection.
Rendering Huge Pull Requests in the GitHub Copilot App
The GitHub Blog 3 weeks ago 51
GitHub rebuilt the pull request diff view in the GitHub Copilot app to stay fast when displaying a very large diff with review threads. The biggest pull request they tested had 2,200 files, over 1,000,000 changed lines, and more than 400 inline review comments. The UI now uses separate geometry for deterministic code vs dynamically measured comment blocks, plus scroll-anchoring and a batched measurement scheduler so resizing and comment rendering adjust without major scroll jumps.
How We Made claude.ai 3x Faster in Two Weeks
claude.dev Blog 3 weeks ago 27
Claude.ai’s core website and desktop app experience was sped up by about 3x over a two-week sprint, after users reported it was slow. At the 75th percentile, time to reach a typeable page on a fresh claude.ai load dropped from 3.1 seconds to 0.55 seconds. The team used Claude Tag with lab benchmarks and CI guardrails, shipping thousands of performance changes with flags and then ratcheting benchmarks to keep improvements in production.
A Redistribution of Code Ownership
blog.scotterickson.info 3 weeks ago 40
The article describes a shift in cross-functional software development where non-engineers work more directly by prompting coding agents and submitting results via PRs instead of routing every change through engineers. The transition is framed against September 23, 2026. Collaboration changes from upfront specs and engineer-only edits to rougher requirements, faster small changes, and engineers focusing on sign-off, reliability, performance, and review.
Szept
Product Hunt 3 weeks ago 37
Szept was launched as a Mac app for dictating to AI agents and handing the results to Claude Code. It supports dictation in 60+ languages. Screen capture/recording and AI text cleanup are bundled in, with the source code included.
RemoteConsole
Product Hunt 3 weeks ago 47
RemoteConsole launched as a mobile SSH terminal that lets developers connect to their own Mac and Linux machines to control persistent tmux sessions running AI coding agents.
CoreSpeed
Product Hunt 3 weeks ago 22
CoreSpeed launched an MCP endpoint that lets agents access apps, memory, and tools by connecting accounts once. It went live today, including Smart Approval in beta to control agent activity. Users can route shared or private memory and multiple app accounts (like X) to Claude Code, Codex, Cursor, and other MCP agents, with planned additions like Agent Drive, Mail, Pay, and sandboxes.
JevForAgents
Product Hunt 3 weeks ago 25 ● 19 sources
JevForAgents launched a collection of Jev AI agent builds, demos, and implementation patterns for developers to browse and replicate. 360+ curated Jev AI agent builds are included. Developers can follow source-linked examples and apply the guides to browser automation, routing, tool selection, evaluation, and guardrails.
HireOtto
Product Hunt 3 weeks ago 18
HireOtto launched tools that connect Google Ads, LinkedIn Ads, Google Analytics 4, Google Tag Manager, and Search Console to an AI client you already use. Google Analytics is in beta. It lets you investigate cross-platform performance and make supported changes in Google Ads and LinkedIn Ads from one conversation via hosted MCP servers, without local setup.