Developer Tools

Qt 6.12, released September 30 as a five-year Long-Term Support version, adds native QML hot reload, a production-ready CanvasPainter API and HarmonyOS as an LTS platform.

Cloudflare's Worker Previews, created with npx wrangler preview, give each Git branch an isolated environment with its own URL, configuration, state and observability.

Microsoft's open-source WSL containers feature reached general availability on September 29 with WSL 3.0.1, adding a Docker-style wslc.exe CLI, a Windows API, and enterprise controls.

Cloudflare released Forge, an Apache 2.0 pipeline that turns OpenAPI specs into SDKs, CLIs and docs, after Anthropic said it would wind down Stainless's hosted SDK generator.

Git 2.56.0 adds git add --resolved and git branch --delete-merged, plus a merge-base change that cut a Linux kernel lookup from 0.29 to 0.01 seconds.

Cursor released two automated bots that watch code from pull request to production and scan every PR for security flaws, six weeks after acquiring startup Firetiger.

Vercel Labs' experimental scriptc compiler turns ordinary TypeScript into small native binaries with no embedded Node or JavaScript engine, now at version 0.1.4 with more than 5,000 GitHub stars.

Safari 27.0 folds its Safari MCP developer server into a stable release, adds CSS-styleable select dropdowns, and rewrites the module loader in native C++.

GitHub added an opt-in, OS-level sandbox to the Copilot desktop app that limits agent file, network, and credential access, failing closed if unsupported.

Claude Opus 5.5 becomes Claude Code's default model and lands in GitHub Copilot the same day, at roughly 40% lower cost than Opus 5.

Visual Studio Code 1.139 extends Dev Container agent sessions to remote hosts and speeds up large agent session lists by up to 12x, Microsoft says.

Homebrew 7.0.0 adds a brew vulns scanner and advisory database, swaps Linux Bubblewrap sandboxing for Landlock, and patches a cask sandbox-escape flaw.