trynix.dev Boots Any Nix Package Inside Your Browser Tab
trynix.dev runs an x86_64 Linux virtual machine entirely in the browser via WebAssembly, letting any Nix package from the last 13 years be booted directly from a URL.
What it is
A browser-based virtual machine built by Farid Zakaria using qemu-wasm to run a full x86_64 Linux environment client-side.
What it does
It boots any Nix package published in the last 13 years without local installation, with each package reachable at its own URL on trynix.dev, similar in spirit to the WASM FFmpeg tool covered earlier around Claude Fable's video compressor.
Why it matters
It turns trying an unfamiliar Nix package into a zero-install, click-a-link action, useful for demos, quick sanity checks, or letting a coding agent poke at a tool before you install it locally.
Claude Fable 5.1 Wrote an FFmpeg-in-WebAssembly Video Tool in One Prompt
Video compressor is a browser-based tool built by Claude Fable 5.1 that uses a WebAssembly build of FFmpeg to compress video entirely client-side.
Simon Willison Sent Claude to Stress-Test smolmachines' Security Claims
smolmachines and its smolvm sandbox are a fast, security-focused environment for running untrusted Python and JavaScript, evaluated by Simon Willison for RAM and CPU-time limits against infinite-loop abuse.
Claude Code 2.1.221 Masks Your Credentials Instead of Just Denying Them
Claude Code 2.1.221 adds a sandbox credential-masking mode that shows sandboxed commands a sentinel copy of a secrets file while a proxy swaps in the real value on egress, plus a VSCode Focus view that collapses tool activity.