Microterm runs Linux VM in any browser tab via WASM, RISCV64 emulation

Name: Microterm runs Linux VM in any browser tab via WASM, RISCV64 emulation
Availability: InStock
Author: Xlab

by Xlab·Feb 22, 2026·6 points·2 comments

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AI Analysis

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Real Linux VM in your phone browser—runs Codex, SSH, Kubernetes, offline compute.

Strengths

•Genuinely novel architecture: Ghostty + TinyEMU + RISC-V in WASM solves the 'Linux on mobile' constraint problem that previously required native apps.
•Works across desktop, tablet, iOS PWA—ecosystem coverage most competitors lack; actual persistent storage (40GB) and real networking (SSH, Tailscale, Nginx).
•Privacy win: local computation means zero telemetry, data stays on device; meaningful for sensitive workflows.

Weaknesses

•RISC-V64 container ecosystem is still small; most Docker/ARM payloads won't run without rebuilding.
•Performance on older phones likely painful; no public benchmarks or device compatibility matrix published yet.

Post Description

Microterm is a fully compliant Linux virtual machine that runs in any browser tab. It is designed for real development and operations workflows, not demo-only terminal output. You can use it on desktop, tablets, and phones, including iOS home-screen PWA installs.

Under the hood, Microterm combines Restty (libghostty + WebGPU) web terminal rendering and a TinyEMU-backed Alpine Linux guest on RISC-V64. The VM image is chunk-loaded in the browser and booted locally.

I successfully used it to run Codex directly without leaving an in-app preview inside X app or Telegram :) Can be used to SSH to any server, play with Kubernetes and Tailscale.

Let me know what you guys think!!