Alessandro Pignotti Archives - Leaning Technologies

Alessandro Pignotti

Mini.WebVM: Your own Linux box from Dockerfile, virtualized in the browser via WebAssembly

May 22, 2023

CheerpX, Technical Blog, WebAssembly, WebVM

TL;DR – WebVM is a Linux-like virtual machine running fully client-side in the browser. It is based on CheerpX: a x86 execution engine in WebAssembly by Leaning Technologies. With today’s…

Announcing CheerpJ 3.0: a JVM replacement in HTML5 and WebAssembly to run Java applications (and applets) on modern browsers

May 9, 2023

CheerpJ, Technical Blog

TLDR: for the past year, we have been working on a new architecture for CheerpJ: our implementation of the JVM in HTML5/WebAssembly, designed to run Java applications on the browser.…

Unexpectedly Useful: A Real World Use Case For WebAssembly System Interface (WASI)

April 6, 2023

Cheerp, Technical Blog, WebAssembly

At Leaning Technology we are heavily invested in WebAssembly, and we are actively contributing to push the standard forward. Just a few months ago WebAssembly tail-calls were standardised thanks to…

Cheerp 3.0: The most advanced C++ compiler for the Web, now permissively licensed

March 14, 2023

Cheerp, Technical Blog

Today we are very proud to announce Cheerp 3.0, the latest major release of our C++ compiler for the Web. More than a year has passed since the previous release…

WebVM: server-less x86 virtual machines in the browser

February 1, 2022

Technical Blog, WebVM

TL;DR — We made a server-less virtual Linux environment that runs unmodified Debian binaries in the browser. This is powered by CheerpX, a WebAssembly virtualization platform. Feel free to play…

The Bottomless Pit of Disappointment: A Chrome Extension Tale

August 10, 2021

CheerpJ, Company News, Technical Blog

A bit of a “learn from our pain” / rant / sharing our experience-type blogpost, but here goes. At Leaning Technologies, we make compilers and VMs that target JavaScript and WebAssembly.…

Extreme WebAssembly 2: the sad state of WebAssembly tail calls

August 18, 2020

Technical Blog

Here at Leaning Technologies, we use WebAssembly daily to create unique and seemingly impossible technologies, like CheerpX (a WebAssembly virtual machine designed to safely run arbitrary x86 libraries and applications in browser)…

Extreme WebAssembly 1: pushing browsers to their absolute limits

June 16, 2020

Technical Blog, WebVM

Python3 running client side using CheerpX. File access and blocking primitives (i.e. sleep) are demonstrated. WebAssembly is one of the hottest topics in software development right now, particularly in the…