TL;DR — We built a WebAssembly based virtual machine to run X86 binaries in the browser. It’s called CheerpX. You can run any REPL environment with it. Example: https://repl.leaningtech.com/?python3 Historically, JavaScript has been the programming language of the Web. This changed with the introduction of WebAssembly, albeit in a fairly…

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. Our tooling is used both to extend the life of existing applications allowing them to run on modern browsers…

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) and CheerpJ (a solution to compile and run Java applications in the browser). CheerpX, in particular, is certainly…

WebAssembly is one of the hottest topics in software development right now, particularly in the web applications ecosystem. While its internals are still mysterious to many, here at Leaning Technologies we have been working with it daily for the last several years. …

October 19 Update: CheerpX for Flash is now generally available. You can read the announcement here. Note: We have recently announced CheerpX for Flash, a solution to extend the life of Flash applications post-2020. Find out more in this post Extending the life of Flex, AS3 and AS2 Flash content…

Or how we plan to run any Flash content in WebAssembly without re-implementing Flash — Note: We have recently announced CheerpX for Flash, a solution to extend the life of Flash applications post-2020. Find out more in this post For quite a long time, and until recently, Adobe Flash has been the tool of choice to create interactive web applications, especially video games. Since Flash…

Here at Leaning Technologies we specialise in compilers: tools that are useful for software developers and enterprises, but rarely end up in the hands of end-users. Interestingly though, we happen to have an exception to this rule: our CheerpJ Applet Runner. CheerpJ Applet Runner is a (free) Chrome extension which…