An experimental version of LibreOffice compiled to WebAssembly (nicknamed LOWA) has appeared. Be warned, it's about 300MB, so it takes a while to load, but you can try it here in your browser.
It's based on the still-prototype LibreOffice 7.4 codebase and is not yet ready for production use. Given that LibreOffice is a large codebase, parts of which are decades old, this is a significant vindication of WebAssembly.
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Experimental WebAssembly port of LibreOffice released#
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cloud Try it in your browser