A certain characteristic of legacy desktop apps, like Microsoft Office, Autodesk AutoCAD, Adobe Photoshop and so on, are that they have crappy proprietary file formats. In 2025, we barely have reliable, fully-supported open source libraries to read and write .DOCX, .XLSX, .PPTX,1 .DWG, .PSD and so on, even though related products keep making billions in revenue. Yes, Microsoft’s newer Office formats .DOCX, .XLSX, .PPTX are built on OOXML (Office Open XML), an ISO standard. But can all of th...
