aspose-alternative

MIT-licensed, COM-free .NET libraries for creating, reading, editing, converting, rendering, and extracting Office, PDF, email, OneNote, and text formats.

Android Excel library for Kotlin — read/write .xlsx files with a native API. Lightweight alternative to Aspose.Cells at $99/year.

A .NET library that fills template PDFs with text, images and barcodes — in process, MIT licensed, no per-document cost. A permissive alternative to Aspose.PDF and IronPDF for AcroForm template filling.