AlterPDF is described as 'set of free PDF tools, which allows you to convert, modify and sign your PDF documents. With this program you are able to convert PDF to images, as well as convert JPG and other pictures to PDF, extract text and images' and is an app in the office & productivity category. There are more than 25 alternatives to AlterPDF for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and Android. The best alternative is PDF-XChange Editor, which is free. Other great apps like AlterPDF are PDFsam, Adobe Acrobat DC, Master PDF Editor and PDFTK Builder.
AlterPDF is mainly a PDF Editor but alternatives to it may also be PDF Readers or Document Managers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of AlterPDF.
PDFTK Builder is a free graphical interface to for PDFtk, making it much easier to use. It is a easy to use tool to collate (merge), split, encrypt, decrypt, stamp and rotate (only 90°, 180° or 270°) pdf documents.
PDF Shaper makes it easy to tailor the content of PDF files. Users can split PDF files into smaller PDFs, extract or delete individual pages, and encrypt and decrypt files. It's just as simple to merge multiple PDF files into a larger file.