I. Scan to PDF (Free)
I would recommend Foxonic Express (Free Edition) - a handy image to PDF converter for FREE.
just 2 steps, u can convert scanned files to PDF with Foxonic Express:
http://www.caisdata.com/faq/how-to-convert-image-to-pdf.htm
u can learn more info about Foxonic Express from here:
http://www.caisdata.com/foxonicexpress.htm
II. Manage PDF
I would recommend Foxonic Professional, a multi-purpose PDF tool, just like a Swiss Army Knife for PDF file processing.
Foxonic Professional is an All-in-One PDF managing tools, such as, it contains: "PDF Protector", "PDF Merger", "PDF Splitter", "PDF Page Extractor", "PDF Page remover", "PDF Cropping Tool", "Multiple PDF Pages per Sheet Printing Tool", "PDF Rotator", "PDF Font Embedding Tool", "PDF Scale Up/Down Tool", "PDF Meta Data Modifier", "PDF DPI Changing Tool", "PDF Slide Show/Presentation Maker", "PDF Optimizer", "PDF Stamper", "PDF Permission Modifier", "PDF
Password Remover", "PDF Page Dimension Changing Tool", "JPEG to PDF Converter", "TIFF to PDF Converter".
*** An All-in-One PDF managing tool with affordable price.
u can learn more info about Foxonic Professional from here:
http://www.caisdata.com/foxonic.htm
III. Office to PDF
Recommend "SaveAsPDFandXPS.exe", an MS Office Add-in. u can get it for FREE from here:
http://www.microsoft.com/downloads/details.aspx?FamilyID=4d951911-3e7e-4ae6-b059-a2e79ed87041&displaylang=en
IV. Print to PDF
lots of Free PDF printer, such as, PrimoPDF, PDF Creator (needs ghostscript), just download and try, select one that best suit ur needs.
V. Read PDF (Free)
(1) for best compatibility with PDF files, try Adobe PDF Reader. get it from here: http://get.adobe.com/reader/
(2) for portability, less system resource usage, try Foxit Reader, a light PDF reader.
VI. Edit PDF
(1) for best compatibility and stability when editing PDF files, recommend Adobe Acrobat, although it's expensive.
(2) free alternative, recommend OpenOffice + PDF Import Plug-in