PDF24

pdf24.org - converter (online/offline)

Multiple language support.
Give away (or sell) your own customized PDF creator.

Create PDFs (or, other file types: PDF/A, PDF/X, PS, EPS, PCL, PNG, JPEG, BMP, PCX, TIFF, PSD).

Install a PDF conversion widget:

Convert a file to PDF

Install a PDF URL conversion widget:

Convert a file to PDF

URL of a file

I Love PDF

I Love PDF - converter (in browser)

Merge, split, compress PDF
Convert PDF to/from Word, PowerPoint, Excel, and JPG
Watermark, rotate, and unlock PDFs

Click here to go directly to the features list.

Blink

Blink

Rendering engine for Chromium (Google Chrome browser) and Chromium OS (Google Chrome OS).
Open source community development.
Tons of resources available for interested browser and operating systems developers.

Sumatra PDF Reader for Windows

Sumatra PDF Reader for Windows

Reads these formats: PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader
Comes in 32-bit & 64-bit versions
Full install or portable
Works on these Windows Versions: XP, Vista, 7, 8, and 10

*I've had really good luck using Sumatra PDF Reader on PDFs that Adobe Reader cannot open.