OpenSignature is described as 'open source project for the digital signature of documents. It works with all cards supported by OpenSC and focuses on adding support for cards from accredited Italian CAs' and is an app in the Office & Productivity category. There are more than 10 alternatives to OpenSignature for a variety of platforms, including Online / Web-based, Windows, iPad, iPhone and Mac. The best alternative is Adobe Acrobat DC. It's not free, so if you're looking for a free alternative, you could try DottedSign or PDF Reader. Other great apps like OpenSignature are Adobe Fill & Sign (Free), PDFill (Freemium), LightPDF (Freemium) and DocHub (Freemium).
Use DottedSign to complete your work, including NDAs, sales contracts, lease agreements, permission slips, financial agreements, and more. Just import your document, sign or request signatures, and send. Simplifying your work process is easy as one, two, three!
Adobe Fill & Sign lets you fill, sign, and send any form fast. You can even snap a picture of a paper form and fill it in on your phone or tablet. Then e-sign and send. No printing or faxing needed. HOW IT WORKS:
With PDFill you can create, fill, delete and submit PDF form fields; insert new formatted text, check, image, hyperlink, whiteout, highlight, drawing, comment and annotation anywhere in the document; save, print or email the filled and password-protected PDF; save and resume...
LightPDF is the best free online PDF tool that allows you to edit and convert PDF. Also, you can use it to convert other types of files to PDF. It is quite easy and safe to use. No watermark, no plugins and no limits to the time or size.
DocHub streamlines document signing, distribution and form completion. FEATURES: Online PDF Editor - Type, draw, manage pages, and more. Document Signing - Sign PDFs and get PDFs signed. Legally binding eSignatures made easy.
JSignPdf is a Java application which adds digital signatures to PDF documents. It can be used as a standalone application or as an Add-On in OpenOffice.org. The application uses the jsignpdf-itxt library for PDF manipulations (based on iText library in version 2.1.