There are 5 repositories under document-signing topic.
The Open Source DocuSign Alternative.
Open source DocuSign alternative. Create, fill, and sign digital documents ✍️
WeasySign is a small simple to use high level library for digitally signing pdf's generated with the WeasyPrint PDF library.
✍️ Sign documents without stress
Open Source PDF Editor
Open Source Vue PDF Editor
Applications for IAGREEK
DocuSeal PHP API client