BoldSign is an API-first e-signature platform from US software company Syncfusion, offering 5 free documents per month and SDKs for 6 languages to help developers and businesses embed signing and enable bulk signing.
Dropbox Paper is the real-time collaborative document tool from Dropbox, launched in 2015, offering rich media embedding, task assignment, and version history, usable from the free Basic tier ($0) for lightweight document collaboration and knowledge capture.
SignWell (formerly Docsketch) is a Canada-based lightweight e-signature platform with a free plan of 3 documents per month, Pro from about $25/month, offering templates, bulk sending, API, and audit trails for SMBs and individuals.