BoldSign provides an electronic signature platform for sending, signing, and managing contracts and documents online, with legally binding eSignatures, templates, bulk send, identity verification, and document management. It offers an eSignature API and SDKs (cURL, C#, Java, PHP, Python, Node) so developers can embed signing workflows into their own applications, plus integrations such as Salesforce, HubSpot, Zapier, and Xero. It targets teams and businesses of all sizes, from startups to enterprises, with a 30-day free trial and plans starting at $15/month.