There are several options for free electronic signature solutions available online. Some popular ones include:

1. DocuSign: DocuSign offers a free plan with limited features, allowing you to sign a certain number of documents per month. It’s widely used and offers secure electronic signatures.
2. HelloSign: HelloSign also provides a free plan with a limited number of signatures per month. It’s user-friendly and integrates well with other platforms like Google Drive, Dropbox, and Salesforce.
3. SignRequest: SignRequest offers a forever-free plan with basic features such as unlimited documents, three templates, and email support.
4. Adobe Sign: Formerly known as Adobe EchoSign, Adobe Sign offers a free trial period during which you can access its features. After the trial, you can continue with a paid plan or use the limited free version.
5. Smallpdf: Smallpdf is known primarily for its PDF tools, but it also offers a free electronic signature tool. It’s simple to use and allows you to sign and send documents easily.
6. DeedSign: DeedSign provides a free plan with limited features, including a set number of documents per month. It’s available on various platforms and devices.

These options vary in terms of features, document limits, and integrations, so you may want to explore each one to see which best fits your needs. Additionally, keep in mind that while these plans are free, they often come with limitations compared to their paid counterparts.