Any organization that needs to share private company data should look to enterprise-level products. Note that many free tools are not suitable for sensitive communications. Here is an array of apps and services that offer free screen-sharing capabilities, organized by the main focus of the tool (remote access, web conferencing, or screen sharing alone). Time limits on meetings, the number of participants allowed, and other restrictions on free versions have been lifted by some companies, at least temporarily. Fortunately, several of these apps and services have expanded their free offerings due to the current Covid-19 situation.