Instant 2FA vs Security Monkey: What are the differences?

Instant 2FA: Add two-factor auth to any site in minutes. Add a powerful, simple and flexible 2FA verification view to your login flow, without making any DB changes and just 3 API calls; Security Monkey: Monitors AWS and GCP accounts for policy changes. Security Monkey monitors your AWS and GCP accounts for policy changes and alerts on insecure configurations. Support is available for OpenStack public and private clouds. Security Monkey can also watch and monitor your GitHub organizations, teams, and repositories.

Instant 2FA and Security Monkey can be categorized as "Security" tools.

Security Monkey is an open source tool with 3.67K GitHub stars and 695 GitHub forks. Here's a link to Security Monkey's open source repository on GitHub.