Here's how you can download the ConnectBot app free for Android devices.
1. Go to the Google Play page for the free app ConnectBot.
2. Tap the Install button.
Here's a description of ConnectBot:
"ConnectBot is a powerful open-source Secure Shell (SSH) client. It can manage simultaneous SSH sessions, create secure tunnels, and copy/paste between other applications.
This client allows you to connect to Secure Shell servers that typically run on UNIX-based servers."