Jatinder Pal Singh

Version 2.2 Completely Re-Written. 
Tested with WordPress 4.1 and Buddypress 2.2.1. 
This plugin gives an option to buddypress based website owners to decide that where their users should be redirected after the login. Currently users can be redirected to 3 different locations after login. 
1. Personal Profile / Personal Activity Page 
2. Site wide Activity 
3. Friends’ Activity 
4. Custom URL
After Logout, Users will be redirected to Homepage. No Separate plugin required for this.

BP Login Redirect

Allows to decide buddypress website admins where their users should land after log in.

danielbolander

This WordPress Plugin fixes 404 Errors in Google Webmasters by Redirecting all 404 URLs to Home Page or a Custom URL.

Redirect 404 to Home Page – Custom URL

Great Plugin

This Wordpress Plugin fixes 404 Errors in Google Webmasters by Redirecting all 404 URLs to Home Page or a Custom URL.

BP Login Redirect vs Redirect 404 to Home Page – Custom URL