Wag! - The most trusted local dog walking service, whenever you need it!
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Rover - Find a loving dog sitter near you. Book trusted sitters and dog walkers who'll treat your pets like family.
TidyHQ - Organization management tool to support membership, subscriptions, event planning, and outreach.
TrustedHousesitters - Helping pet lovers travel
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.