TidyHQ - Organization management tool to support membership, subscriptions, event planning, and outreach.
Crowdin - Localize your product in a seamless way
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
POEditor - The translation and localization management platform that's easy to use *and* affordable!
Membee - Membee is web-based membership management software.
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.