Trello for Slack - Organize anything with anyone, inside Slack
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
ProntoForms - ProntoForms is a mobile business solutions application, converting paper forms onto any tablet or mobile device.
Halp - Slack-first ticketing for internal helpdesk
Nintex - Cloud-based digital workflow management automation platform