Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

PracticePanther - PracticePanther offers CRM, invoicing, time tracking and communication solutions for law firms.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

Clio - Clio provides a full suite of web-based practice management tools targeted specifically at the administrative needs of sole practitioners and small firms.

Bylde - Bylde is a SaaS platform you can use to Start, Manage and Grow your groups and communities.

MyCase - Practice More, Manage Less.