About Active Collab

Manage projects, track time, and bill your clients with one easy‑to‑use collaboration tool.

Our Story

We are A51, the company behind Active Collab. We're privately owned, 30 people strong, and have 8 years of experience in project management software. As simple as that.

Active Collab began as a successful open-source project, which later grew to be a very successful commercial product. All we care about is developing exceptional software and making Active Collab the best project management tool in the world.