Trello offers some file-picking capability, but that's about it: it doesn't really integrate with your Google Apps, and your files are stored in Trello-land (wherever that is). You cannot be sure that your organization's security and content management policies are being enforced uniformly.
Kerika meshes with Google. Sign up using your Google ID, and Kerika will store your files in your own Google account, where they can be managed using your security and content management policies. You can even create new Google documents from inside Kerika, and have your Kerika due dates show up with your Google Calendar.
The bottom line: If you are already using Google Apps, Kerika slides right in. You don't have to worry about managing your users, or where your files are being stored.
Trello doesn't have Scrum Boards or Whiteboards: everything must be handled as a Kanban board, even when it doesn't make sense. Agile teams that want to use Scrum are out of luck, and folks who needs to do creative work are totally ignored.
Kerika is flexible. Use Kanban boards or Scrum Boards, whatever works best for you. Change your mind if you need to; Kerika won't freak out. And when it's time for creative work, Kerika's patented Whiteboards let you collaborate in real-time with anyone, anywhere.
The bottom line: Kerika supports you the way you want to work. So everyone can be productive, no matter how different the teams are.
Trello is OK for small scale stuff, but can't handle real-life projects with hundreds of work items and dozens of team members. There's no easy way to stay on top of everything that's going on, everything that matters most.
Kerika scales smoothly from one to infinity. It doesn't matter whether your board is small or large; you never feel lost or out of control. Highlights help you manage large boards, and Views help you see at a glance everything that needs your attention, across dozens of ongoing projects. (Trello doesn't have anything like it.)
The bottom line: you can use Kerika for your personal task management, or to work in large teams. Kerika's Views & Highlights will make sure you are always on top of everything that matters. Kerika scales when you need your tools to do more. So all your teams can get more done.
No one else thinks global, the way we do. Our competitors assume that people are always located together, and that team collaboration is always real-time. They don't understand the rhythm of distributed teams, with everyone juggling multiple responsibilities with limited overlap in working hours.
Kerika was built for global teams; our own team has been global from Day One. We have a deep understanding how the collaboration challenge is different for global teams. We know how to avoid misunderstandings (like when does "today" end for a global team?) and how task management needs to work when everyone isn't in the same room at the same time.
The bottom line: Kerika makes sure everyone is always on the same page, no matter where they are located. So it doesn't matter if your team is crammed into one big room, or spread out over one big Earth.
Trello expects its users to do the heavy lifting, which is why you won't find useful templates, or a simple, clean user interface. (Instead you get a markdown syntax and JSON exports.) There isn't even an easy way to catch up on everything that happened while you were away, without getting overwhelmed by their Notifications firehose.
Kerika was designed for you. We want to enable everyone to use Kanban, Scrum and Whiteboards, without needing any special training or certifications. Not just the specialists, but regular folks – folks like you.
The bottom line: Kerika will be easier for everyone in your organization to adopt, regardless of their background, job function, or title. Kerika will actually get used every day, by everyone.