Free... for how long?
Trello is free forever. We may add pay-only features in the future, but everything that's free today will be free tomorrow and forever. Also, we'll not make a for-pay feature that forces you to compromise on privacy, security, or portability. Those are built-in. The maker of Trello, Fog Creek Software, has been profitable for years on the strength of its other products. We can afford to foot the bill. We have no outside investors pushing us to make a quick buck on Trello by selling out our users or getting you hooked before jacking up the price. Trello is free.