Perseo is developed and supported under a free software model. But for this model to continue existing, it requires contributions from its users.
If you like Perseo and use it a lot, please consider giving a little something to support further development of Perseo.
If you cannot afford a donation, we would appreciate you leave a rated comment on the Chrome Web Store.
Perseo is a great extension, but it can be even better if you help us by suggesting the features you think it should have.
If you use Perseo and detect any bug, please report it and we will do our best to fix it as soon as possible.