ESS can replace many of the features of these applications so integration may not be required. However if you need an advanced level of integration, please send an email to firstname.lastname@example.org for details.
Yes, ESS was designed to allow you to customize it to your needs. ESS is highly flexible and should be able to easily replicate your existing manual processes. If you require a more advanced type of development, please send an email to email@example.com .