If you organization already has a website then you can use Process Donations to accept online donations.  

For campaigns Process Donation lets your organization set up a master page for your campaign, then your supporters can also set up their own fundraising page to raise funds for the campaign. Process Donation also lets you manage your event, with it you can create a custom registration page and accept payments.

Process Donation offers several packages, including a free package. The free package lets a nonprofit run one campaign or event. The free package includes a custom donation page, social media campaigning and mobile fundraising.

The platform also provides reports so you can track the progress of the campaign. The platform also lets you send out receipts to your donors.

Process Donation works on PC, tablet and mobile devices. In addition to the free package, Process Donation has two other packages that provide additional services and unlimited campaigns, plus an insights dashboard. The other packages start at 19.99/mo.