what is the difference between Data loader and Jitter bit data loader in salesforce?

Hi,

Pros of DataLoader

Extracting Salesforce attachments in original file format! I do not know of a tool that can do this better, or more efficiently! This is a huge benefit to companies that would like to extract attachments from Salesforce for tasks like data migrations.
Cross-object data extract within one file. You can pull data from related objects as long as there is a populated lookup from the object you are extracting, to another object (Child or Parent).
UI is simple and requires very little to no training. Given the acquisition of Mulesoft by Salesforce, I would not be surprised if DataLoader.IO is rolled out as the new global data loading tool for Salesforce.
Cons of DataLoader
Since Dataloader.IO is cloud-based, you will find that some objects require you to extract in batches of 100,000. Regardless of the number of fields, 2 or 50, you will need to batch into groups of 100,000 which requires you to use criteria such as data ranges, owners, etc.
You will need to conform to the date/time formatting within Dataloader.IO, which differs from Dataloader and other similar tools. This is a very minor inconvenience; however, you will need to know the different formats and when to use them.

Pros of jitterbit :

Data Transformation - updating multiple sources to use our data dictionary
Picking up files from our sftp site - removes manual intervention
Move data from one org to another through Salesforce

Cons of jitterbit :
It was difficult to figure out how to export file sources
We have to pay per integration site so that can be costly if we are using it for multiple sources
Some of the icons are difficult to determine their functionality

Thanks