They are different

many existing products offer so many facilities, many of which are never used, that staff are put off using them

it often seems like you need a degree in use of the software to utilise them

facilities can be so complex it's a full time job just maintaining the data

many small and medium sized companies would rather have a clear, concise understanding of what is going on than have too much detail that takes forever to produce, or worse still have no idea because staff don't have time to do it

remote access can be slow, if possible at all

there is often no control over who can see or update the data and if there is any it is hard to set up.

anyone can use them with minimal training and minimal setup effort

all staff, from receptionist to MD, will feel confident using them

they avoid confusing people with loads of options that they don't need

they concentrate on the key information that  the recipient will have time to read

everything is easy to find with simple screen navigation

they are accessible from anywhere over the internet, with fast data access

you can access data if you are part of the team it relates to; you can update it if the Project Manager lets you

data entered into one tool is immediately available to all the others

they relate to the way projects run in the real world, rather than in theory!