I believe you are referring to X1 Search - Find Any Document or Email in Under a Second ( mostly legal discovery use case) and related products. There are many desktop utilities and browser extensions which help you locate data from your email, drives, servers etc.
ours is cloud based solution which is a superior solution on multiple account
A) Your data is backed up, refreshed and accessible in your iPad and mobile and this is not possible in desktop/browser utilities . The utilities being desktop you have a whole back up to do. Backups also happen in different ways for example chat back up is a different discrete process than back up of you drive etc.
B) We have integrated your chats ( WhatsApp etc), forums like reddit, your Evernote, and subscriptions like Business standards and blogs like Valuepickr, Exchange and Sebi data, RSS feeds and host of other data source and more integrations will keep coming. Desktop utilities don’t allow you that rich data integrations and variety and hence usefulness is limited
C) We allow clipping, conversion of data, sentiment analysis, summarization, OCR and deep search within document an extraction of data at a click, something not offered by any to the best of my knowledge.
D) our search is out of world. we can search text inside image, multiple key words inside multiple documents and Audio/Video too. Just not comparable.
E) The most powerful feature of Needl is knowledge sharing feeds and team functionalities which will allow rule based automatic sharing of data and co creation of group projects, team work and community building. Watch out for that key value added feature which makes you more productive.
I could go on and on of why cloud based solution are better but I guess above is enough to differentiate superior value proposition of Needl to knowledge professionals.
Please find some tweets with example of powerful deep search and extraction across multiple documents. The desktop and browsers don’t have that kind of powerful indexing and processing capabilities and do shallow meta search is my understanding.