What is currently best blockchain analytics tool?

[szuetam]

What is currently best block-chain analytics tool?
It could be library for python (or any other language including matlab etc.).
It could be on-line free service.

What I want to find - addresses connected by transactions with given address (separately in and out transactions), on some levels like direct transaction or two levels of transaction (A->B->C for example).

Then filter results by time of last use of that address.

Then filter them by time of those transactions (transactions excluding 4pm to 8pm for example).

Is there sth which I can use instead of starting from scratch?

[nextblast]

You can check Bitpay's Insight

https://github.com/bitpay/insight

[btcbb]

Then filter them by time of those transactions (transactions excluding 4pm to 8pm for example).

As far as I've seen, BlockTrail (https://www.blocktrail.com) is the only online explorer that has date/time filters.