Dune Analytics vs Nansen vs Arkham: Which On-Chain Tool Do You Need?

All three read the same public blockchain data and answer completely different questions. Dune turns raw blockchain records into charts that anyone can build and share. Nansen puts behaviour labels on wallets, so you can follow the ones it rates as skilled. Arkham tries to work out which real company or fund sits behind an address. Picture one busy street: Dune counts the traffic, Nansen tells you which drivers are any good, Arkham tells you who owns the cars.

What is each one actually for?

• Dune - a spreadsheet laid over the blockchain. Thousands of community dashboards already cover protocols like Uniswap and Aave. Reading them is free; building your own means learning some SQL, the question-asking language databases use.
• Nansen - wallet labels. It tags addresses by what they have done before, groups the successful ones, and shows you what those wallets are buying now.
• Arkham - identity. It attaches names to addresses, so you can see at a glance whether a large Bitcoin transfer went to an exchange, a fund, or somebody's cold storage.

Which one should a beginner open first?

Dune. Browsing costs nothing, and half the skill in on-chain research is learning which questions can even be asked. Type a protocol name into its search, read a dashboard somebody already built, and you will have seen more real data in ten minutes than most people see in a month. Arkham is also largely free to poke around in and is the faster answer when your question is simply "who is this address". Nansen is the one you pay real money for, and it earns that only once you have a question its labels answer.

Where all three are weak

None of them can tell you why. A wallet that Nansen rates highly moving ETH to an exchange might be selling, posting collateral, or shuffling funds between its own accounts - the chain records the move, not the motive. Labels are guesses made by humans and they go stale. And a Dune dashboard is only as good as the person who wrote the query behind it, which is why the good ones show their work.

Pick one token you already hold, look it up on a Dune dashboard, then find its biggest holder on Arkham and see whether the name surprises you. That single exercise teaches more than any comparison table. Next, what Nansen actually does, and for the wider field, the best on-chain analytics tools for research.