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Arbitrum ecosystem projects: 390 on NAUT, 164 in DeFi

By NAUT Research · · 6 min read

390 Arbitrum ecosystem live company rows carrying the Arbitrum chain tag on NAUT, read 4 November 2026. Logos: Arbitrum, Uniswap, Pendle, GMX, Chainflip, CoW Protocol, ChainGPT, ApeCoin, Livepeer, Lit Protocol, Hyperlane.

NAUT tracks 390 live company rows as Arbitrum ecosystem projects, every one of them carrying the Arbitrum chain tag in NAUT's own database as read on 4 November 2026, across 33 sector tags. DeFi is the largest group with 164 rows, ahead of Infrastructure with 70, DEX with 58 and AI with 48, and every row below links to its own NAUT page with the team behind it.

How this list was built: on 4 November 2026 NAUT read every company row in its database holding Arbitrum in its chain field, 398 rows in total. 390 of them are live and have a page, 7 are archived or merged into another row, and 1, Estate Protocol, carries the tag with no slug, so it has no page to link and sits outside every count here (398 = 390 + 7 + 1). A row can carry several sector tags, so the category counts add to more than 390 and the shares add to more than 100%. 34 of the 390 carry no sector tag at all, so they sit in no category below. 15 of the 390 name Arbitrum in their own NAUT summary, and the other 375 carry the chain tag without naming it. The tag is a lead rather than proof of a deployment: 10 of the 390 rows went out to public sources for this article, and 1 of the 10 came back contradicted.

Which Arbitrum ecosystem projects does NAUT track, and in what categories?

These are the 15 sector tags that hold 10 or more of the 390 rows, ranked by how many rows carry the tag. The examples are 2 of the 5 highest rows in each category by NAUT's own trust score, which is how NAUT ordered them. NAUT's own tag names read "DEX (Decentralized Exchange)" and "CEX (Centralized Exchange)"; the table shortens both.

Sector tag Rows of 390 Examples
DeFi 164 (42%) ,
Infrastructure 70 (18%) ,
DEX 58 (15%) ,
AI 48 (12%) ,
L1/2/3 35 (9%) ,
Gaming 34 (9%) ,
RWA 28 (7%) ,
CEX 26 (7%) ,
Stablecoins 26 (7%) ,
DePIN 18 (5%) ,
Privacy 14 (4%) ,
Meme 11 (3%) ,
Launchpad 11 (3%) ,
Wallet 10 (3%) ,
Money Market 10 (3%) ,

22 of the 34 buckets hold 5 or more rows and 16 hold 10 or more. 1 of those 16 is the 34 rows with no sector tag, which is a gap in NAUT's data rather than a category, so it has no line in the table above. The 18 smaller tags run from SocialFi with 9 rows and Tools with 8 down to 7 tags holding 1 row each.

Which Arbitrum ecosystem projects hold the most value on NAUT?

170 of the 390 rows carry a stored total value locked figure. The chart ranks the 7 largest project rows among the 103 category examples by that figure, once 2 rows are set aside: Arbitrum's own row, the chain itself, and Hyperliquid, whose Arbitrum deployment came back contradicted in the next section. Both carry more than any row in the chart.

Stored total TVL on NAUT, $M, largest 7 examples outside Arbitrum and Hyperliquid
  1. Uniswap$1537.5M
  2. Compound$1278.5M
  3. Venus$1135.0M
  4. Pendle$1013.1M
  5. Re$479.6M
  6. GMX$202.4M
  7. River$76.6M

NAUT's data shows $1,537,517,383 stored against Uniswap, $1,278,495,280 against Compound, $1,134,999,376 against Venus and $1,013,141,358 against Pendle on 4 November 2026, with $479,611,026 against Re, the insurance row in the chart. Arbitrum's own row, the chain itself, carries $3,315,573,929 and sits outside the chart for that reason, and Hyperliquid carries more again, $6,330,979,186, and sits outside it because the outside check contradicted its Arbitrum deployment. Each figure is the total NAUT holds for that company across every chain it runs on, so it is not an Arbitrum-only number, and 368 of the 390 rows carry a follower count while 232 carry a trust score.

Which rows did NAUT check against public sources?

10 of the 390 rows went out to public sources for this article, taken as the highest-scoring row in each of the 12 largest categories, with 2 of those 12 dropping out because their top-scoring row was already covered under another category: Chainflip tops Infrastructure as well as DeFi, and ApeCoin tops Meme as well as Gaming. 8 came back confirmed, 1 came back contradicted, and 1 is left out because the runner could not find the quoted wording on the page it read. The other 380 rows carry the chain tag with no outside check here, so read each row's own page before you act on it.

Project (category) Check What it shows
, DeFi Confirmed Its own docs list among its supported chains
, DEX Confirmed Its deployment page lists " One 42161 Layer 2"
, AI Confirmed Its dev docs name " One and other Layer 2 solutions"
, Gaming Confirmed ApeChain, its own chain, runs on Orbit technology
, RWA Confirmed Its beta launched on the mainnet on 28 February 2022
, CEX Confirmed Its deployments page lists " 42161"
, Stablecoins Confirmed A report says it is "deployed on BNB Chain, , Base, and other chains"
, DePIN Confirmed Its contract reference says contracts are "deployed on One (active)"
, L1/2/3 Contradicted The pages read put its venue on its own layer 1, with a bridge on
, Privacy Not used The page the runner read did not yield the quoted wording

Hyperliquid is the reason to treat a chain tag as a starting point. It carries the Arbitrum tag on NAUT and 4 sector tags with it, and the public pages read on 4 November 2026 put its trading venue on its own chain.

What this tells a BD team working the Arbitrum ecosystem

  • The buyer you want sits in a category, not in the whole 390. DeFi at 164 rows, Infrastructure at 70 and DEX at 58 cover 3 different sales motions.
  • 15 rows name Arbitrum in their own NAUT summary. Those are the teams for whom the chain is part of the pitch, and the shortest path to a chain-specific conversation.
  • 34 rows carry no sector tag, so a category-only search misses them. Search NAUT by name or by query instead of by sector when you want the full set.
  • Arbitrum DeFi projects with a stored TVL figure give you a size filter before the first message, and 170 of the 390 rows have one.
How a BD team can work the 390 rows
  1. Pick the categoryDeFi holds 164 of the 390 rows, Infrastructure 70 and DEX 58, so pick the motion first.
  2. Open the top rowsEach category line names 2 of its 5 highest rows by NAUT trust score, from Chainflip to Gearbox.
  3. Read the row before you write15 of the 390 name Arbitrum themselves, and 1 of the 10 rows checked outside came back contradicted.
  4. Pull the teamEach company's NAUT page lists its people, and a paid plan reveals their verified channels.

What this tells an investor sourcing on Arbitrum

  • The spread is the signal: 33 sector tags over 390 rows, with 22 tags holding 5 or more rows, so the chain's rows are not a single-sector story.
  • 232 of the 390 rows carry a NAUT trust score, which is what put Chainflip, CoW Protocol and Pendle at the top of their categories here.
  • Small tags are where a new position hides: Launchpad and Meme hold 11 rows each, Wallet and Money Market 10 each, and 7 tags hold 1 row.
  • Every row in this article links to a NAUT page with the company's team, sectors and chains, which is where a sourcing call starts.

Related reading on NAUT: Decentralized exchanges list: 196 DEXs on NAUT, 37 run perps and Layer 1 blockchains list: 127 chains, 120 with a token.

Can you pull this data through the NAUT API?

Yes, through project search: GET https://api.naut.so/v1/projects?q=Arbitrum&limit=100 returns the matching project rows with their sectors and team, and GET https://api.naut.so/v1/projects?sector=DeFi&limit=100 walks the sector that holds 164 of these 390 rows. Each data call costs 5 credits, lists come back paged with page and limit (100 is the maximum), and the parameters are documented at naut.so/docs/api with plans from $49 a month at naut.so/pricing. Verified Telegram, email and LinkedIn for the people at these companies unlock on any paid NAUT plan, so start a 7-day trial if you need the channels.

Arbitrum ecosystem projects FAQ

Which projects are built on Arbitrum?

NAUT holds 390 live company rows carrying the Arbitrum chain tag as of 4 November 2026, among them Chainflip, Pendle, CoW Protocol, ChainGPT, ApeX, Livepeer and GMX. 8 of the 10 rows put to public sources for this article were confirmed as deployed on Arbitrum, and 15 of the 390 name the chain in their own NAUT summary.

How many Arbitrum projects are in each category?

Of the 390 rows read on 4 November 2026, DeFi holds 164, Infrastructure 70, DEX 58, AI 48, L1/2/3 35, Gaming 34, RWA 28, and CEX and Stablecoins 26 each. A row can carry several sector tags, so those counts overlap, and 34 rows carry no sector tag.

Did NAUT verify that all 390 rows run on Arbitrum?

No. 10 of the 390 rows went to public sources for this article, taken as the top-scoring row in each of the 12 largest categories with 2 of those 12 dropping out because their top row was already covered under another category, and 8 were confirmed, 1 (Hyperliquid) was contradicted and 1 (Lit Protocol) is left out for a quote the runner could not locate. The remaining 380 rows carry NAUT's chain tag with no outside check in this article.

Where can I find the teams behind these Arbitrum ecosystem projects and their contact channels?

Each of the 390 rows has a NAUT page that lists the company's people, sectors and chains, and GET https://api.naut.so/v1/projects/<slug> returns 1 company with its team. Verified Telegram, email and LinkedIn for those people unlock on any paid NAUT plan, so start a 7-day trial to open them.

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